Pulse or digital communications – Receivers – Particular pulse demodulator or detector
Patent
1994-01-27
1996-11-05
Vu, Kim Yen
Pulse or digital communications
Receivers
Particular pulse demodulator or detector
375350, 375324, 455213, 455307, H03D 100, H04B 110
Patent
active
055725520
ABSTRACT:
Demodulation of a CDMA downlink signal is performed by filtering correlations of the received signal with a known signature sequence. Unlike the conventional RAKE receiver, the filtering is not necessarily a FIR filter with coefficients equal to the conjugates of channel tap estimates. Instead, the present invention filters in such a way as to maximize the output signal-to-noise ratio, accounting for the fact that part of the noise comes from the same base station as the signal, so that it is colored by the same channel as the signal.
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Bottomley Gregory E.
Dent Paul W.
Ericsson - GE Mobile Communications Inc.
Nguyen Madeleine Anh-Vinh
Vu Kim Yen
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