Searching for quasi-optimal subfamilies of m-sequences for CDMA systems

Author

Chen, X.H. ; Lang, T. ; Oksman, J.

Author_Institution

Dept. of Electr. Eng., Nat. Univ. of Singapore, Singapore

Volume

1

fYear

1996

Firstpage

113

Abstract

This paper studies several algorithms for constructing quasi-optimal m-sequence subfamilies in terms of minimized BER under co-channel interference. The results show that the performance of resultant sub-families is sensitive to the sub-family sizes and the algorithms employed. A new criterion based on combinational (even plus odd) maximum cross-correlation for the code selection is introduced, based on which both highest-peak-deleting and most-peak-deleting algorithms are effective to construct the quasi-optimal subfamilies

Keywords

binary sequences; cochannel interference; code division multiple access; correlation methods; error statistics; pseudonoise codes; spread spectrum communication; BER; CDMA systems; co-channel interference; code selection; combinational maximum cross-correlation; highest-peak-deleting algorithm; m-sequences; most-peak-deleting algorithm; quasi-optimal subfamilies; Bit error rate; Equations; Interference; Laboratories; Linear feedback shift registers; Multiaccess communication; Noise measurement; Polynomials; Shift registers; Signal to noise ratio;

fLanguage

English

Publisher

ieee

Conference_Titel

Personal, Indoor and Mobile Radio Communications, 1996. PIMRC'96., Seventh IEEE International Symposium on

Print_ISBN

0-7803-3692-5

Type

conf

DOI

10.1109/PIMRC.1996.567527

Filename

567527