Apparatus for transmitting and receiving signal using...

Details Apparatus for transmitting and receiving signal using... Apparatus for transmitting and receiving signal using...

2007-05-08

2007-05-08

Pham, Chi (Department: 2616)

Multiplex communications

Generalized orthogonal or special mathematical techniques

Particular set of orthogonal functions

C370S328000, C370S335000, C370S342000, C455S313000

Reexamination Certificate

active

10330800

ABSTRACT:
An apparatus for transmitting and receiving a signal in Code Division Multiple Access/Orthogonal Frequency Division Multiplexing (CDMA/OFDM) system is provided. The apparatus discriminates user signals with a unique spreading code and the orthogonal codes, increases data transmission rate with the non-binary value without increasing of entire bandwidth used by the users, solves signal interference with interleaver and diversity effect of interleaving and OFDM, and maximizes transmission efficiency by varying modulation schemes depending on channel states.

REFERENCES:
patent: 5815488 (1998-09-01), Williams et al.
patent: 6771976 (2004-08-01), Koyama
patent: 6813485 (2004-11-01), Sorrells et al.
patent: 7010048 (2006-03-01), Shattil
patent: 7161895 (2007-01-01), Sudo
patent: 7164696 (2007-01-01), Sano et al.
patent: 1999-298439 (1999-10-01), None
patent: 1019990243649 (1999-11-01), None
patent: WO98/59451 (1998-12-01), None
IEICE Trans. Fundamentals. vol. E81A. No. 7, Jul. 2001.
High speed data transmission using expanded bit durations in multiple parallel coded data streams, 11 pages.
IEEE (c) 2001, Rate Maximization for Multi-Code CDMA with Optimized Signatures, pp. 1375-1379.
IEEE (c) 2001, A New Multi-code/Multi-carrier DS-CDMA System, 6 pages.
Telecommunications Review, Feb. 12, 2002, pp. 210-224.

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