An improved trickle-based interference cancellation scheme for CDMA systems

Pooyan Haghighat, Ali Ghrayeb

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

Abstract

In this paper, we introduce a novel approach to interference cancellation for code division multiple access (CDMA) uplink transmission. Several models combining principles of serial (SIC) and parallel (PIC) interference cancellation are discussed. The proposed scheme is derived from the analysis of these hybrid models and applies a user configuration algorithm (termed "trickle") in order to provide improved bit-error-rate (BER) performance. The algorithm utilizes an adaptive matrix to compute the required configuration to be used for the subsequent interference cancellation stage. Bit-streaming, pipelined multiuser detection is employed and channel estimates are obtained using sample pilot data known at the receiver. We demonstrate that significant performance improvements can by achieved over various hybrid schemes. An improvement over the previous trickle model is also demonstrated where processing delay is greatly reduced while maintaining similar performance.

Original languageEnglish
Title of host publicationISSPIT 2007 - 2007 IEEE International Symposium on Signal Processing and Information Technology
Pages688-693
Number of pages6
DOIs
Publication statusPublished - 1 Dec 2007
EventISSPIT 2007 - 2007 IEEE International Symposium on Signal Processing and Information Technology - Cairo, Egypt
Duration: 15 Dec 200718 Dec 2007

Publication series

NameISSPIT 2007 - 2007 IEEE International Symposium on Signal Processing and Information Technology

Other

OtherISSPIT 2007 - 2007 IEEE International Symposium on Signal Processing and Information Technology
CountryEgypt
CityCairo
Period15/12/0718/12/07

    Fingerprint

Keywords

  • CDMA
  • Interference cancellation
  • Uplink transmission

ASJC Scopus subject areas

  • Computational Theory and Mathematics
  • Computer Vision and Pattern Recognition
  • Information Systems
  • Signal Processing

Cite this

Haghighat, P., & Ghrayeb, A. (2007). An improved trickle-based interference cancellation scheme for CDMA systems. In ISSPIT 2007 - 2007 IEEE International Symposium on Signal Processing and Information Technology (pp. 688-693). [4458083] (ISSPIT 2007 - 2007 IEEE International Symposium on Signal Processing and Information Technology). https://doi.org/10.1109/ISSPIT.2007.4458083