High data spread spectrum transceiver and associated methods

Details High data spread spectrum transceiver and associated methods High data spread spectrum transceiver and associated methods

2008-04-08

2008-04-08

Fan, Chieh M. (Department: 2611)

Pulse or digital communications

Spread spectrum

C375S142000, C375S146000, C375S150000, C370S342000, C370S441000, C370S479000

Reissue Patent

active

10005483

ABSTRACT:
A spread spectrum radio transceiver includes a high data rate baseband processor and a radio circuit connected thereto. The baseband processor preferably includes a modulator for spread spectrum phase shift keying (PSK) modulating information for transmission via the radio circuit. The modulator may include at least one modified Walsh code function encoder for encoding information according to a modified Walsh code for substantially reducing an average DC signal component to thereby enhance overall system performance when AC-coupling the received signal through at least one analog-to-digital converter to the demodulator. The demodulator is for spread spectrum PSK demodulating information received from the radio circuit. The modulator and demodulator are each preferably operable in one of a bi-phase PSK (BPSK) mode at a first data rate and a quadrature PSK (QPSK) mode at a second data rate. These formats may also be switched on-the-fly in the demodulator. Method aspects are also disclosed.

REFERENCES:
patent: 4617553 (1986-10-01), Webster et al.
patent: 4626796 (1986-12-01), Elder
patent: 4730340 (1988-03-01), Frazier, Jr.
patent: 4813001 (1989-03-01), Sloane
patent: 5063571 (1991-11-01), Vancraeynest
patent: 5103459 (1992-04-01), Gilhousen et al.
patent: 5210770 (1993-05-01), Rice
patent: 5218619 (1993-06-01), Dent
patent: 5309474 (1994-05-01), Gilhousen et al.
patent: 5353352 (1994-10-01), Dent et al.
patent: 5361276 (1994-11-01), Subramanian
patent: 5367516 (1994-11-01), Miller
patent: 5416797 (1995-05-01), Gilhousen et al.
patent: 5471497 (1995-11-01), Zehavi
patent: 5497395 (1996-03-01), Jou
patent: 5515396 (1996-05-01), Kotzin
patent: 5535329 (1996-07-01), Hastings
patent: 5537398 (1996-07-01), Siwiak
patent: 5577025 (1996-11-01), Skinner et al.
patent: 5598154 (1997-01-01), Wilson et al.
patent: 5621752 (1997-04-01), Antonio et al.
patent: 5659573 (1997-08-01), Bruckert et al.
patent: 5682404 (1997-10-01), Miller
patent: 5790534 (1998-08-01), Kokko et al.
patent: 5809060 (1998-09-01), Cafarella
patent: 5862182 (1999-01-01), Awater et al.
patent: 6404732 (2002-06-01), van Nee
patent: 6442380 (2002-08-01), Mohindra
patent: 6452958 (2002-09-01), Van Nee
patent: 6567389 (2003-05-01), Honkasalo et al.
patent: 0 750 408 (1996-12-01), None
patent: 0 757 449 (1997-02-01), None
patent: 0 757 451 (1997-02-01), None
patent: WO 96/32784 (1996-10-01), None
C. Andren, “A Brief Tutorial on Spread Spectrum and Packet Radio-TB337.1”, Intersil, 3 pgs. May, 1996.
C. Andren et al., “CCK, the new IEEE 802.11 standard for 2.4 GHz wireless LANs”, International IC-Taipei Conference Proceedings, DATE—no earlier than 1998.
J.H. Cafarello, “Orthogonal Signalling . . . BOK and DPSK”, IFF Working Paper No. 41WP-5036, Massachusetts Institute of Technology, Lincoln Laboratory, 10 pgs., Oct. 29, 1979.
Kilgore, W. et al, “Four-Chip Set Supports High-Speed DSSS PCMCIA Applications”, RF Design, Cardiff Publishing Co, Englewood, CO, US, vol. 18, No. 10, Oct. 1, 1995, pp. 42, 45-51.
C. Andren, “A 2.4 GHz 11 MBps Baseband Processor for 802.11 Applications”, 7 pgs. May 5, 1998.
C. Andren, “High Rate DS PHY, IEEE P802.11—97/25, 17 pgs. Mar. 1997.
Harris Corporation Application Note entitled “Harris PRISM Chip Set”, No. AN9614, 3 pgs. Mar. 1996.
Harris Corporation, “PRISM 2.4 GHz Chip Set”, File No. 4063.4, 2 pgs. Oct. 1996.
Harris Corporation Tech Brief entitled “A Brief Tutorial on Spread Spectrum and Packet Radio”, No. TB337.1, 3 pgs., May, 1996.
Harris Corporation, “Direct Sequence Spread Spectrum Baseband Processor”, File No. 4064.4, 41 pgs., Oct. 1996.

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