Receiver for a spread spectrum system

Details Receiver for a spread spectrum system Receiver for a spread spectrum system

2006-06-27

2006-06-27

Tran, Khai (Department: 2637)

Pulse or digital communications

Spread spectrum

Direct sequence

C375S147000

Reexamination Certificate

active

07068710

ABSTRACT:
A method for operation of a receiver of a spread spectrum system. The method includes generating in the receiver an expected signal, the expected signal being a function of time and frequency correlating the received time and frequency of the received signal with time and frequency shifted parameters of the expected signal deriving a computational expression indicative of the value of the correlation at a point displaced in time by the time offset plus the time shift and displaced in frequency by the frequency offset plus the frequency shift, and comparing the correlation measure with the computational expression to determine the time offset and the frequency offset.

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patent: 6101222 (2000-08-01), Dorricott
patent: 6151363 (2000-11-01), Burl et al.
patent: 6181911 (2001-01-01), Sih et al.
patent: 6483885 (2002-11-01), Bradley et al.
patent: 6947474 (2005-09-01), Kober et al.
“Synchronizing a Digital GPS Receiver” Melecon '96 8th. Mediterranean Electrotechnical Conference vol. II pp. 1043-1046.
“Signal Synchronization for Direct-Sequence Code-Division Multiple Access Radio Modems” vol. 9. No. 1 Jan.-Feb. 1998.
“An Efficient Timing Synchronization Technique for FFT Based Multi-Carrier Direct Sequence Spread Spectrum Transceiver”by Hong et al. 1998 IEEE. pp. 713-717.

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