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US20070183533 MIMO system with spatial diversity  
A method of transmitting a wireless signal (FIGS. 2 and 3A) is disclosed. A data stream (DATA) is received at a first transmitter (210). The data stream is also received by a second transmitter...
US20110299629 METHODS AND APPARATUS EMPLOYING FEC CODES WITH PERMANENT INACTIVATION OF SYMBOLS FOR ENCODING AND DECODING PROCESSES  
Encoding of a plurality of encoded symbols is provided wherein an encoded symbol is generated from a combination of a first symbol generated from a first set of intermediate symbols and a second...
US20060050811 Shared frequency transmitter  
A shared frequency transmitter for use in a network environment where transmitters and receivers of plural radio communication systems in which the same frequency is used exist is disclosed. The...
US20140247896 Low Complexity Maximum Likelihood Detection of Concatenated Space Codes for Wireless Applications  
Good transmission characteristics are achieved in the presence of fading with a transmitter that employs a trellis coder followed by a block coder. Correspondingly, the receiver comprises a...
US20140254719 SYMBOL VECTOR-LEVEL COMBINING TRANSMITTER FOR INCREMENTAL REDUNDANCY HARQ WITH MIMO  
Techniques are provided for transmitting and receiving a mother code in an incremental redundancy hybrid automatic repeat-request protocol. A set of information bits corresponding to a message may...
US20150222332 Method of Cooperative Emission, Signal, Source Entity, Relay Entity, Method of Reception, Destination Entity, System and Computer Program Corresponding Thereto  
A method is provided for transmitting an information sequence from a source entity to a recipient entity, via at least one relay entity. The method includes: transmitting, by said source entity,...
US20070263746 Feedback frame structure for subspace tracking precoding  
The specification and drawings present a new method, system, apparatus and software product for resolving a feedback frame structure for implementing subspace tracking precoding for a MIMO-OFDM...
US20110170635 TRANSMITTER DIVERSITY TECHNIQUE FOR WIRELESS COMMUNICATIONS  
A simple block coding arrangement is created with symbols transmitted over a plurality of transmit channels, in connection with coding that comprises only simple arithmetic operations, such as...
US20120082263 Orthogonal Resource Selection Transmit Diversity  
Methods are disclosed for transmitting a plurality of information bits using resource selection on multiple antennas. In one or more embodiments, the methods include: selecting a first and a...
US20110026630 Power Allocation of Spatial Streams in MIMO Wireless Communication System  
Multiple-input multiple-output (MIMO) wireless communication techniques are provided that involve mapping multiple spatial streams to corresponding modes of a wireless channel between a plurality...
US20120087442 DESIGN ASPECTS TO SUPPORT LTE-A DOWNLINK HI-ORDER MIMO  
A method of operation of a MIMO transmitter, in a cellular network supporting both legacy standard-compliant mobile terminals and next generation standard-compliant mobile terminals, the method...
US20070140364 Interleaver for IEEE 802.11n standard  
A MIMO wireless system includes a transmitter having a parser that parses a bit stream into multiple spatial data streams and multiple interleavers corresponding to the multiple spatial data...
US20080165892 Using the Preamble in an OFDM-Based Communications System to Indicate the Number of Guard Tones  
Indicating the number of guard tones on the preamble frames is described for an OFDM or ODFMA based wireless communication system. The information of the number of guard tones or the range of the...
US20110200143 METHOD FOR TRANSMITTING SOUNDING REFERENCE SIGNAL SEQUENCE USING PLURAL ANTENNAS  
Disclosed is a method for transmitting a sounding reference signal from a mobile terminal that includes plural antennas. Different plural sounding reference signal sequences that have mutual...
US20110129033 METHOD AND APPARATUS FOR TRANSMITTING RANK INDICATION INFORMATION  
The present invention discloses a method and apparatus for transmitting rank indication information, in which the method comprises: when rank indication information and a sounding reference signal...
US20080212714 Spatial multiplexing architecture with finite rate feedback  
A spatial multiplexing architecture is described for a MIMO communications system wherein the receiver feeds a number of bits of channel state information back to the transmitter. The architecture...
US20120207237 WIRELESS COMMUNICATION SYSTEM USING PILOT SUBCARRIER ALLOCATION  
A method of transmitting pilot signals by a transmitter in a multiple-input multiple-output (MIMO) antenna system using an orthogonal frequency division multiplexing (OFDM) scheme includes...
US20090129502 WIRELESS FEEDBACK SYSTEM AND METHOD  
A codebook C is provided in a MIMO transmitter as well as a MIMO receiver. The codebook C will include M codewords ci, where i is a unique codeword index for each codeword ci. Each codeword...
US20090161794 CHANNEL ADAPTIVE VIDEO TRANSMISSION SYSTEM FOR USE WITH LAYERED VIDEO CODING AND METHODS FOR USE THEREWITH  
A video transmission system includes a transceiver module that transmits a video signal to a remote device over at least one RF communications channel wherein the video signal is transmitted as at...
US20140314183 Scattered Pilot Pattern And Channel Estimation Method For MIMO-OFDM Systems  
A method and apparatus are provided for reducing the number of pilot symbols within a MIMO-OFDM communication system, and for improving channel estimation within such a system. For each...
US20090074094 BEACON SYMBOLS WITH MULTIPLE ACTIVE SUBCARRIERS FOR WIRELESS COMMUNICATION  
Techniques for transmitting information using beacon symbols in a wireless communication system are described. In one design, a transmitter may map information to multiple subcarriers among a...
US20080123578 Method Of Determining Feedback In A Communication System  
A method of determining feedback in a communication system, wherein data is transmitted from a transmitter to a receiver, and in response to data reception at the receiver, feedback is generated...
US20120183089 MODIFYING A SIGNAL BY CONTROLLING TRANSMIT DIVERSITY PARAMETERS  
A method for modifying a signal transmitted from a mobile communication device comprising by perturbing a transmit diversity parameter from its nominal value by modulating the parameter with...
US20090135926 JOINT CONSTELLATION MULTIPLE ACCESS  
A method for communication includes defining N respective symbol constellations in a signal space for N transmitters (24), N(2, subject to a predetermined power constraint, so as to produce a...
US20060109931 Mobile communication receiver and transmitter  
A receiver for mobile communication includes a wireless scheme parameter storing unit (23) configured to store a plurality of characteristics of multiple wireless schemes, a wireless scheme...
US20100195480 METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING A PREAMBLE FOR SYNCHRONIZATION IN A MIMO-OFDM COMMUNICATION SYSTEM  
A method and apparatus for transmitting a preamble for frame synchronization and channel estimation in a MIMO-OFDM communication system are provided. An OFDM communication system using Q transmit...
US20090232245 MULTI-RESOLUTION BEAMFORMING BASED ON CODEBOOKS IN MIMO SYSTEMS  
Certain aspects of the present disclosure relate to methods for beamforming that achieve beamforming optimality criterions. Some proposed beamforming techniques are based on antenna directions...
US20090304109 Retransmission method for HARQ in MIMO systems  
In a closed-loop wireless communication system (200), a codeword retransmission scheme is provided which allows retransmission of a single codeword using a higher order transmission rank, which...
US20090041150 Method and apparatus of codebook-based single-user closed-loop transmit beamforming (SU-CLTB) for OFDM wireless systems  
A method includes broadcasting, at a transmitter, messages comprising antenna configuration, antenna spacing and a number of antenna of the transmitter and reference signals; generating, at a...
US20070153934 Constant uneven power loading in beamforming systems for high throughput wireless communications  
An apparatus and method for closed-loop signaling over multiple channels in a telecommunication system, wherein a power loading method using constant uneven power loading under the power sum...
US20050213686 Reduced complexity transmit spatial waterpouring technique for multiple-input, multiple-output communication systems  
A waterpouring system and method for use with a multiple-input, multiple-output (MIMO) transmitter. In one embodiment, the waterpouring system includes an encoding decision subsystem that selects...
US20140369443 METHOD AND APPARATUS FOR CONVEYING ANTENNA CONFIGURATION INFORMATION VIA MASKING  
A method, apparatus and computer program product are provided for conveying information regarding the antenna configuration and/or the transmission diversity scheme to a recipient, such as a...
US20090128381 CODEBOOK FOR MULTIPLE USER MULTIPLE INPUT MULTIPLE OUTPUT SYSTEM AND COMMUNICATION DEVICE USING THE CODEBOOK  
Disclosed are a Multiple User Multiple Input Multiple Output (MU-MIMO) codebook design method, and a communication device using the codebook. A MU-MIMO codebook design method includes analyzing...
US20080205549 Method and System for a Wideband Polar Transmitter  
Certain aspects of a method and system for a wideband polar transmitter may be disclosed. Aspects of the method may include polar modulating a plurality of signals by generating a plurality of...
US20060239373 Beamforming in a wireless communication with a partial estimation to reduce overhead  
A method for beamforming in a wireless communication begins by receiving a baseband signal. The method continues by receiving a feedback signal that includes a subset of angles, wherein a set of...
US20060056540 Dynamic pilot subcarrier and data subcarrier indexing structure for wireless MIMO communication systems  
The present invention provides a subcarrier index coordinator for use with a multiple-input, multiple-output (MIMO) transmitter having N transmit antennas, N being at least two, wherein each...
US20090034591 METHOD OF PAIRING DEVICES  
Some aspects include a method of associating electronic devices for communicating data. The method includes receiving a message on a first device indicating that a second device is discoverable...
US20120177091 LONG TRAINING SEQUENCE FOR MIMO WLAN SYSTEMS  
A method for configuring a multiple input multiple output (MIMO) wireless communication begins by generating a plurality of preambles for a plurality of transmit antennas. Each of the plurality of...
US20080123775 Modifying a signal by controlling transmit diversity parameters  
A feedback signal is received from a feedback communication device. The feedback signal provides feedback information for a signal at a feedback rate. A modifying communication device modifies the...
US20080310550 REDUNDANCY SYSTEM FOR A TELECOMMUNICATION SYSTEM AND RELATED METHODS  
A redundancy system for a co-channel telecommunication system and related methods. Implementations of the redundancy system may include at least a first modulator and a second modulator having a...
US20130089123 COHERENT TRANSMISSION FROM DISTRIBUTED WIRELESS TRANSMITTERS  
In one aspect, a distributed coherent transmission system enables transmissions from separate wireless transmitters with independent frequency or clock references to emulate a system where all the...
US20090232254 Detector Using Limited Symbol Candidate Generation for MIMO Communication Systems  
A circuit detects symbols transmitted from multiple transmitting antennas to multiple receiving antennas. A distance block for an initial transmitting antenna in an ordering of the transmitting...
US20150117435 Transmitter for Transmitting Discovery Signals, A Receiver and Methods Therein  
A transmitter 103 and a method therein for transmitting discovery signals to a receiver 107. The transmitter 103 and the receiver 107 arc comprised in a radio communications system 100. The...
US20060009168 Method for controlling transmissions using both diversity and nondiversity transmission schemes  
A wireless communications system is provided in which transmissions may be made in either a diversity mode or a non-diversity mode on a slot by slot basis. When transmitting in the diversity mode,...
US20140205042 METHOD AND SYSTEM FOR USE OF QUADRATURE HYBRIDS FOR CLOSED AND OPEN LOOP BEAM FORMING TRANSMIT DIVERSITY  
The present implementation is directed to a system and method of mobile transmit diversity and, more particularly, to a device which can operate in any of several modes, including a transmit...
US20090080566 SPACE-TIME BLOCK CODING SYSTEMS AND METHODS  
Althrough orthonormal space-time coding matrices provide for optimal communication system performance in that associated correlation matrices include no non-zero off-diagonal elements, unity code...
US20130039437 Method of Precoding with a Codebook for a Wireless System  
A quantized multi-rank beamforming scheme for multiple-antenna systems such as a multiple-input-multiple-output (MIMO) wireless downlink. User equipment (UE) estimates downlink channel and...
US20100014608 DATA TRANSMITTING AND RECEIVING METHOD USING PHASE SHIFT BASED PRECODING AND TRANSCEIVER SUPPORTING THE SAME  
A method for performing a precoding based on a generalized phase shift or a precoding based on an extended phase shift in a Multi-Input Multi-Output (MIMO) system employing several sub-carriers,...
US20090190685 MIMO COMMUNICATION SYSTEM AND TRANSMISSION STATION  
An imbalanced amplitude is produced to a pair of weighing factors (U1,1 and U1,2, U2,1 and U2,2) with respect to the transmission streams multiplexed to any of the plurality of transmission...
US20090129501 Optimal signaling and selection verification for transmit antenna selection with erroneous feedback  
A method is provided for receiving data at a receiver via a communication channel from a transmitter having at least two transmitter antennas, the method including: receiving (S204) a codebook...

Matches 1 - 50 out of 282 1 2 3 4 5 6 >