Diversity combining

Details Diversity combining Diversity combining

1997-09-18

2000-09-19

Le, Amanda T.

Pulse or digital communications

Receivers

Angle modulation

375347, 455135, H04B 702, H04L 27156

Patent

active

061223301

ABSTRACT:
A radio receiver receives a plurality of 4-ary FSK signal replicas and detects a four-level detected signal from each 4-FSK signal replica. The four-level detected signal is sampled by an AD converter. When a first signal replica is received before a second signal replica, a first distance between a first sample value and an input center level of the AD converter and a second distance between a second sample value and the input center level are calculated. The first sample value corresponds to the first sample value in the first and second signal replicas, respectively. One of the first sample value and the second sample value is selected depending on which one of the first and second distances is larger than the other.

REFERENCES:
patent: 5844952 (1998-12-01), Ito et al.
patent: 5937005 (1999-08-01), Obuchi et al.

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