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| Number | Title | Issue Date |
| 8189714 | 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 defines weighting factors to apply to the MIMO signals... | 05/29/2012 |
| 8160177 | Transmit methods with delay diversity and space-frequency diversity In this invention, several open-loop solutions that encompass the small delay CDD codeword cycling, codeword cycling between different re-transmissions of both small and large delay CDD are proposed. In addition, an open-loop codeword cycling method for SFBC+FSTD sc... | 04/17/2012 |
| 8155239 | UWB system employing gaussian minimum shift key modulation, common mode signaling, and beamforming A multi-mode transmission system supporting OFDM and single-carrier signals is configured to perform interpolation and decimation such that the ratio of the interpolation factor to the decimation factor equals the ratio between the OFDM sampling rate and the single-... | 04/10/2012 |
| 8144808 | Codebook generating method and apparatus for generating a codebook for multi-polarized multiple-input multiple-output (MIMO) systems A communication apparatus and method include: selecting, as a precoding matrix, one of pre-stored at least one matrix Wi, where i is a natural number, and precoding a data stream desired to be transmitted based on the precoding matrix, wherein each diagon... | 03/27/2012 |
| 8139678 | High data rate closed loop MIMO scheme combining transmit diversity and data multiplexing Closed loop multiple-antenna wireless communications system with antenna weights determined by maximizing a composite channel signal-to-interference-plus-noise ratio minimum. Multiplexed symbol streams over subsets of antennas enhance throughout. ... | 03/20/2012 |
| 8139677 | Method for selecting constellation rotation angles for quasi-orthogonal space-time and space-frequency block coding In one embodiment, the present invention generates a single rotation angle that may be used to maximize diversity of a quasi-orthogonal space-time block code that encodes groups of four data symbols. Two rotation angles corresponding the first two data symbols in a ... | 03/20/2012 |
| 8130867 | Pilot design for improved channel and interference estimation Techniques for transmitting pilot and for processing received pilot to obtain channel and interference estimates are described. A terminal may generate pilot symbols for a first cluster in a time frequency block based on a first sequence and may generate pilot symbo... | 03/06/2012 |
| 8130869 | Apparatus for transmitting and receiving data to provide high-speed data communication and method thereof In the present invention, data generated from a source unit are distributed to at least one bandwidth; the data distributed to the respective bandwidths are encoded in order to perform an error correction; the encoded data are distributed to at least one antenna; a ... | 03/06/2012 |
| 8130868 | Radio communication apparatus, radio communication method and program storage medium A radio communication apparatus includes: generation units generating first to mth signals; a storage storing allocation information defining that beams of different quality levels are allocated to first to mth communication apparatuses for each of first to nth subc... | 03/06/2012 |
| 8121218 | Apparatus and method for mapping symbols to resources in a mobile communication system A method and apparatus for mapping coded data symbols to resources in a mobile communication system. An S/P converter converts a serial signal including user data or control information into a plurality of parallel signals. A DFT unit performs Discrete Fourier Trans... | 02/21/2012 |
| 8116403 | Wireless transmission device and wireless transmission method A wireless transmission device of the present invention includes n (where n is an integer of two or more) transmission antennas and a delay imparting section for delaying transmission signals supplied to the n transmission antennas by a maximum delay time (n−1)T o... | 02/14/2012 |
| 8111780 | Codebook generating method and apparatus for generating a codebook for multi-polarized multiple-input multiple-output (MIMO) systems A communication apparatus and method include: selecting, as a precoding matrix, one of pre-stored at least one matrix Wi, where i is a natural number, and precoding a data stream desired to be transmitted based on the precoding matrix, wherein each diagon... | 02/07/2012 |
| 8111779 | Data transmission in wireless communication system Embodiments of the disclosure set forth methods for transmitting data in a wireless communication system. Some example methods include converting a data stream to a symbol set and selecting a first plurality of symbols from the symbol set. The first plurality of sym... | 02/07/2012 |
| 8107556 | OFDM signal transmission method and apparatus An orthogonal frequency division multiplexing (OFDM) signal transmission apparatus which transmits OFDM signals by using a plurality of transmission antennas includes a subcarrier setting device which sets signals for subcarriers so as to use some of the subcarriers... | 01/31/2012 |
| 8098763 | Wireless transmission device and wireless transmission method A wireless transmission device of the present invention includes n (where n is an integer of two or more) transmission antennas and a delay imparting section for delaying transmission signals supplied to the n transmission antennas by a maximum delay time (n−1)T o... | 01/17/2012 |
| 8098762 | Method and apparatus for transmitting/receiving signals in multiple-input multiple output communication system provided with plurality of antenna elements A method and apparatus for transmitting/receiving signals in a multiple-input multiple-output communication system provided with a plurality of antenna elements is disclosed. Accordingly, the present invention provides a plurality of antenna groups at one distance h... | 01/17/2012 |
| 8094751 | System and method for encoding and decoding of space-time block codes in data communication A wireless data communication system. The system includes: a transmitter having a unitary rotation matrix processor for processing incoming information data stream and outputting a plurality of transmission symbols; an encoder for encoding the plurality of transmiss... | 01/10/2012 |
| 8090052 | Systems and methods for digital delayed array transmitter architecture with beam steering capability for high data rate Embodiments include systems and methods for fine control of beam steering for wide band wireless applications using a phased array of antenna elements. In one embodiment, a digitally controlled delay line delays the signal output from a modulator in each branch of m... | 01/03/2012 |
| 8090053 | Midamble allocations for MIMO transmissions Allocation of multiple training sequences transmitted in a MIMO timeslot from multiple transmit antenna elements is provided. For example, a method of generating signals in a MIMO timeslot, the method comprising: selecting a first training sequence; preparing a firs... | 01/03/2012 |
| 8085871 | Adaptive modulation in a multiple input multiple output wireless communication system with optional beamforming A transmitting MIMO wireless device transmits a training sequence to a receiving MIMO wireless device. The receiving MIMO wireless device estimates a channel response based upon the training sequence, determines an estimated transmitter beamforming unitary matrix an... | 12/27/2011 |
| 8077801 | Pilot structure with multiplexed unicast and SFN transmissions Systems and methodologies are described that facilitate multiplexing unicast reference symbols and multicast transmissions in the same transmission time interval. In particular, mechanisms are provided that enable multiplexing unicast reference symbols to single fre... | 12/13/2011 |
| 8077802 | Device, system, and method of resource allocation in a wireless network Device, system, and method of resource allocation in a wireless network. Embodiments include optimal space-frequency architectures for very high peak rates in wireless systems. For example, an apparatus for wireless communication in a power-limited, very wideband sy... | 12/13/2011 |
| 8064538 | Communication device and communication method There is provided a communication device capable of transmitting a transfer rate request signal while reducing it and reducing the interference and power consumption when the transfer rate request signal is transmitted substantially without lowering the transmission... | 11/22/2011 |
| 8059752 | System and method for multiplexing control and data channels in a multiple input, multiple output communications system A system and method for system and method for multiplexing control and data channels in a multiple input, multiple output (MIMO) communications system are provided. A method for transmitting control symbols and data symbols on multiple MIMO layers includes selecting... | 11/15/2011 |
| 8050356 | Transmission apparatus and method for MIMO system A transmitter in a multiple input multiple output (MIMO) communication system is provided. The transmitter includes a multiplexer for multiplexing an input bit stream into a plurality of bit streams, and outputting the bit streams in parallel; a bit-order rearranger... | 11/01/2011 |
| 8050357 | Codebook generating method and apparatus for generating a codebook for multi-polarized multiple-input multiple-output (MIMO) systems A method of generating a codebook for a multiple-input multiple-output (MIMO) system is provided. The codebook generation method includes: assigning a single-polarized preceding matrix to diagonal blocks among a plurality of blocks arranged in a block diagonal forma... | 11/01/2011 |
| 8050358 | Base station transmitter for mobile telecommunication system, method for that system The present invention relates to a transmit diversity method of a mobile communication system and a base station transmitting apparatus using the same. A first code and a second code that is diversity-encoded from the first code are generated, and transmit symbols a... | 11/01/2011 |
| 8045644 | Mobile terminal, radio communication apparatus and radio communication method A radio communication system that uses multiple antennas to transmit signals to a plurality of mobile terminals, and that measures the reception quality of each signal that is transmitted from each antenna on a transmitting side and received by the mobile terminal, ... | 10/25/2011 |
| 8040975 | Apparatus and method for transmitting signals with multiple antennas An apparatus for transmitting signals with multiple antennas is disclosed. The multiple antenna transmission apparatus performs space-time encoding or space-frequency encoding, and cyclically delays the encoded symbol with a plurality of delay-values to generate a p... | 10/18/2011 |
| 8036307 | Spatio-temporal processing for communication A space-time signal processing system with advantageously reduced complexity. The system may take advantage of multiple transmitter antenna elements and/or multiple receiver antenna elements, or multiple polarizations of a single transmitter antenna element and/or s... | 10/11/2011 |
| 8031805 | Beamforming by antenna puncturing Beamforming is provided for a wireless MIMO device by using antenna puncturing to reduce the number of transmit antennas that are used to transmit data for certain subcarriers. In a conventional approach, if N spatial streams are being used to provide spatial multip... | 10/04/2011 |
| 8031806 | Mixed mode preamble for MIMO wireless communications A preamble of a frame for a multiple input multiple output (MIMO) wireless communication for a first transmit antenna of the MIMO communication includes a legacy preamble portion in accordance with a legacy wireless communication protocol. The preamble of the frame ... | 10/04/2011 |
| 8027407 | Method and apparatus for asynchronous space-time coded transmission from multiple base stations over wireless radio networks A method and apparatus is disclosed herein for asynchronous space-time coded transmission from multiple stations. In one embodiment, the method comprises one or more terminals and at least two base stations wirelessly communicating information-bearing signals to the... | 09/27/2011 |
| 8023589 | Wireless MIMO transmitter with antenna and tone precoding blocks Various wireless precoding systems and methods are presented. In some embodiments, a wireless transmitter comprises an antenna precoding block, a transform block, and multiple transmit antennas. The antenna precoding block receives frequency coefficients from multip... | 09/20/2011 |
| 8019016 | System and method of transmit beam selection A system and method of beamforming facilitate beam selection without requiring an exhaustive search. In some implementations, a beamforming technique may select candidate vectors to construct a beamforming matrix without having to compute each matrix element. ... | 09/13/2011 |
| 8005165 | MIMO-OFDM transmission device, MIMO-OFDM transmission method, reception apparatus and reception method A MIMO-OFDM transmission and reception apparatus is provided which allows high accuracy estimation of frequency offset; high accuracy estimation of a transmission path fluctuation and high accuracy synchronization/signal detection. A mapping section generates a plur... | 08/23/2011 |
| 8005164 | Link adaptation and antenna selection in cooperative multiple access systems Embodiments of the present invention provide a system comprising a bit stream merger to merge a bit stream of a wireless apparatus with at least one bit stream associated with a wireless device in a common transmit cluster to form a merged bit stream; a time-frequen... | 08/23/2011 |
| 7978784 | Antenna selection and training using a spatial spreading matrix for use in a wireless MIMO communication system A wireless communication system and method uses a spatial spreading matrix to distribute the encoded spatial data streams to a number of transmit chains and further uses the spatial spreading matrix for antenna selection computation in a transmitter. The spatial spr... | 07/12/2011 |
| 7953181 | MIMO transmitting apparatus and MIMO transmitting method A MIMO transmitting apparatus wherein a low power consumption and a high performance can be achieved by taking the influence of variation in communication distance into account. In this apparatus, a low power consumption design part (701) selectively decides,... | 05/31/2011 |
| 7944993 | Downstream broad beam diversity A satellite communication system is provided according to one embodiment of the invention. The satellite communication system includes a plurality of satellites, a gateway and a plurality of subscriber terminals in communication with the gateway through the satellit... | 05/17/2011 |
