SOVA equalization for multi-code CDMA system with low spreading factor

Junhui Zhao, Sanghoon Lee, Dongming Wang, Xiaohu You

Research output: Contribution to conferencePaper

Abstract

In CDMA system, the RAKE receiver is commonly used to attain diversity gain by taking advantage of the good correlation properties of the spreading codes. However, at low spreading gains the good correlation properties of the spreading codes are lost and the RAKE receiver performance is severely degraded by interpath interference (IPI). In case of multi-code CDMA system, there are exist multi-code interference (MCI). In order to suppress MPI and MCI, a novel receiver based on soft-output viterbi algorithm (SOVA) equalization is proposed in this paper. The SOVA equalization is applied to symbol sequences after RAKE combining and MCI cancellation to effectively eliminate the IPI during transmission of high rate data in wideband DS-CDMA systems. Simulation results show that the proposed receiver significantly outperform the traditional RAKE and RAKE-VA receivers.

Original languageEnglish
Pages2565-2569
Number of pages5
Publication statusPublished - 2004
Event2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2004 - Barcelona, Spain
Duration: 2004 Sep 52004 Sep 8

Other

Other2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2004
CountrySpain
CityBarcelona
Period04/9/504/9/8

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'SOVA equalization for multi-code CDMA system with low spreading factor'. Together they form a unique fingerprint.

Cite this