Adaptive MMSE Multiuser Detection (A-MMSE-MUD) in Asynchronous Cooperative CDMA Networks

Research output: Contribution to Book/ReportConference Contributionpeer-review

Abstract

Asynchronous cooperative CDMA wireless network uplink transmission is examined in this paper, where users cooperate in a relaying mode while they exchange data and channel information with the base station to achieve diversity gains. MAI occurs at both the relays and destination due to asynchronous transmission and non orthogonality of spreading waveform. In order to deal MAI, A-MMSE-MUD is been used by bank of linear adaptive filters. Two protocols of cooperative communication wireless networks are used, (i) amplify and forward at relays and A-MMSE-MUD at destination, (ii) A-MMSE-MUD at the relays and destination in a decode and forward operation. We compared our result with other multiuser detection schemes under same conditions in a cooperative communication wireless network and found that the amplify and forward scheme in use of A-MMSE-MUD remove the MAI even amplification is been performed on the relays nodes. Where as decode and forward scheme outperform all other multiuser detection scheme. Simulation experiments shows both schemes amplify and forward and decode and forward with A-MMSE-MUD provide significant improvement in the bit error rate and capacity performance of the cooperative communication CDMA networks.
Original languageEnglish
Title of host publicationSoftCOM 2010, 18th International Conference on Software, Telecommunications and Computer Networks
PublisherIEEE
Pages260 - 264
Number of pages5
ISBN (Print)9781424486632
Publication statusPublished - 23 Sep 2010
EventSoftCOM 2010 : 18th International Conference on Software, Telecommunications and Computer Networks - (SoftCOM 2010) - Split, Croatia
Duration: 23 Sep 201025 Sep 2010

Conference

ConferenceSoftCOM 2010 : 18th International Conference on Software, Telecommunications and Computer Networks - (SoftCOM 2010)
CountryCroatia
CitySplit
Period23/09/1025/09/10

Keywords

  • Computing
  • Asynchronous cooperative CDMA wireless network
  • CDMA
  • Wireless
  • Wireless networks

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