Frequency-domain Pre-equalization transmit diversity for DS-CDMA mobile radio

Hiromichi Tomeba, Kazuaki Takeda, Fumiyuki Adachi

Research output: Contribution to journalConference articlepeer-review


Recently, frequency-domain equalization has been attracting an attention for improving the single-carrier transmission (i.e. DS-CDMA) performance in a frequency-selective fading channel. In the case of uplink transmissions, the orthogonality among users' signals is lost since each user's signal goes through a different fading channel and hence, the use of frequency-domain equalization at the receiver cannot sufficiently improve the uplink transmission performance. In this paper, we propose frequency-domain pre-equalization transmit diversity (FPTD), which employs pre-equalization using multiple transmit antennas with transmit power constraint, in order to transform a frequency-selective channel seen at a base station receiver to a close-to-frequency-nonselective channel. The BER performance with proposed frequency-domain pre-equalization transmit diversity is evaluated by computer simulation.

Original languageEnglish
Pages (from-to)748-752
Number of pages5
JournalIEEE Vehicular Technology Conference
Issue number2
Publication statusPublished - 2005 Oct 17
Event2005 IEEE 61st Vehicular Technology Conference -VTC 2005 - Spring Stockholm: Paving the Path for a Wireless Future - Stockholm, Sweden
Duration: 2005 May 302005 Jun 1


  • Component
  • Frequency-domain equalization
  • Frequency-selective channel
  • Transmit-diversity

ASJC Scopus subject areas

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


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