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Akkarakaran
Sony Akkarakaran, San Diego, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20090286497 | ESTIMATION OF DATA-TO-PILOT RATIO IN A WIRELESS COMMUNICATION SYSTEM - Techniques for estimating data-to-pilot ratio are described. A terminal may receive pilot sent to multiple terminals and may receive data sent specifically to the terminal. The terminal may estimate channel gain and noise variance based on the received pilot. The terminal may then estimate a data-to-pilot ratio based on the received data y and the estimated channel gain h and noise variance σ | 11-19-2009 |
Sony J. Akkarakaran, Poway, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20100330946 | ENHANCED INTERFERENCE NULLING EQUALIZATION - Systems and methodologies are described that facilitate combining received signals from multiple receive antennas in a wireless communication environment. The received signals from the multiple receive antennas can be weighted utilizing an adaptive combination of maximal ratio combining (MRC) and interference nulling. The combination of MRC and interference nulling can be controlled based upon one or more configurable parameters. For instance, a covariance matrix can be modified to include the one or more configurable parameters, and the modified covariance matrix can be utilized in connection with interference nulling. Further, respective values for the one or more configurable parameters can be selected as a function of at least one input (e.g., measured interference-over-thermal (IoT) value, received loading level indicator, eigenvalue distribution of a covariance matrix, . . . ) related to noise correlation. | 12-30-2010 |
Sony John Akkarakaran, San Diego, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20080235552 | PACKET-ASYNCHRONOUS HYBRID-ARQ - Aspects described a low receiver complexity approach for reliable packet decoding when Hybrid ARQ protocol is employed with persistent assignment and potentially an erasure sequence transmission. Multiple hypotheses packet decoding performance is achieved while mitigating multiple hypotheses receiver complexity. A reference number is utilized to perform hypotheses. The reference number is independent of a start of packet. A sequence of reference numbers can be utilized, which may not necessarily be sequential numbers. The reference numbers are pre-defined. | 09-25-2008 |
| 20090161606 | METHOD AND APPARATUS FOR IMPROVING PERFORMANCE OF ERASURE SEQUENCE DETECTION - Attributes of access terminals are employed in determining durations for erasure sequences. Transmissions from access terminals are analyzed to determine different attributes are based at least ont these attributes traffic models are estimated. Those terminals whose traffic models tend towards more frequent occurrences of longer erasures are assigned longer erasure durations to improve performance in erasure sequence detection. | 06-25-2009 |
| 20110122838 | Configurable Pilots in a Wireless Communication System - Techniques for transmitting configurable pilots in a wireless communication system are described. The placement of pilots is determined based on an assignment of resources for transmission. Different placements of pilots are used for different assignments of resources. The assignment may be for one or more frames and/or one or more H-ARQ interlaces. The placement of pilot(s) in each frame or H-ARQ interlace may be determined based on the placement of pilot(s) in prior frame(s) or H-ARQ interlace(s). Pilots are sent at time and frequency locations determined by the placement of the pilots. Each pilot may be sent on one or more subcarriers in one or more symbol periods. The pilots may be TDM pilots and/or some other type of pilot. The pilots may be sent using IFDMA, LFDMA, EFDMA, OFDMA, or some other multiplexing scheme. | 05-26-2011 |