Title: Frequency selective transmit signalweighting for multiple antenna communications systems
Application Number: 200480020711 Application Date: 2004.07.29
Publication Number: 1860693 Publication Date: 2006.11.08
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H04B1/69,H04B1/707,H04B1/713,H04L5/12,H04L23/02,H04L27/04,H04L27/12,H04L27/20,H03C1/52,H03C3/00,H03K
Applicant(s) Name: Broadcom Corp. Address:
Inventor(s) Name: Catreux Severine, Erceg Vinko, Roux Pieter, Rooyen
Attorney & Agent: cai xiaogong
Abstract:
     A system and method for generating transmit weighting values for signal weighting that may be used in various transmitter and receiver structures is disclosed herein. The weighting values are determined as a function of frequency based upon a state of a communication channel and the transmission mode of the signal. In variations, weighting of the weighted signal that is transmitted through each of a plurality of antennas is carried out with one of a corresponding plurality of transmit antenna spatial weights. In these variations, a search may be conducted over various combinations of transmit weighting values and transmit antenna spatial weights in order to find a weight combination that optimizes a performance measure such as the output signal-to-noise ratio, the output bit error rate or the output packet error rate.
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