Method and apparatus of a multi-code code division multiple acce

Details Method and apparatus of a multi-code code division multiple acce Method and apparatus of a multi-code code division multiple acce

1996-08-20

1999-02-09

Safourek, Benedict V.

Multiplex communications

Generalized orthogonal or special mathematical techniques

Particular set of orthogonal functions

370342, 375208, H04J 13021, H04B 7216

Patent

active

058703780

ABSTRACT:
A Multi-Code (MC) Code Division Multiple Access (CDMA) receiver receives N (where N.gtoreq.1) encoded signal channels over multiple air signal paths. The N signal channels are encoded using a properly chosen subset of Walsh codes based on a Walsh-Matrix, W.sup.M, where M is a power of two. In the disclosed MC-CDMA receiver, a timing correlator means recovers the timing and control signal for the N signal channels received over any particular signal path; a FWHT circuit together with a second correlator means decodes all of the N signal channels.

REFERENCES:
patent: 5237586 (1993-08-01), Bottomley
patent: 5497395 (1996-03-01), Jou
patent: 5550811 (1996-08-01), Kaku et al.
patent: 5577025 (1996-11-01), Skinner et al.
patent: 5602833 (1997-02-01), Zehavi

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