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US20120269250 PEER DISCOVERY IN A WIRELESS WIDE AREA NETWORK SYSTEM  
A method of wireless communication of a wireless device includes receiving a signal indicating WWAN resources that can be utilized for communicating peer discovery signals. In addition, the method...
US20130070867 COMMUNICATION DEVICE  
Improving the accuracy of estimation of channel responses in receiving signals from a plurality of antennas is disclosed. A transmitting device of a base station includes a preamble A generating...
US20110150116 Double Search Algorithm of User Group Selection for Multiuser MIMO Downlink Transmission  
A method and system for a double search algorithm of user group selection for multiuser MIMO downlink transmission are provided. The use of optimal brute-force user group selection may require...
US20090245400 METHOD FOR SELECTION OF ERROR-CORRECTION CODE IN MIMO WIRELESS COMMUNICATION SYSTEMS  
A method that selects an error-correction code for use in a multiple-input multiple output (MIMO) wireless communication system is disclosed that optimizes the performance of the MIMO wireless...
US20120300864 CHANNEL ESTIMATION BASED ON COMBINED CALIBRATION COEFFICIENTS  
Calibration coefficients are combined to provide more robust calibration. In some implementations, calibration coefficients are generated by acquiring two or more sets of calibration coefficients...
US20110188591 Method and Apparatus for Impairment Correlation Estimation in MIMO Systems  
The teachings herein disclose methods and apparatus that simplify impairment correlation estimation for received signal processing, based on determining, for any given processing interval, which...
US20140241447 Receiver With Cyclic Prefix Determination  
A user equipment (UE) performs a transform domain (DFT) based method to detect the cyclic prefix (CP) length that is being used by a base station for cellular communications. The detected CP...
US20100246560 METHOD OF COMMUNICATING WITH USER COOPERATION AND TERMINAL DEVICE OF ENABLING THE METHOD  
Proposed is a user cooperative terminal device. The user cooperative device includes: a signal detector to receive a signal transmitted from a source node and detect a received signal; and a...
US20120008702 METHOD FOR PRECODING AND DECODING DISTRIBUTING MIMO CHANNELS IN RELAY-BASED DF COOPERATIVE WIRELESS NETWORKS  
It is well known that relay-based DF cooperative wireless networks outperform AF cooperative networks. However, this performance enhancement is achievable through considerable signal processing...
US20110122959 OFDM MODULATION/DEMODULATION METHOD, OFDM MODULATION DEVICE, OFDM DEMODULATION DEVICE, AND OFDM MODULATION/DEMODULATION SYSTEM  
An OFDM modulation/demodulation method in a transmission system that transmits data from a transmission source to a transmitting destination through OFDM modulation/demodulation is provided, which...
US20110150118 ANTENNA ARRANGEMENT FOR INTERFERENCE REDUCTION AND MIMO COMMUNICATION  
The present invention relates to an antenna arrangement for use in a wireless communication system, where the arrangement comprises at least two single-polarized antenna functions. Each antenna...
US20120219077 METHOD AND APPARATUS FOR GENERATING/TRANSMITTING A FRAME FOR WIRELESS COMMUNICATION, AND SYNCHRONIZATION ESTIMATION METHOD FOR WIRELESS COMMUNICATION  
Disclosed is a technique related to a method and apparatus for generating a preamble and a data frame for wireless communication, and to a synchronization estimation method using the preamble....
US20100002781 TRANSMITTER IDENTIFICATION USING A CONTINUOUS WAVE TONE  
A methodology for transmitter identification for a single frequency network is provided using a single CW tone. The tone can be transmitted outside the transmitter's active band. It is possible to...
US20110026626 METHOD OF AND A RADIO TRANSMISSION SYSTEM AND RADIO ACCESS EQUIPMENT FOR CELLULAR WIRELESS RADIO TRANSMISSION  
Radio transmission in an Orthogonal Frequency Division Multiplex, OFDM, based cellular wireless radio transmission system, wherein radio access equipment of the system connects to multiple...
US20110274188 METHOD AND PRECODER INFORMATION FEEDBACK IN MULTI-ANTENNA WIRELESS COMMUNICATION SYSTEMS  
A method for two component feedback in wireless communication systems is disclosed, with a wireless communication device sending a first representation of a first matrix chosen from a first...
US20130064316 METHOD OF AND GENERATOR FOR GENERATING PREAMBLE SEQUENCES IN COMMUNICATION SYSTEMS  
A method forms a preamble sequence in a wireless communication system. The method comprises determining a value K related to a time-domain characteristic of the wireless communication system so...
US20090245402 APPARATUS AND METHOD FOR TILE PROCESSING IN WIRELESS COMMUNICATIONS  
An apparatus and method for tile processing using a plurality of tile descriptors comprising defining the plurality of tile descriptors in a time-frequency plane; preparing the plurality of tile...
US20110080967 Methods and Arrangements in a Wireless Communication System for Producing Signal Structure with Cyclic Prefix  
The present invention relates to methods and arrangements in a wireless communication system supporting cyclic-prefix insertion, using a symbol sequence comprising a number of samples for...
US20090252070 AIRLINK MANAGEMENT IN A WIRELESS BROADCAST SYSTEM  
A wireless broadcast system that collects content for distribution over a wireless communication network. Multiple independent content streams can be coarsely interleaved by collecting multiple...
US20100303165 PILOT TRANSMISSION AND CHANNEL ESTIMATION FOR AN OFDM SYSTEM WITH EXCESS DELAY SPREAD  
Pilot transmission and channel estimation techniques for an OFDM system with excess delay spread are described. To mitigate the deleterious effects of excess delay spread, the number of pilot...
US20130272346 COVERAGE IMPROVEMENT IN WIRELESS SYSTEMS WITH FIXED INFRASTRUCTURE BASED RELAYS  
Infrastructure relays are used to relay signals to multi-antenna receivers where the received signals are then processed using MIMO processing. The transmissions can use spatial multiplexing...
US20110002407 ENCODING AND DECODING METHOD FOR TRANSMITTING AND ESTIMATING MULTIPLE SIMULTANEOUS CHANNELS  
An improved encoding and decoding method for the transmission and estimation of multiple simultaneous channels, thereby solving the problem of shortening the time required to measure the...
US20090135925 TRANSMITTER, OFDM COMMUNICATION SYSTEM, AND TRANSMISSION METHOD  
In a cellular system using an OFDM scheme, a transmitter multiplies subcarriers for channel estimation by codes and transmits them, the codes being such that a phase difference φ of the code...
US20120307925 Peak-To-Average Power Ratio Reduction For Wireless Communication Systems  
Disclosed is a wireless communication signal peak-to-average power ratio reduction, method. The method comprises calculating a peak envelope from an envelope of an input signal using a clipping...
US20110058598 GENERALIZED DECISION FEEDBACK EQUALIZER PRECODER WITH INPUT COVARIANCE MATRIX CALCULATION FOR MULTI-USER MULTIPLE-INPUT MULTIPLE-OUTPUT WIRELESS TRANSMISSION SYSTEMS  
To realize a GDFE precoder for multi-user MIMO systems, which significantly reduces the computational cost while resulting in no capacity loss, one method comprises computing an effective UL...
US20120113974 METHOD FOR SENDING A MIDDLE PILOT  
A method for sending a middle pilot is disclosed. The sending method comprises: selecting a middle pilot sequence set; creating a middle pilot subcarrier union; mapping by a base station a middle...
US20140334561 Method and System for Symbol Detection Using Matrix Decomposition  
This application proposes using successive interference cancellation with an ordered matrix decomposition coupled with a search based ordered layer detection technique. The search based ordered...
US20110075749 WIRELESS COMMUNICATION METHOD, WIRELESS COMMUNICATION SYSTEM AND BASE STATION  
One of the objects of the present invention is to more completely avoid impossibility of access between a mobile station and a base station, in wireless communication using an OFDM (Orthogonal...
US20110058618 METHOD AND APPARATUS FOR INTERFERENCE MITIGATIONI IN A BASEBAND OFDM RECEIVER  
A method of compensating interference of received symbols in a MIMO OFDM receiver employs MMSE equalization and LLR scaling, and a MIMO OFDM receiver includes a linear MMSE equalizer. The method...
US20100329371 MULTIPLE INPUT MULTIPLE OUTPUT (MIMO) COMMUNICATION SYSTEM FOR FEEDFORWARDING INTERFERENCE VECTOR INDICATOR  
Provided are a base station configured to provide an interference vector indicator to a terminal, and the terminal configured to recognize at least one remaining precoding vector using the...
US20120177097 METHOD FOR GENERATING HYBRID CODEBOOK AND HYBRID MU-MIMO SYSTEM  
A method for generating a hybrid codebook for a Multi-User Multiple-input Multiple-Output (MU-MIMO) system includes the steps of: generating a parent matrix set including a plurality of M×M...
US20110122930 OFDM peak-to-average power ratio reduction method  
The OFDM peak-to-average power ratio reduction apparatus and method provides a compressive sensing algorithm that estimates the sparsity pattern of a sparse vector by a limited number of...
US20080101485 Receiver and transmitter in a telecommunication system  
In telecommunication systems, in particular OFDM telecommunication systems, there is a Fourier transformer for transforming the data signal from time to frequency domain. The present invention...
US20120163437 Extension of Physical Downlink Control Channel Coverage  
It is provided an apparatus, including observing means configured to observe a first parameter; deciding means configured to decide, based on the first parameter, whether or not an original search...
US20120014465 ITERATIVE CHANNEL ESTIMATION METHOD AND APPARATUS FOR ICI CANCELLATION IN MULTI-CARRIER  
A linear iterative channel estimation scheme and corresponding pilot allocation scheme are provided to perfect a channel model that cancels the Inter-Carrier Interference (ICI) for multi-carrier...
US20110116360 OFDM SYSTEM AND METHOD EMPLOYING OFDM SYMBOLS WITH KNOWN OR INFORMATION-CONTAINING PREFIXES  
Systems and methods for transmitting and receiving OFDM symbols are provided which enable the otherwise wasted transmission time normally used as a prefix for each OFDM symbol to contain useful...
US20110164555 Cooperative Relay Communication in Wireless OFDMA Star Networks  
A wireless star network includes including a master node (master) and a set of N slave nodes (slaves), wherein the network uses orthogonal frequency division multiple access (OFDMA). The master...
US20110007673 Method and Apparatus for Acquiring Resource Allocation of Control Channel  
A method of acquiring a resource allocation of a control channel includes acquiring a resource region of the control channel in a second subframe based on a first resource allocation of the...
US20120172041 METHODS FOR CELL SEARCH IN SYNCHRONOUS INTERFERENCE LIMITED CHANNELS  
The cell searcher module (CSM) of a wireless communication device detects that the device is in coverage region of an eNB by processing received signal associated with the primary synchronization...
US20110268205 Low-rate Feedback to Enhance Transmission Using Multi-Rank Beamforming  
Methods and apparatus are disclosed for applying successive multi-rank beamforming strategies (e.g., successive precoding strategies) for the design of precoders over a set of parallel channels....
US20110249548 EFFICIENT ZADOFF-CHU SEQUENCE GENERATION  
Efficient apparatus and method for Zadoff-Chu (“Chu”) sequence generation avoids additional processing and hardware complexity of conventional quadratic generating formula followed by Discrete...
US20110194630 SYSTEMS AND METHODS FOR REPORTING RADIO LINK FAILURE  
A mobile communications device is provided with a wireless module and a controller module. The wireless module receives a plurality of downlink signals from a service node and determines a...
US20130022141 TRANSFORMATION APPARATUS AND METHOD  
The present invention provides a transformation apparatus for transforming a long-term wideband channel property feedback. The transformation apparatus comprises: a first transformation unit for...
US20110268094 Systems and methods for uplink multi-user multiple input multiple output (MU MIMO) medium access and error recovery  
Embodiments of systems and methods for uplink multi-user multiple input multiple output (MU MIMO) medium access and error recovery are generally described herein. Other embodiments may be...
US20130177089 METHOD OF PERFORMING PEAK REDUCTION AND CLIPPING MITIGATION  
The method of performing peak reduction and clipping mitigation provides a compressive sensing algorithm at the receiver of a peak-reducing sparse clipper applied to an OFDM signal at the...
US20100322166 MULTI-USER MULTIPLE INPUT MULTIPLE OUTPUT WIRELESS COMMUNICATIONS  
Certain aspects of the present disclosure relate to a method for enhanced multi-user multiple input multiple output (MU-MIMO) wireless communications. The proposed method may reduce and/or...
US20110026622 HYBRID AUTOMATIC REPEAT REQUEST OPERATION AND DECODING STATUS SIGNALING FOR UPLINK MULTIPLE-INPUT MULTIPLE-OUTPUT  
Systems and methodologies are described that facilitate conveying decoding statuses in a wireless communication environment. A UE can transmit a plurality of codewords as part of an uplink...
US20140376650 SYSTEMS AND METHODS FOR ADVANCED ITERATIVE DECODING AND CHANNEL ESTIMATION OF CONCATENATED CODING SYSTEMS  
Systems and methods for decoding block and concatenated codes are provided, including channel state information estimation such as by using optimum filter lengths based on channel selectivity and...
US20120155560 LOW COMPLEXITY ITERATIVE MIMO RECEIVER BASED ON SUCCESSIVE SOFT INTERFERENCE CANCELLATION AND MMSE SPATIAL FILTERING  
A multiple-input multiple-output (MIMO) system for demapping uses a single stream system of iterative passes in a preferred order using the latest soft-information for better interference...
US20110116410 METHOD FOR CONTROLLING INTER-CELL INTERFERENCE IN A MOBILE COMMUNICATION SYSTEM  
A method for controlling inter-cell interference (ICI) in a mobile communication system by transmitting uplink control information from a base station in a home cell to a terminal of a neighboring...