Frequency-domain iterative parallel interference cancellation for multicode DS-CDMA-MIMO multiplexing

Akinori Nakajima, Garg Deepshikha, Fumiyuki Adachi

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

5 Citations (Scopus)


In a multicode DS-CDMA transmission, high-speed data rate can be achieved by using orthogonal code multiplexing while retaining the multi access capability. For further increase of the transmission data rate, the use of multi-input multi-output (MIMO) multiplexing is very effective. However, channels become severely frequency-selective, as a result, the performance is severely degraded in a frequency-selective fading channel due to orthogonality distortion among spreading codes. Recently, we proposed an iterative parallel interference cancellation (PIC) for SC-MIMO multiplexing in a frequency-selective fading channel. In this paper, we apply the frequency-domain iterative PIC to multicode DS-CDMA MIMO multiplexing in a frequencyselective fading channel and investigate, by the computer simulation, the impact of spreading factor and channel frequency-selectivity on the achievable bit error rate (BER) performance. Packet access will be the core technology of the next generation mobile communications systems. As an efficient error control technique, rate compatible punctured turbo coded hybrid automatic repeat request (RCPT-HARQ) is well known. We also evaluate, by computer simulation, the throughput performance of RCPT-HARQ in a frequency-selective Rayleigh fading channel.

Original languageEnglish
Title of host publicationVTC 2005-Fall
Subtitle of host publicationMid Way Through the Decade - Technology Past, Present and Future
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages5
ISBN (Electronic)0780391527
Publication statusPublished - 2005
Externally publishedYes
Event62nd Vehicular Technology Conference, VTC 2005 - Dallas, United States
Duration: 2005 Sep 252005 Sep 28

Publication series

NameIEEE Vehicular Technology Conference
ISSN (Print)1550-2252


Other62nd Vehicular Technology Conference, VTC 2005
Country/TerritoryUnited States


  • Iterative PIC
  • MIMO multiplexing
  • Mobile communication
  • Multicode DS-CDMA
  • Turbo coded Hybrid ARQ

ASJC Scopus subject areas

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


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