Pulse or digital communications – Spread spectrum
Patent
1997-12-16
2000-10-17
Chin, Stephen
Pulse or digital communications
Spread spectrum
375150, 375152, 375355, 370335, H04R 1500
Patent
active
061342602
ABSTRACT:
Systems and methods for frequency acquisition and channel tracking in a direct sequence code division multiple access system are described. Frequency estimates are prepared and refined, which estimates are also used in the channel tracking process.
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Urs Fawer, A Coherent Spread-Spectrum Diversity-Receiver with AFC for Multipath Fading Channels, IEEE Transactions on Communications, vol. 42, No. 2/3/4 (Feb., Mar., Apr. 1994), pp. 1300-1311.
Oliver C. Mauss et al., "Carrier Frequency Recovery for a Fully Digital Direct-Sequence Spread-Spectrum Receiver: A Comparison", Aachen. Univ. of Tech., IEEE (1993), pp. 392-395.
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Bottomley Gregory E.
Chennakeshu Sandeep
Molnar Karl J.
Toy Raymond L.
Chin Stephen
Ericsson Inc.
Liu Shuwang
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