New linear phase orthogonal binary codes for spread spectrum multicarrier communications

Radha Poluri, Ali N. Akansu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

Walsh codes are perfectly orthogonal binary (antipodal) block codes that found many popular applications over several decades including synchronous multicarrier communications. It is well known that they perform poorly for asynchronous multiuser communications. Therefore, the Gold codes with their superior performance are the preferred user codes in asynchronous CDMA communications. In this paper, new sets of binary orthogonal and near orthogonal user codes are searched in the binary sample space and introduced for asynchronous spread spectrum multicarrier communications. It is shown that the proposed binary user code family outperforms the Walsh codes significantly and they match in performance with the popular, nearly orthogonal Gold codes closely for asynchronous multiuser communications in AWGN channels. On the other hand, we also observed that all the binary codes considered in this study performed comparable for Rayleigh flat fading channels except the inferior performance of Gold codes in synchronous case with high SNR. We present that there are a number of such new binary code sets with different lengths available in the binary sample space. They might help us to improve the multicarrier performance of future communications systems.

Original languageEnglish (US)
Title of host publication2006 IEEE 64th Vehicular Technology Conference, VTC-2006 Fall
Pages1507-1511
Number of pages5
DOIs
StatePublished - Dec 1 2006
Event2006 IEEE 64th Vehicular Technology Conference, VTC-2006 Fall - Montreal, QC, Canada
Duration: Sep 25 2006Sep 28 2006

Publication series

NameIEEE Vehicular Technology Conference
ISSN (Print)1550-2252

Other

Other2006 IEEE 64th Vehicular Technology Conference, VTC-2006 Fall
CountryCanada
CityMontreal, QC
Period9/25/069/28/06

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics

Fingerprint Dive into the research topics of 'New linear phase orthogonal binary codes for spread spectrum multicarrier communications'. Together they form a unique fingerprint.

Cite this