Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2006-01-09
2008-10-07
Ha, Dac V (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S150000, C375S267000, C375S343000, C375S347000, C375S349000, C455S137000, C455S273000, C455S278100, C370S334000
Reexamination Certificate
active
07433384
ABSTRACT:
Method and apparatus to compute the combiner coefficients for wireless communication systems for a space-time solution. One embodiment trains the weights on a signal known a priori that is time multiplexed with other signals, such as a pilot signal in a High Data Rate, HDR, system, wherein the signal is transmitted at full power. A Minimizing Mean Square Error, MMSE, approach is applied allowing weight combining on a per path basis. The weights are calculated as a function of a noise correlation matrix and spatial signature per path. The noise correlation matrix is determined from an autocorrelation matrix of the received signal. In one embodiment, the MMSE approach is applied to a non-time gated pilot signal.
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Sindhushayana Nagabhushana
Smee John Edward
Ha Dac V
Moskowitz Larry J.
Oehling George J.
QUALCOMM Incorporated
Rouse Thomas R.
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