| Patent application number | Description | Published |
|---|
| 20090067539 | Wireless Personal Area Network Communication Systems, Apparatus and Methods with Fast Adaptive Beamforming - An embodiment of the present invention provides a method for communicating in a wireless personal area network, comprising using adaptive beamforming configured for a low-rate mode for reliable low-rate communications and a high-rate mode for high-rate communications and using a fast algorithm to perform antenna beamforming for the high rate mode, wherein the fast algorithm includes training performed on a block-by-block basis with decision feedback from a receiver (RX) to a transmitter (TX) about the usefulness of further training stages. | 03-12-2009 |
| 20090073954 | Techniques for Wireless Personal Area Network Communications with Efficient Spatial Reuse - An embodiment of the present invention provides a method for communicating in a wireless personal area network (WPAN), comprising using Spatial Division Multiple Access (SDMA) in said WPAN network by exploiting directional antennas. | 03-19-2009 |
| 20090121936 | Adaptive antenna beamforming - Adaptive antenna beamforming may involve a maximum signal-to-noise ratio beamforming method, a correlation matrix based beamforming method, or a maximum ray beamforming method. The adaptive antenna beamforming may be used in a millimeter-wave wireless personal area network in one embodiment. | 05-14-2009 |
| 20090122744 | Selective relaying for wireless networks - A relay may partially decode a frame to get enough information to know when to amplify and transmit the frame to a user. By limiting transmission in this way, less interference may be generated in some cases. By using only limited decoding, the relay overhead may be reduced in some embodiments. | 05-14-2009 |
| 20090124199 | TECHNIQUES FOR WIRELESS PERSONAL AREA NETWORK COMMUNICATIONS WITH EFFICIENT SPATIAL REUSE - An embodiment of the present invention provides an apparatus, comprising at least one transceiver operable in a wireless personal area network (WPAN), wherein said at least one transceiver is equipped with the directional antennas adapted to point substantially vertically towards a horizontal reflecting surface, such as a ceiling, and with an antenna pattern specifically designed to control the interference levels. | 05-14-2009 |
| 20090129257 | SYSTEM AND METHOD FOR COMPENSATION OF NON-LINEAR TRANSMITTER DISTORTION - A system, apparatus, method and article to provide compensation of non-linear transmitter distortion are described. The apparatus may include a receiver node ( | 05-21-2009 |
| 20090168687 | TECHNIQUES FOR OPTIMAL LOCATION AND CONFIGURATION OF INFRASTRUCTURE RELAY NODES IN WIRELESS NETWORKS - An embodiment of the present invention provides a method, comprising optimizing the location and configuration of relay stations in a wireless network that includes at least one base station and at least one relay station by taking into account at least one or more of the following: the distinct antenna heights of said at least one base station and said at least one relay station; the data dependency between said at least one relay station and said at least one base station; the service outage of said wireless network; and the network throughput of said wireless network. | 07-02-2009 |
| 20090175366 | METHOD AND SCHEME FOR SPACE-TIME CODED COCHANNEL INTERFERENCE CANCELLATION - An apparatus, system, and method for space-time cochannel interference cancellation are described. The apparatus may include a time stacking module to stack consecutive subcarrier signals for a period of time equal to several symbols and a space-time subcarrier beamformer module to perform space-time subcarrier beamforming by applying space-time beamformer weights to stacked symbols on one or more subcarriers. The space-time beamformer weights may be calculated based on spatial and time correlation properties of one or more interference signals. Other embodiments are described and claimed. | 07-09-2009 |
| 20090233549 | Techniques for MMWAVE WPAN communications with high-directional steerable antennas combining omni-directional transmissions with beamforming training - An embodiment of the present invention provides a method for communicating in a millimeter wave (MMWAVE) wireless personal area network (WPAN) system using a reliable low-rate omni-directional communications mode implemented as TX-RX space scanning using directional antennas; and using a high-rate directional communications mode with beamformed directional antennas. | 09-17-2009 |
| 20090245160 | Geographical scheduling and association procedure for wimax systems - Techniques to manage communication between a subscriber station and a base station or a relay station are disclosed. | 10-01-2009 |
| 20090257454 | OFDM TRANSMITTER WITH ADAPTIVE BIT INTERLEAVER FOR ADAPTIVE BIT LOADING AND METHOD FOR OFDM COMMUNICATIONS - A multi-antenna transmitter includes an adaptive bit interleaver for orthogonal frequency division multiplexed (OFDM) communications. The adaptive bit interleaver permutes a variable number of coded bits per OFDM symbol (Ncbps). The variable number of coded bits is calculated based on individual subcarrier modulation assignments for orthogonal subcarriers. The interleaver matrix size may be based on the variable number of coded bits per OFDM symbol and the number of subchannels. The interleaver may add padding bits to the interleaver matrix to fill any remaining positions, and after performing an interleaving operation, the interleaver may prune the padding bits to provide a sequence of interleaved bits for subsequent modulation on the orthogonal subcarriers and transmission by more than one antenna. The transmitter may transmit the OFDM symbol in accordance with an IEEE 802.16 standard. | 10-15-2009 |
| 20090310656 | COMMUNICATION SYSTEM AND TECHNIQUE USING QR DECOMPOSITION WITH A TRIANGULAR SYSTOLIC ARRAY - An apparatus, system, and method to perform QR decomposition of an input complex matrix are described. The apparatus may include a triangular systolic array to load the input complex matrix and an identity matrix, to perform a unitary complex matrix transformation requiring three rotation angles, and to produce a complex unitary matrix and an upper triangular matrix. The upper triangular matrix may include real diagonal elements. Other embodiments are described and claimed. | 12-17-2009 |
| 20100054175 | Wirless broadband systems with relay stations - In a wireless communications network using relay stations between the network controller and at least some of the subscriber stations, the total network throughput may be increased by using spatial multiplexing between the network controller and some relay stations. In networks with multiple tiers of relay stations, a relay station may dedicate some sub-channels to communicating directly with subscriber stations and dedicate other sub-channels to communicating with other downstream relay stations. | 03-04-2010 |
| 20100091894 | CHANNEL QUALITY ASSESSMENT METHOD IN OFDM(A) COMMUNICATIONS AND A CORRESPONDING SYSTEM - A method and apparatus for determining a channel quality indicator (CQI) to be used in link adaptation for Orthogonal Frequency Division Multiplexing (OFDM) communications. In one embodiment of the invention, the CQI is based on a set of capacity values for subcarrier components in a received OFDM signal. In another embodiment, a minimum value from a running average of the set of capacity values is used to determine the CQI. | 04-15-2010 |
| 20100091895 | INTERFERING BASE STATIONS RECOGNITION METHOD AND SCHEME FOR 802.16E SYSTEMS - A method and apparatus for identifying the preamble for an unknown signal received in Orthogonal Frequency Division Multiplexing (OFDM) communications. In one embodiment, the preamble is identified from a set of known preambles using a detection statistic based on a generalized likelihood ratio (GLR) method. In another embodiment, the GLR detection statistic relies on a priori assumptions about a transfer function represented by the received signal. | 04-15-2010 |
| 20100135238 | SYSTEMS FOR COMMUNICATING USING MULTIPLE FREQUENCY BANDS IN A WIRELESS NETWORK - Communication signals using a first and a second frequency band in a wireless network is described herein. The first frequency band may be associated with a first beamwidth while the second frequency band may be associated with a second beamwidth. A method includes transmitting, in a first frequency band by a coordinating device, an indication of a first time resource and/or first frequency resource for a communication device to identify one or more neighbor communication devices that are capable of communicating over a second frequency band, receiving, in the first frequency band by the coordinating device, link availability information for the second frequency band based at least in part on the one or more neighbor communication devices identified as being capable of communicating over the second frequency band, and transmitting, in the first frequency band, a transmission schedule to indicate to the communication device a second time resource and/or second frequency resource in which the communication device can communicate with at least one of the one or more neighbor communications devices over the second frequency band, the transmission schedule being based at least in part on the received link availability information. Other embodiments may be described and/or claimed. | 06-03-2010 |
| 20110018767 | ADAPTIVE ANTENNA BEAMFORMING - Adaptive antenna beamforming may involve a maximum signal-to-noise ratio beamforming method, a correlation matrix based beamforming method, or a maximum ray beamforming method. The adaptive antenna beamforming may be used in a millimeter-wave wireless personal area network in one embodiment. | 01-27-2011 |
| 20110110338 | LOCATION DETERMINATION IN WIRELESS COMMUNICATION SYSTEMS - Briefly, in accordance with one or more embodiments, a mobile station receives a location beacon transmitted from multiple base stations based on a transmission plan for a predefined downlink location based services zone in the superframes of a signal frame structure. The transmission plan includes spreading transmissions of the location beacon that are unique to respective base stations. The mobile station identifies the base stations based on the respective location beacons and the transmission plan. The mobile station identifies a present location based on the location beacons and the identities of the base stations that from which the location beacons were received. | 05-12-2011 |
