Pulse or digital communications – Repeaters – Testing
Patent
1996-12-20
1999-07-27
Ghebretinsae, Temesghen
Pulse or digital communications
Repeaters
Testing
H04B 169
Patent
active
059302887
ABSTRACT:
A communication device (100) includes a plurality of receiver fingers (112, 114, 116) for receiving a spread spectrum communication signal. Each receiver finger includes a received signal strength indication (RSSI) circuit (400). The RSSI circuit (400) includes an energy calculator (406) and a filter (410, 412) for producing a filtered signal which indicates signal quality. A first comparator (414) produces a primary lock indication when the filtered signal exceeds a primary lock threshold. A second comparator (418) produces a secondary lock indication when the filtered signal exceeds a secondary lock threshold. The bandwidth of the RSSI circuit (400) can be varied between a first bandwidth for providing the primary lock indication for traffic channel decoder and a second bandwidth for providing the secondary lock indication for the power control bit decoder. This allows performance to be tailored to the individual requirements of the traffic channel decoding and the power control channel decoding.
REFERENCES:
patent: 5216692 (1993-06-01), Ling
patent: 5490165 (1996-02-01), Blakeney, II et al.
Bartusiak Paul J.
Ghebretinsae Temesghen
Motorola Inc.
Rauch John G.
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