Method and system for demodulating radio signals

Details Method and system for demodulating radio signals Method and system for demodulating radio signals

1997-12-08

2000-07-04

Chin, Stephen

Pulse or digital communications

Receivers

Particular pulse demodulator or detector

375232, 375330, 714794, 714795, H03D 100

Patent

active

060849266

ABSTRACT:
A multi-path demodulator is provided for a mobile radiotelephone that includes a maximum likelihood sequence estimator in parallel with a symbol-by-symbol detector to demodulate the received signals. In a preferred embodiment, an adaptive equalizer is used in a dual-path demodulator in parallel with a differential detector. As each frame of data is demodulated, a determination is made from channel decoder information from each path about which demodulated bit stream to use (e.g., from either the estimator or detector). The performance of the demodulator is thus optimized for both non-time-dispersive and time-dispersive radio signals.

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Application for United States Letters Patent (S/N: 08/897,309 FD: Jul. 21, 1997) Systems and Methods for Selecting An Appropriate Detection Technique in a Radio Communication System by Gregory E. Bottomley, Jyun-Cheng Chen and R. David Koilpillai; pp. 1-16, Drawing Figures 1-8.

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