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| Number | Title | Issue Date |
| 8179315 | Iterative technique for fast computation of TxBF steering weights Systems and methods are provided for directing radiated energy from a transmitting device towards a receiving device using multiple antennas. Channel weights, representing signal attenuation and a phase rotation induced by a transmission medium, are determined at a ... | 05/15/2012 |
| 8134504 | Community antenna system in the closed loop mode and the method thereof A community antenna system in a closed loop mode and a method thereof are provided, the system includes two groups of pre-weighting processing modules, beamforming modules and antenna arrays connected in turn. The method includes the following processes: performing ... | 03/13/2012 |
| 8009097 | Beamforming with partial channel knowledge A method in a transmitter for selecting steering vectors for simultaneously transmitting a plurality of streams (NS) between the transmitter and a receiver, where the receiver has NR receive antennas, where the transmitter knows respective chan... | 08/30/2011 |
| 7982669 | Adaptive beam-steering methods to maximize wireless link budget and reduce delay-spread using multiple transmit and receive antennas A method and apparatus for adaptive beam-steering are disclosed. In one embodiment, the method comprises performing adaptive beam steering using multiple transmit and receive antennas, including iteratively performing a pair of training sequences, wherein the pair o... | 07/19/2011 |
| 7978135 | Antenna beam forming systems/methods using unconstrained phase response Beamforming methods for operating a transceiver including an antenna having a plurality of antenna feed elements include defining a plurality of real valued antenna gain constraint values associated with a plurality of geographic constraint points within a geographi... | 07/12/2011 |
| 7898478 | Method and system for analog beamforming in wireless communication systems A method and system for analog beamforming in a wireless system is provided. Analog beamforming involves performing an iterative beam acquisition process based on beam search training, determining transmit and receive beamforming vectors including phase weighting co... | 03/01/2011 |
| 7893871 | Beamforming with partial channel knowledge A method and system for beamforming with partial channel knowledge comprises beamforming one or more streams from a beamformer to one or more receive antennas of a beamformee whose channels are known to the beamformer. In response to the beamformer having a larger n... | 02/22/2011 |
| 7889130 | Multi-antenna transmitting apparatus and retransmittal method of multi-antenna transmitting apparatus A multi-antenna transmitting apparatus wherein a relatively simple selection procedure can be used to reconcile the data transmission rate and the received data quality. When a transport signal, which is required to have a higher quality than other signals, is to be... | 02/15/2011 |
| 7889131 | Beamformed space time code communication with testing spatial signature generation An apparatus, logic and method are provided to improve beamformed space time code (STC) wireless communication. A first device comprising a plurality of antennas receives signals at the plurality of antennas transmitted from a first antenna of a second device. A tes... | 02/15/2011 |
| 7884763 | Orthogonal/partial orthogonal beamforming weight generation for MIMO wireless communication Techniques are provided for computing beamforming weight vectors useful for multiple-input multiple-output (MIMO) wireless transmission of multiple signals streams from a first device to a second device. The techniques involve computing a plurality of candidate beam... | 02/08/2011 |
| 7817089 | Beamformer using cascade multi-order factors, and a signal receiving system incorporating the same A beamformer includes a number (T) of consecutive combining stages. A Tth combining stage includes a converging unit. Each of first to (T−1)th combining stages includes a plurality of converging units. The number of the converging units in a ... | 10/19/2010 |
| 7714783 | Method and system for analog beamforming in wireless communications A method and system for analog beamforming for wireless communication is provided. Such analog beamforming involves performing channel sounding to obtain channel sounding information, determining statistical channel information based on the channel sounding informat... | 05/11/2010 |
| 7714782 | Phase arrays exploiting geometry phase and methods of creating such arrays In the context of array sensors such as radar, sonar, and communications receiver arrays, the present invention exploits the geometry phase components of radiated wavefronts associated with the signals of interest in order to reduce the bandwidth requirements for DO... | 05/11/2010 |
| 7710319 | Adaptive beam-steering methods to maximize wireless link budget and reduce delay-spread using multiple transmit and receive antennas A method and apparatus for adaptive beam-steering are disclosed. In one embodiment, the method comprises performing adaptive beam steering using multiple transmit and receive antennas, including iteratively performing a pair of training sequences, wherein the pair o... | 05/04/2010 |
| 7705780 | Electronic support measures (ESM) tracking system and method An ES tracker for tracking an emitter target, including ships and airborne targets, includes a sensor for receiving a signal emitted by the target; a sensor processor for processing the signal and outputting a measurement; and an information processor for processing... | 04/27/2010 |
| 7646340 | Method for processing array antenna signal A method for processing an array antenna signal is disclosed, comprising steps of: a. determining the number of antenna units participating the processing of the array antenna signals and selecting antenna units to participate the array antenna signal processing fro... | 01/12/2010 |
| 7609206 | Enabling digital beamforming techniques for RF systems having short repetitive synchronization sequences A system and method of enabling digital beamforming (DBF) for use with RF receiver systems with a multi-element array antenna having short repetitive synchronizaton sequences in a noise and/or jamming environment. The method includes the following steps: a) receivin... | 10/27/2009 |
| 7605755 | Antenna array including virtual antenna elements A method and associated system for effectively increasing the number of antenna elements within a multi-element antenna system through computation of a response of “virtual” antenna elements located along an antenna array. The physical elements of the array are ... | 10/20/2009 |
| 7477190 | Smart antenna beamforming device in communication system and method thereof A beamforming device includes a Direction Of Arrival (DOA) estimation unit for estimating DOAs of the received signals based on a data subcarrier matrix; a pre-spatial filtering unit for using the estimated DOA, performing a filtering operation for the data subcarri... | 01/13/2009 |
| 7443341 | Method for deriving weight vectors to be used at the time of transmitting signals from a plurality of antennas, and transmitting apparatus and communication system utilizing said method A plurality of antennas transmit multicarrier signals composed of a plurality of streams. An IF unit acquires, per carrier, a channel matrix having elements the number of which is determined by the number of a plurality of transmitting antennas and the number of a p... | 10/28/2008 |
| 7432856 | Signal simulation device A signal simulation device for testing and developing radio receivers adapted to orientate antenna beams to different radio transmitters and to simultaneously suppress interference signals, comprises an antenna array, a signal generator generating reproducible digit... | 10/07/2008 |
| 7414578 | Method for efficiently computing the beamforming weights for a large antenna array A method of determining the size of a sub-array for an antenna array is described. The method includes choosing a number of elements of a sub-array of antenna elements. Further, the method includes determining a direction of arrival of the signal using data from the... | 08/19/2008 |
| 7414579 | Blind signal separation using correlated antenna elements A communications device for separating source signals provided by M signal sources includes an antenna array comprising N correlated antenna elements for receiving at least N different summations of the M source signals, with N and M being greater than 1. A receiver... | 08/19/2008 |
| 7411547 | Antenna array including virtual antenna elements A method and associated system for effectively increasing the number of antenna elements within a multi-element antenna system through computation of a response of “virtual” antenna elements located along an antenna array. The physical elements of the array are ... | 08/12/2008 |
| 7408508 | Signal separation based on linear independent signal summation sets and an antenna array A method for operating a communications device for separating an independent source signal from a mixture of source signals provided by M signal sources includes receiving at an antenna array at least M different summations of the M source signals. The at least M di... | 08/05/2008 |
| 7403156 | Method and system for performing digital beam forming at intermediate frequency on the radiation pattern of an array antenna A method of performing digital beam forming on the radiation pattern of an array antenna using a plurality of antenna elements, each antenna element being coupled to a signal processing chain. A weighting phase is used in which at least a complex weight coefficient ... | 07/22/2008 |
| 7400297 | Method for the blind wideband localization of one or more transmitters from a carrier that is passing by A method for localizing one or more sources, the source or sources being in motion relative to a network of sensors, comprises a step for the separation of the sources in order to identify the direction vectors associated with the response of the sensors to a source... | 07/15/2008 |
| 7397426 | Signal separation for a CDMA communications device and associated methods A method for operating a CDMA communications device includes receiving at an antenna array M different summations from a mixture of source signals provided by M signal sources, and providing the M different summations to a receiver assembly. The receiver assembly in... | 07/08/2008 |
| 7362269 | Undulating transmit patterns to support signal separation at a receiver A communications system includes a fixed transmitter and a mobile wireless communications device. The fixed transmitter transmits a source signal defined by a character set made up of symbols. At least one of the symbols in the character set is transmitted at a diff... | 04/22/2008 |
| 7362816 | Inversion of channel distortion by adaptive wavelet lifting A method for inverting telecommunication channel distortion by adaptive wavelet lifting. The distortion signal is analyzed using wavelet lifting and the inverse filter is computed. Coefficients of the inverse filter are used to either compute a transmission pre-filt... | 04/22/2008 |
| 7362267 | Smart antenna, method and apparatus for adaptive beam forming A beam forming method for a smart antenna and smart antennas configured to employ the method, in which pre-multibeam processing and time delay aligning are implemented to array signals, and then a suboptimum weight is calculated by means of a pilot frequency symbol,... | 04/22/2008 |
| 7352721 | Beam forming apparatus and method for an array antenna system A joint channel and Direction of Arrival (DOA) estimation apparatus and method simplified to efficiently estimate a channel impulse response associated with a spatially selective transmission channel occurring in a mobile radio channel are provided. To uniformly pro... | 04/01/2008 |
| 7348923 | Signal separation based on a hybrid separation matrix and antenna arrays A method for operating a communications device for separating M source signals provided by M signal sources includes receiving at K antenna arrays M different summations of the M source signals, where K | 03/25/2008 |
| 7342535 | Beam-forming apparatus and method using a spatial interpolation based on regular spatial sampling A beam-forming apparatus and method for improving system performance using a spatial interpolation and at least one Angle of Arrival (AoA) in a system based on regular spatial sampling is provided. The AoA is estimated using a carrier-to-interference ratio. Beam-for... | 03/11/2008 |
| 7336727 | Generalized m-rank beamformers for MIMO systems using successive quantization The telecommunications system described herein implements a multi-rank beamformer for use in wireless systems equipped with multiple transmit and multiple receive antennas. The multi-rank beamformer uses finite-rate feedback of channel conditions to achieves close t... | 02/26/2008 |
| 7330701 | Low complexity beamformers for multiple transmit and receive antennas Beamforming systems having a few bits of channel state information fed back to the transmitter benefit from low complexity decoding structures and performances gains compared with systems that do not have channel state feedback. Both unit rank and higher rank system... | 02/12/2008 |
| 7330801 | Signal separation using rank deficient matrices A communications device includes an antenna array for receiving different summations of source signals from a plurality of signal sources, a receiver coupled to the antenna array for receiving the different summations of source signals, and a signal separation proce... | 02/12/2008 |
| 7327780 | Wireless communications systems and methods for multiple operating system multiple user detection The invention provides methods and apparatus for multiple user detection (MUD) processing that have application, for example, in improving the capacity CDMA and other wireless base stations. One aspect of the invention provides a multiprocessor, multiuser detection ... | 02/05/2008 |
| 7324794 | Phase combining diversity Embodiments of methods of receiving transmitted signals are disclosed. The methods include a first antenna receiving a second signal, a second antenna receiving a second signal, adjusting a phase relationship between the first signal and the second signal, combining... | 01/29/2008 |
| 7312750 | Adaptive beam-forming system using hierarchical weight banks for antenna array in wireless communication system An adaptive beam-forming system using hierarchical weight banks for antenna arrays in wireless communication systems is disclosed. The present invention can be applied for both reception and transmission beam-forming. The hierarchical weight banks contain weights th... | 12/25/2007 |
