Spread spectrum PR-QMF transmultiplexer codes for CDMA communications

Author

Akansu, Ali N. ; Lin, Xueming ; Tazebay, M.V.

Author_Institution

Dept. of Electr. & Comput. Eng., New Jersey Inst. of Technol., Newark, NJ, USA

fYear

1996

Firstpage

109

Lastpage

112

Abstract

Orthogonal transmultiplexers have been successfully utilized for multiple access communications. They are of FDMA type in their most common version. The frequency selective PR-QMFs were used in transmultiplexers for CDMA communications reported in the literature. This conflicts with the fundamentals of CDMA theory. We introduce novel spread spectrum PR-QMF codes. It is shown that the spread spectrum PR-QMF codes with minimized auto- and cross-correlation properties drastically outperform the conventional Gold (1967) codes in CDMA communication scenarios considered

Keywords

band-pass filters; code division multiple access; codes; correlation methods; filtering theory; quadrature mirror filters; signal reconstruction; spread spectrum communication; transmultiplexing; CDMA communications; FDMA; Gold codes; autocorrelation properties; cross-correlation properties; frequency selective PR-QMF; multiple access communications; orthogonal transmultiplexers; perfect reconstruction filter banks; spread spectrum PR-QMF transmultiplexer codes; Bit error rate; Frequency conversion; Frequency division multiaccess; Frequency domain analysis; Gold; Multiaccess communication; Multiple access interference; OFDM modulation; Signal processing; Spread spectrum communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Digital Signal Processing Workshop Proceedings, 1996., IEEE

Conference_Location

Loen

Print_ISBN

0-7803-3629-1

Type

conf

DOI

10.1109/DSPWS.1996.555472

Filename

555472