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Multiple Input Multiple Output patents



      
           
This page is updated frequently with new Multiple Input Multiple Output-related patent applications. Subscribe to the Multiple Input Multiple Output RSS feed to automatically get the update: related Multiple RSS feeds. RSS updates for this page: Multiple Input Multiple Output RSS RSS


Lg Electronics

Method and apparatus for transmitting management information in wireless local area network system

Date/App# patent app List of recent Multiple Input Multiple Output-related patents
04/16/15
20150103934
 Method and  communication in millimeter wave mimo communication environment patent thumbnailnew patent Method and communication in millimeter wave mimo communication environment
A method and apparatus for communication in millimeter wave multiple input multiple output (mimo) communication are provided. A beamforming matrix by groups for terminals that are classified into a group is generated, and a pilot signal that is beam-formed based on the generated beamforming matrix by groups is transmitted to the terminals.
Electronics And Telecommunications Research Institute
04/16/15
20150103654
 Method and  transmitting management information in wireless local area network system patent thumbnailnew patent Method and transmitting management information in wireless local area network system
A method for transmitting load information in a wireless local area network. The method according to one embodiment includes generating, by an access point (ap), basic service set (bss) load information, the bss load information including a multiple input multiple output (mimo) channel underutilization field; and transmitting, by the ap, the bss load information.
Lg Electronics Inc.
04/02/15
20150092895
 Adaptation techniques in mimo patent thumbnailAdaptation techniques in mimo
A method of the multiple input multiple output feedback is disclosed. In accordance with an embodiment of the invention, the multiple input multiple output feedback method includes a receiver receiving a reference signal from a base station and calculating a signal to interference and noise ratio from the received reference signal.
Intel Mobile Communications Gmbh
04/02/15
20150092876
 Method and  amplifying multiple input multiple output (mimo) in wireless communication system patent thumbnailMethod and amplifying multiple input multiple output (mimo) in wireless communication system
A method and apparatus for amplifying a mimo signal in a wireless communication system are disclosed. A signal amplifier for amplifying a mimo signal in a wireless communication system includes: a recognition module for recognizing network information and antenna information of a source device; and an adaptive link construction module for forming a link between a plurality of antenna with respect to the source device and a plurality of antenna with respect to the destination device on the basis of the recognized information..
Lg Electronics Inc.
04/02/15
20150092621
 Full duplex system in massive mimo patent thumbnailFull duplex system in massive mimo
A multiple input multiple output (mimo) antenna system is implemented for communications in a wireless device. Mimo beamforming techniques are utilized to improve communications, and may be utilized in full-duplex mode.
Broadcom Corporation
03/26/15
20150085947
 Communication system and method using space division multi-user multiple input multiple output (sd-mimo) communication method patent thumbnailCommunication system and method using space division multi-user multiple input multiple output (sd-mimo) communication method
Provided is a communication system using a space division multi-user multiple input multiple output (sd-mimo) communication method. A transmission apparatus may transmit, to each of terminals included within a coverage, common control information commonly transmitted to the terminals and individual control information individually transmitted to each of the terminals.
Samsung Electronics Co., Ltd.
03/26/15
20150085944
 Methods of antenna system control in massive mimo systems patent thumbnailMethods of antenna system control in massive mimo systems
A multiple input multiple output (mimo) antenna system is implemented for communications in a wireless device. Information regarding the environment surrounding the wireless device may be used to determine which of the mimo antennas are selected such that communications performance is improved.
Broadcom Corporation
03/26/15
20150085820
 Scattered pilot pattern and channel estimation  mimo-ofdm systems patent thumbnailScattered pilot pattern and channel estimation mimo-ofdm systems
Methods and apparatus are provided for inserting data symbols and pilot symbols in an ofdm (orthogonal frequency division multiplexing) transmission resource utilizing frequency hopping patterns for the data symbols and/or the pilot symbols. Data symbols and pilot symbols are allocated for down link (base station to mobile station) and up link (mobile station to bases station) transmission resources in a two-dimensional time-frequency pattern.
Blackberry Limited
03/26/15
20150085807
 Communication method and system using uplink multiple input multiple output technology patent thumbnailCommunication method and system using uplink multiple input multiple output technology
The present invention discloses a communication method and system using mimo technology. The communication method includes: a network side device determines whether a ue uses a single-stream mode or a multi-stream mode as an uplink data transmission mode; and the network side device notifies the ue of indication information indicating the determined uplink data transmission mode.
Huawei Technologies Co., Ltd.
03/12/15
20150071366
 Uplink training for mimo implicit beamforming patent thumbnailUplink training for mimo implicit beamforming
In a method for beamforming in a multiple input multiple output (mimo) communication system, a data unit is received from a communication device via a mimo communication channel, and it is determined whether the data unit satisfies one or more selection criteria. Further, when it is determined that the data unit satisfies the one or more selection criteria, the data unit is selected to be used in developing a steering matrix for transmitting data units to the communication device..
Marvell World Trade Ltd.
03/12/15
20150071137

Multiband mimo vehicular antenna assemblies with dsrc capabilities


Disclosed are exemplary embodiments of multiband multiple input multiple output (mimo) vehicular antenna assemblies for installation to a vehicle body wall. In exemplary embodiments, a multiband mimo vehicular antenna assembly generally includes at least one cellular antenna configured to be operable over one or more cellular frequencies (e.g., long term evolution (lte), etc.), at least one satellite antenna configured to be operable over one or more satellite frequencies (e.g., global navigation satellite system (gnss), satellite digital audio radio services (sdars), etc.) and at least one dedicated short range communication (dsrc) antenna configured to be operable over dsrc frequencies..
Laird Technologies, Inc.
03/05/15
20150063503

Maximum likelihood detection


A method of symbol detection in an electronic device employing multi-user multiple input multiple output (mu-mimo) communication over a first transmission layer of first and second transmission layers comprises various steps. A receiver comprises processing circuitry for performing these steps.
Blackberry Limited
03/05/15
20150063480

Usage of multiflow and multiple input multiple output in cellular communication systems


For each base station of k base stations of a cellular communications network a maximum number of wanted data streams per carrier is decided that is to be scheduled to a terminal accessing the cellular communications network. The terminal has nr receive antennas and k is an integer equal to or greater than two.
03/05/15
20150063478

Reference signal transmission downlink multiple input multiple output system


A reference signal transmission method in a downlink mimo system is disclosed. The downlink mimo system supports a first ue supporting n transmission antennas among a total of m transmission antennas (where m>n) and a second ue supporting the m transmission antennas.
Lg Electronics Inc.
03/05/15
20150063294

Method for transmitting reference signals in a downlink multiple input multiple output system


A method for transmitting, by a base station, configuration information for a reference signal for channel measurement. The method according to one embodiment includes transmitting, to a user equipment, first resource information for indicating a first pattern, first subframe information for indicating a first subframe, second resource information for indicating a second pattern, and second subframe information for indicating a second subframe.
Lg Electronics Inc.
03/05/15
20150063293

Reference signal transmission downlink multiple input multiple output system


A reference signal transmission method in a downlink mimo system is disclosed. The downlink mimo system supports a first ue supporting n transmission antennas among a total of m transmission antennas (where m>n) and a second ue supporting the m transmission antennas.
Lg Electronics Inc.
02/19/15
20150049698

Method for transmitting uplink control information


A method for transmitting uplink channel state information (csi) in a coordinated multi-point (comp) system is provided, which includes coding and multiplexing operations. In a multiple input multiple output (mimo) system, a method for transmitting csi of multiple coordinated points according to an embodiment of the present invention includes coding the csi of the multiple coordinated points, modulating the coded csi of the multiple coordinated points, and multiplexing the modulated csi on a physical uplink shared channel (pusch).
Alcatel Lucent
02/12/15
20150043450

Receiver-aided multi-user mimo and coordinated beamforming


Embodiments include systems and methods for improving the beamforming efficiency of multi-user multiple input multiple output (mu-mimo) and/or coordinate beamforming (cb) in wireless multi-access networks. In one aspect, a receiver-aided approach for mu-mimo and/or cb is provided.
Broadcom Corporation
02/12/15
20150043341

Method and resource allocation in a mimo communication system


A method of controlling uplink multiple input multiple output transmission between user equipment and a base station of a wireless communications network, user equipment and a computer program product are disclosed. The method comprises the steps of: identifying whether insufficient capacity exists on a primary uplink stream to carry pending uplink data packets; and if insufficient capacity exists, preventing establishment of a secondary uplink stream when it is determined that pending uplink data packets which would not be carried by the primary uplink stream would under-utilise the secondary uplink stream.
Alcatel Lucent
02/05/15
20150036674

Method and apparatus of transmitting a spatial stream for mu - mimo in a wireless local area network system


A method of transmitting a spatial stream for multi user (mu)-multiple input multiple output (mimo) in a wireless local area network system and a transmitter for performing the method are provided. The method includes transmitting, to a receiver, a management frame including group information to assign or change a position of a plurality of spatial streams corresponding to each of a plurality of groups, and transmitting, to the receiver, a frame including at least one spatial stream, wherein the group information includes a plurality of group indicators and a plurality of spatial stream (ss) indicators, each of the plurality of group indicators indicating whether the receiver is a member of each of the plurality of groups, each of the plurality of ss indicators indicating a position of the plurality of spatial streams corresponding to each of the plurality of groups..
Lg Electronics Inc.
01/29/15
20150030097

Method and subcarrier and antenna selection in mimo-ofdm system


A method and apparatus for radio resources control in a multiple input multiple output (mimo) orthogonal frequency division multiplexing (ofdm) communication system are disclosed. Radio resources are controlled by producing and applying a respective adaptive modulation and coding to each data stream.
Interdigital Technology Corporation
01/29/15
20150030093

Encoding apparatus and encoding multiple input multiple output communication system


When precoding information corresponding to data items of respective layers to be transmitted is received from an upper layer, an encoding apparatus of a multiple input multiple output (mimo) communication system selects a precoding matrix among a plurality of precoding matrices stored in a storage using the precoding information and precodes the data items of the respective layers by simple operations consisting of at least one operation combination of addition, subtraction, selection, and inversion operations in accordance with a kind of the selected precoding matrix and a precoding operation pattern.. .
Electronics And Telecommunications Research Institute
01/29/15
20150029986

Mu-mimo transmission method in wireless lan system


A multi-user-multiple input multiple output (mu-mimo) transmission method performed by an access point (ap) in a wireless local area network (wlan) system is provided. The method includes transmitting an mu-mimo initiation message to a destination station (sta) which is a target of a mu-mimo transmission, the mu-mimo initiation message informing that mu-mimo transmission will be initiated, receiving a sounding frame transmitted by the destination sta as a response to the mu-mimo initiation message and performing mu-mimo transmission on data by beamforming based on channel information obtained from the sounding frame.
Lg Electronics Inc.
01/22/15
20150023248

Multi-user multiple input multiple output (mimo) communication with distributed antenna systems in wireless networks


A system and a method are provided. The method includes deploying a plurality of antennas of an access point or a base station as a distributed antenna system.
Nec Laboratories America, Inc.
01/22/15
20150023187

Wireless local area network system and operating the same


A method of operating a wireless local area network (wlan) system is provided. The wlan includes an access point supporting uplink multiple user multiple input multiple output mode.
Samsung Electronics Co., Ltd.
01/08/15
20150010104

Transmitter and signal transmitting method thereof


A signal transmitter and receiver are provided. The transmitter includes: a multiple input multiple output (mimo) precoder configured to, in response to a first input signal and a second input signal, generate a first transmission signal and a second transmission signal by performing mimo precoding by pre-phase shifting or pre-phase shifting/hopping the second input signal, and superposition encoding the first input signal and the pre-phase shifted or pre-phase shifted/hopped second input signal; and an orthogonal frequency division multiplexing (ofdm) modulator configured to ofdm modulate the first transmission signal and the second transmission signal..
Samsung Electronics Co., Ltd.
01/01/15
20150003374

Coexistent channel access method


A method for transmitting a multiple input multiple output (mimo) packet in a wireless local area network is described. The method includes generating a physical layer protocol data unit (ppdu) including a short training field (stf), a long training field (ltf), a very high throughput (vht)-signal field, a vht-stf, a vht-ltf and a plurality of data streams.
Lg Electronics Inc.
01/01/15
20150003350

Downlink transmission in a mu-mimo system


A method is provided for managing a downlink transmission in a multi user-multiple input multiple output (mu-mimo) system. The mu-mimo system includes a base station and a set of remote radio units connected to the base station.
Orange
01/01/15
20150003325

Progressive channel state information


Embodiments of system, device, and method configurations for implementing a progressive channel state indicator (csi) evaluation are disclosed herein. In one example, techniques for increasing the precision of channel feedback information by detecting a best beam index in a progressively scanning grid of beams is deployed in a long term evolution (lte) network.
01/01/15
20150003239

Method and response scheduling in a downlink multiple-user multiple input multiple output network


Embodiment and methods and apparatus for scheduling one or more responses for multiple stations (stas) in a downlink multiple-user multiple-input-multiple-output (mimo) network transmission are provided.. .
12/25/14
20140376601

Adaptive time diversity and spatial diversity for ofdm


An adaptable orthogonal frequency-division multiplexing system (ofdm) that uses a multiple input multiple output (mimo) to having ofdm signals transmitted either in accordance with time diversity to reducing signal fading or in accordance with spatial diversity to increase the data rate. Sub-carriers are classified for spatial diversity transmission or for time diversity transmission based on the result of a comparison between threshold values and at least one of three criteria.
Apple Inc.
12/25/14
20140376503

Control channel transmitting method, base station and terminal


A method used in a communication system including a base station and a terminal, the method includes: transmitting from the base station to the terminal a control channel with use of a control channel format selected from among a plurality of control channel formats, each including modulation scheme information, according to whether multiple input multiple output (mimo) transmission is applied or not, and receiving the control channel by the terminal, wherein a number of bits indicating a modulation scheme included in a control channel format to be selected when the mimo transmission is applied is greater than that included in a control channel format to be selected when the mimo transmission is not applied.. .
Fujitsu Limited
12/18/14
20140370905

Ue capability report method and apparatus in mobile communication system


A method and an apparatus for reporting a capability of a user equipment (ue) supporting advanced functions such as carrier aggregation (ca) are provided. The method includes checking, when a control message requesting a capability report is received, a radio access technology (rat) type and transmitting, when the rat type is set to evolved universal terrestrial radio access (eutra), at least one band combination information on at least one band combination supported by the terminal.
Samsung Electronics Co., Ltd.
12/11/14
20140362834

Scheduling information transmission method, device, and communications system


A scheduling information transmission method, device, and communications system are provided. The method includes: generating a channel attribute parameter and a serving grant (sg), where the channel attribute parameter and the sg are used for data scheduling of uplink multiple input multiple output (mimo); and delivering the channel attribute parameter and the sg to a user equipment (ue) through a target channel, where the channel attribute parameter is used by the ue to determine a primary-stream enhanced dedicated channel transport format combination indicator (e-tfci) and a secondary-stream e-tfci.
11/27/14
20140348260

Method to implement a multiple input multiple output transmission mode


A method to implement a multiple input multiple output transmission mode in the method of the invention, said mimo transmission mode comprises using a certain number of antennas in a user equipment and a given number of antennas in a radio access node for the communication between said user equipment and said radio access node, said communication carried out by means of a communication channel, said communication channel represented by a channel matrix. The method of the invention is characterised in that it comprises uncorrelating at least part of the coefficients of said channel matrix when said communication channel is degenerate by making use of at least one additional antenna in each of said radio access node and said user equipment in order to change the radiation pattern associated to transmission layers of said communication enabling the use of an enhanced mimo transmission mode..
11/27/14
20140348097

Method for performing channel sounding in wireless lan system and supporting same


The present invention relates to a method of performing channel sounding in a wireless lan system. The method includes transmitting a null data packet announcement (ndpa) frame for providing notice of an ndp to be transmitted, and transmitting the ndp and receiving a feedback frame from a station (sta).
11/27/14
20140347240

Mimo antenna arrays built on metamaterial substrates


A magnetic permeability enhanced metamaterial is used to enhance the antenna array of a multiple input multiple output (mimo) communication system. A rectangular patch antenna array is formed including a stack of a plurality of unit cells, where each unit cell includes an inductive loop of magnetic permeability enhanced metamaterials embedded in a host dielectric substrate.
11/20/14
20140341320

Method and transmitting data streams in mimo system


A method for transmitting data streams in a multiple input multiple output (mimo) system is provided, where each data stream is mapped to multiple layers in an mimo channel space for transmission, and the method includes: performing inter-layer interleaving for n data streams to obtain n interleaved data streams; mapping the n interleaved data streams respectively to n layers in the mimo channel space, and transmitting the n interleaved data streams that are mapped to the n layers. By using the method of the present invention, a combined cqi can be used in a better way to improve mimo transmission performance.
11/20/14
20140341314

Implementing multi user multiple input multiple output (mu mimo) base station using single-user (su) mimo co-located base stations


A system that implements multi user multiple inputs multiple outputs (mu mimo) base station using a plurality of co-located single-user (su) mimo base stations is provided herein. The system may include a number n co-located single-user multiple input multiple output (su-mimo) bases stations each having a number k mimo rank, wherein said n co-located su-mimo base stations are configured to share a common antennas array, operating over a common frequency band; a front-end mimo processor connected to said n co-located su-mimo base stations and further coupleable to said common antennas array; and a back-end coordinator configured to collaboratively assist in optimizing operation of said n co-located su-mimo base stations, such that said n co-located su-mimo base stations and said front-end mimo processor collaboratively implement a multi-user multiple input multiple output (mu-mimo) base station capable of dynamically separating a coverage area into n*k spatial channels..
11/13/14
20140334565

Method and miniaturization of mimo systems via tightly coupled antenna array


In a multiple input multiple output (mimo) system, an apparatus and method includes a tightly coupled array antennas (tca) or current sheet antennas (csa). Far-field radiation patterns from any current sheet antenna are formed from the combination of the fields generated by a set of currents on the csa of array port orthogonal modes, such as the characteristic modes (cm).
11/13/14
20140334460

Method and transmitting reference signals in uplink multiple input multiple output (mimo) transmission


The present invention relates to a wireless communication system, and more particularly, to a method and an apparatus for transmitting reference signals in uplink mimo transmission. According to one embodiment of the present invention, the method for transmitting uplink signals through a terminal in the wireless communication system comprises the steps of: receiving control information including the information on a cyclic shift and/or an orthogonal cover code; allocating the multiplexed reference signals onto an uplink subframe; and transmitting the subframe through a multi-antenna.
11/13/14
20140334413

Method for setting modulation and coding scheme in wireless ran system and apparatus supporting the same


A method of transmitting data by a multi-user multiple input multiple output (mu-mimo) transmitter in a wireless local area network system. The method includes transmitting by the mu-mimo transmitter, a physical layer convergence procedure (plcp) protocol data unit (ppdu), the ppdu including a bundled interface field, a modulation and coding scheme (mcs) index field and a data field; and transmitting, by the mu-mimo transmitter, the ppdu to a receiving station.
10/30/14
20140321568

Method and managing control channel in a mobile communication system using multiple antennas


Methods and apparatuses are provided for transmitting control information to a terminal, by a base station, in a multiple input multiple output (mimo) mobile communication system. The control information is generated including a field indicating either a precoding scheme or a pilot format according to a type of pilot used for data demodulation in the terminal.
10/23/14
20140317241

Utility-maximization framework for dynamic adaptive video streaming over hypertext transfer protocol in multiuser-multiple input multiple output long-term evolution networks


A method for scheduling user equipment (ue) devices comprising sorting the plurality of ue devices based on a weight of priority associated with each of the ue devices with respect to a plurality of subbands, and assigning one or more of the ue devices to each of the subbands using the weight of priority associated with the ue devices, wherein the weight of priority is based on one or more network utility functions associated with the ue devices. A computer program product comprising computer executable instructions to receive a media content segment using a dynamic adaptive video streaming over hypertext transfer protocol (http) (dash) protocol, monitor a playback buffer size of a ue device, monitor a battery energy level of the ue device, and adjust a representation quality level in a segment request based on the target requested video rate, the playback buffer size and the battery energy level..
10/23/14
20140314166

Adaptive signaling and feedback for multi-user multiple input multiple output (mu-mimo)


Embodiments recognize that multi-user multiple input multiple output (mu-mimo) performance can be greatly enhanced if additional parameters are provided to the user equipment (ue) during link adaptation and/or data demodulation. Recognizing the overhead that such signaling entails, embodiments provide mu-mimo enhancement solutions that identify and signal only those parameters that can result in a large gain improvement when known at the ue.
10/16/14
20140307819

Adaptive cross-radio access technology (rat) channel assignment


Systems and methods for channel assignment configuration in a multiple access point (ap) environment are provided. The multiple aps can be homogeneous or heterogeneous and can implement one or more radio access technologies (rats), including massive multiple input multiple output (m-mimo) rats.
10/16/14
20140307818

Base station configuration using massive multiple input multiple output (m-mimo)


Systems and methods for configuring base stations in a geographic region to handle specific respective types of data traffics are provided. The configuration of the base stations can be static, semi-static, or dynamic.
10/16/14
20140307702

Massive mimo (m-mimo) support for heterogeneous networks (hetnets)


Systems and methods for enabling a wireless backhaul network between access points (aps) in a wireless network are provided. In an embodiment, the wireless backhaul network is enabled using a massive multiple input multiple output (mimo) radio access technology (rat).
10/09/14
20140301383

Method and apapratus for transmitting a frame in a wireless lan system


The present invention relates to a method and apparatus for transmitting a frame in a wireless lan system. An access point (ap) receives a single orthogonal frequency division multiplexing (ofdm) symbol from each of a plurality of stations (sta) and a single-tone request to send (srts) frame through a single subcarrier, selects stas for performing uplink (ul) multiuser (mu)-multiple input multiple output (mimo) transmission, and transmits to the plurality of stas a single-tone clear to send (scts) frame allocated to the same subcarrier as a subcarrier to which the srts frames received from the selected stas are allocated..
10/02/14
20140292593

Multiband mimo antenna assemblies operable with lte frequencies


According to various aspects, exemplary embodiments are disclosed herein of multiple input multiple output (mimo) antenna assemblies operable over multiple frequency bands, including lte (long term evolution) frequencies (e.g., 4g, 3g, other lte generation, b17 (lte), lte (700 mhz), etc.). In various embodiments, an antenna assembly generally includes a first or primary cellular antenna and a second or secondary cellular antenna.
09/25/14
20140286648

Optical mimo processing


A technique is provided for an optical multiple input multiple output (mimo) processing system. The optical (mimo) processing system includes an interface to a multi-mode fiber at a first end of the optical processing system; m first single-mode waveguides coupled to the interface; wherein the first waveguides are arranged to carry m first optical signals, respectively; n second single-mode waveguides at a second end of the optical processing system, wherein the second waveguides are arranged to carry n second optical signals, respectively, wherein the n second optical signals are associated with n modes carried by the multi-mode fiber; and an optical processing core arranged to transform the first optical signals into the second optical signals such that a correlation between the second optical signals is decreased compared to a correlation between the first optical signals using a plurality of optical couplers for coupling each of the m first optical signals with one another, such that each of the n second optical signals is a linear combination of all of the m first optical signals..
09/25/14
20140286327

Method for transmitting control information and the same


Methods and devices for transmitting or receiving data in a wireless local area network are provided. The method in one embodiment includes transmitting, by a transmitter, a first long training field (ltf) to a receiver; transmitting, by the transmitter, a very high throughput (vht)-sig-a field to the receiver; transmitting, by a transmitter, a second ltf for multiple input multiple output (mimo) channel estimation to the receiver; transmitting, by the transmitter, a vht-sig-b field to the receiver; and transmitting, by the transmitter, a data field to the receiver, wherein the first ltf, the vht-sig-a field, the second ltf, the vht-sig-b field and the data field are sequentially transmitted, and wherein the second ltf and the data field are mapped to at least one spatial stream based on a mapping matrix but the first ltf and the vht sig-a field are not mapped to the at least one spatial stream..
09/25/14
20140286184

Method and transmitting reference signal for reducing intercell interference in multiple input multiple output communication system


According to one embodiment, a method for receiving a channel state information-reference signal (csi-rs) for measuring a channel includes: receiving csi-rss on resource elements (res) in a subframe configured for the csi-rss from a base station, wherein if each csi-rs of the received csi-rss is transmitted from each of four or more transmit antenna ports of the base station, at least two res on which each csi-rs is received are associated with each of the four or more transmit antenna ports; and transmitting channel state information based on the received csi-rss.. .
09/18/14
20140269617

Method for modifying multiple input multiple output mode across radio network controllers


A method for modifying multiple input multiple output (mimo) mode across radio network controllers (rncs) is provided by the present disclosure. In the method of the present disclosure, a serving rnc (srnc) transmits a request message to a drift rnc (drnc), wherein the request message requests the drnc to set a radio link for a mobile equipment in a cell controlled by the drnc, and the drnc feeds back a response message to the srnc based on the capability of the drnc and the cell controlled by the drnc, wherein the response message contains the element used for configuring the radio link in the non-mimo mode.
09/18/14
20140266868

Methods and systems for multiple input multiple output synthetic aperture radar ground moving target indicator


A multiple-input multiple-output (mimo) synthetic aperture radar (sar) system. The radar system includes spatially offset transmitting antennas simultaneously transmitting at least two distinguishable waveform signals and receiving antennas receiving incoming waveform returns for each of the distinguishable waveform signals.
09/11/14
20140254713

Communication system and method using space division multi-user multiple input multiple output (sd-mimo) communication method


Provided is a communication system using a space division multi-user multiple input multiple output (sd-mimo) communication method. A transmission apparatus may transmit, to each of terminals included within a coverage, common control information commonly transmitted to the terminals and individual control information individually transmitted to each of the terminals.
09/11/14
20140254514

Codebook enchancement for long term evolution (lte)


multiple input multiple output systems using a transmit precoder codebook designed for a four-transmitter (4tx) antenna configuration are described. The 4tx antenna configuration is an attractive option for base stations in cellular network environments and it is desirable to use a transmitter precoder codebook that provides sufficient granularity in typical operating scenarios, and to address various antenna configurations.
09/04/14
20140247812

Mimo communication method, transmitting device, and receiving device


A multiple input multiple output (mimo) communication method and system for performing communication between n (n is an integer greater than or equal to 2) transmitting devices each having a transmit antenna and at least one receiving device having n receive antennas by using a multi-user mimo scheme. The method includes dividing the n transmitting devices into a plurality of sets, and assigning an orthogonal code to each set of transmitting devices as a digital signal sequence to be transmitted by each of the transmitting devices, and arranging the digital signal sequences to be transmitted by the transmitting devices in a frequency axis direction in which an inverse fast fourier transform is performed, and performing coding..
08/28/14
20140241451

Method for transmitting control information and the same


Methods and devices for transmitting or receiving data in a wireless local area network are provided. The method in one embodiment includes transmitting, by a transmitter, a first long training field (ltf) to a receiver; transmitting, by the transmitter, a very high throughput (vht)-sig-a field to the receiver; transmitting, by the transmitter, a second ltf for multiple input multiple output (mimo) channel estimation to the receiver; transmitting, by the transmitter, a vht-sig-b field to the receiver; and transmitting, by the transmitter, a data field to the receiver, wherein the first ltf, the vht-sig-a field, the second ltf, the vht-sig-b field and the data field are sequentially transmitted, and wherein the second ltf and the data field are mapped to at least one spatial stream based on a mapping matrix but the first ltf and the vht sig-a field are not mapped to the at least one spatial stream..
08/28/14
20140241211

Mimo-ofdm system for robust and efficient neuromorphic inter-device communication


A multiple input multiple output (mimo) orthogonal frequency division multiplexing (ofdm) system for inter-device communication is described. Information data from each neuromorphic chip is coded and modulated, on the basis of destination, into different channels.
08/28/14
20140241192

Method and exchanging information between base station and terminal


A method and apparatus of exchanging information on the number of layers which is supported commonly between the base station and the terminals in multi-user multiple input multiple output (mu-mimo) environment is provided for performance enhancement. The communication method of a terminal in a wireless communication system according to the present disclosure includes receiving a reference signal and information on a number of layers supportable simultaneously from a base station, measuring a channel state value based on the reference signal and the number of layers, determining whether the measured channel state value fulfills a minimum required channel state value, and transmitting, when the measured channel state value fulfills the minimum required channel state value, a value determined based on the measured channel state value to the base station..
08/28/14
20140240178

Portable terminal with antenna device for display element or display assembly including flexible functional region


A portable terminal is provided. The portable terminal includes a flexible display element, a first antenna element disposed at a first region on the display element, a second antenna element disposed at a foldable second region on the display element to face the first region, and a switch element configured to selectively connect the second antenna element.
08/21/14
20140233414

Mu-mimo-ofdma methods and systems for signaling multi-rank cqis and precoders


A method for determining attributes of communication channels of multi-user (mu)-multiple input multiple output (mimo) users in an orthogonal frequency division multiplexing based multiple access (ofdma) system is disclosed. The method comprises receiving from a base station, for at least one sub-band of contiguous sub-carriers, an indication of an estimate of or an upper-bound on a total number of streams that are co-scheduled by the base station on the at least one sub-band or an indication of a fraction of a transmit power at the base station that is applied to streams that are scheduled for transmission to a particular user, determining one or more signal quality measures for the at least one sub-band based on at least one of the fraction or the estimate of or the upper-bound on the total number of streams that are scheduled by the base station on the at least one sub-band, and transmitting to the base station an indication of the one or more signal quality measures.
08/14/14
20140228028

Multiple input multiple output (mimo) based concurrent scan of neighbor cells


Methods, systems, and devices are described for concurrently performing handoff-related measurements for neighbor cells using multiple input multiple output (mimo) antenna resources. In one example, a mobile device is in communication with a serving cell.
08/14/14
20140226745

Multi-user multiple input multiple output wireless communications


A method implemented in a user equipment used in a multi-user multiple input multiple output (mu-mimo) wireless communications system is disclosed. The method includes receiving from a base station an indication of a first modulation type for the user equipment, receiving a first data signal for the user equipment, receiving a second data signal for a co-scheduled user equipment, where a second modulation type for the co-scheduled user equipment is unknown to the user equipment, and deciding the second modulation type.
08/14/14
20140226744

Communication channel optimization systems and methods in multi-user communication systems


Systems and methods of optimizing communication channels in multi-user communication systems are provided. Coding weights are determined based on communication channel state information for communication channels between a transmitter and multiple receivers.
08/14/14
20140226743

Optimum interleaver design for a communication system


In a method for determining interleaver parameters for a multiple input multiple output (mimo) communication system, maximum average distance for a plurality of adjacent spatial streams for a plurality of system configurations is determined. An interleaver parameter set for the plurality of system configurations is determined based on the determined maximum average distance..
08/14/14
20140226741

Implementing multi user multiple input multiple output (mu mimo) base station using single-user (su) mimo co-located base stations


A system that implements multi user multiple inputs multiple outputs (mu mimo) base station using a plurality of co-located single-user (su) mimo base stations is provided herein. The system may include a number n co-located single-user multiple input multiple output (su-mimo) bases stations each having a number k mimo rank, wherein said n co-located su-mimo base stations are configured to share a common antennas array, operating over a common frequency band ; a front-end mimo processor connected to said n co-located su-mimo base stations and further coupleable to said common antennas array; and a back-end coordinator configured to collaboratively assist in optimizing operation of said n co-located su-mimo base stations, such that said n co-located su-mimo base stations and said front-end mimo processor collaboratively implement a multi-user multiple input multiple output (mu-mimo) base station capable of dynamically separating a coverage area into n*k spatial channels..
08/14/14
20140226598

Control channel transmitting method, base station and terminal


A communication system, that includes a base station and a terminal, whereby the base station includes, a transmitting unit that transmits a control channel to the terminal with use of a control channel format selected from among a plurality of control channel formats, each including modulation scheme information, according to whether multiple input multiple output (mimo) transmission is applied or not, and wherein the terminal includes, a receiving unit that receives the control channel transmitted from the base station, wherein a number of bits indicating a modulation scheme included in a control channel format to be selected when the mimo transmission is applied is greater than that included in a control channel format to be selected when the mimo transmission is not applied.. .


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Multiple Input Multiple Output topics: Multiple Input Multiple Output, Communication System, Base Station, Access Point, Modulation, Pilot Signal, Scheduling, Demodulation, Channel Estimation, Communications, Computer Program, Beamforming, User Group, Channel Status, Allocation

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