Pulse or digital communications – Spread spectrum – Direct sequence
Reissue Patent
2011-03-15
2011-03-15
Ghebretinsae, Temesghen (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S143000, C375S144000, C375S347000, C375S267000
Reissue Patent
active
RE042219
ABSTRACT:
A system and method for transmitting a plurality of spread-spectrum signals over a communications channel having fading. The plurality of spread-spectrum signals are radiated by a plurality of antennas, with each antenna preferably spaced by one-quarter wavelength. A plurality of receiver antennas receive the plurality of spread-spectrum signals and a plurality of fading spread-spectrum signals. Each receiver antenna is coupled to a plurality of matched filters having a respective plurality of impulse responses matched to the chip-sequence signals of the plurality of spread-spectrum signals. A RAKE and space-diversity combiner combines, for each respective chip-sequence signal, a respective plurality of detected spread-spectrum signals and a respective multiplicity of detected-multipath-spread-spectrum signals, to generate a plurality of combined signals. The symbol amplitudes can be measured and erasure decoding employed to improve performance.
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Ghebretinsae Temesghen
Linex Technologies Inc.
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