Pulse or digital communications – Systems using alternating or pulsating current – Antinoise or distortion
Patent
1997-05-29
2000-04-25
Chin, Stephen
Pulse or digital communications
Systems using alternating or pulsating current
Antinoise or distortion
375259, 375284, 371 21, 371 381, 371 391, 370535, 455504, 455506, 455 63, 455 65, H04B 1500, H03M 1300, G06F 1100, H04J 304
Patent
active
060552778
ABSTRACT:
A communication system (10) implemented to be specifically matched to the time and spatially dependent statistics of a transmission channel (36). The communication system (10) is used for broadcasting over the channel (36) to users in a coverage region (18). The communication system (10) includes a transmitter (12) having an error correction encoder (30) and a weighted interleaver (32). The error correction encoder (30) includes a first input to receive data bits and a first output. The error correction encoder (30) expands each data bit received at said input by an encoder rate. The weighted interleaver (32) includes a second input to receive the expanded data bits and a second output. The weighted interleaver (32) has a non-uniform delay distribution between a minimum delay and a maximum delay to interleave the expanded data bits by the non-uniform delay distribution. The communication system (10) also employs a weighted link margin matched to the time and spatially dependent statistics of the transmission channel.
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Martin Donald R.
Smigla Terrence R.
Stephens Scott A.
Chin Stephen
Maddox Michael W.
TRW Docket No.
Yatsko Michael S.
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