New algorithms for constructing quasi-optimal subfamilies of GMW sequences for the applications in finite CDMA systems

Author

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

Author_Institution

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

Volume

2

fYear

1996

fDate

22-25 Sep 1996

Firstpage

672

Abstract

GMW sequence possesses desirable 2-valued auto-correlation functions however with less well controlled cross-correlation functions. This paper studies several algorithms for constructing those quasi-optimal sub-families in terms of minimized bit error rate under co-channel interference. Performance of resultant sub-families is very sensitive to the algorithms and sub-family sizes. A new criterion based on combinational (even plus odd) maximum cross-correlation is introduced for code selection and the resultant highest-peak-deleting and most-peak-deleting algorithms are effective

Keywords

cochannel interference; code division multiple access; codes; coding errors; correlation methods; error statistics; optimisation; sequences; 2-valued autocorrelation functions; GMW sequence; cochannel interference; code selection; combinational maximum cross-correlation; cross-correlation functions; finite CDMA systems; highest peak deleting algorithm; minimized bit error rate; most peak deleting algorithm; performance; quasioptimal subfamilies; Autocorrelation; Bit error rate; Control systems; Gold; Interference; Laboratories; Multiaccess communication; Telecommunication control;

fLanguage

English

Publisher

ieee

Conference_Titel

Spread Spectrum Techniques and Applications Proceedings, 1996., IEEE 4th International Symposium on

Conference_Location

Mainz

Print_ISBN

0-7803-3567-8

Type

conf

DOI

10.1109/ISSSTA.1996.563210

Filename

563210