Frequency-domain channel estimation using FFT/IFFT for DS-CDMA mobile radio

Shinsuke Takaoka, Fumiyuki Adachi

Research output: Contribution to journalConference articlepeer-review

5 Citations (Scopus)


Coherent rake reception of direct sequence code division multiple access (DS-CDMA) signals requires accurate channel estimation in a frequency-selective fading channel. This paper studies a code-multiplexed pilot-assisted frequency-domain channel estimation using FFT/IFFT, which has a good tracking capability against fast fading and can reduce the effect of noise and interpath interference (IPI). The average bit error rate (BER) performance of rake combining in a time- and frequency-selective fading channel is theoretically evaluated and confirmed by computer simulation. It is shown that the frequency-domain channel estimation using code-multiplexed pilot is very robust against fast fading.

Original languageEnglish
Pages (from-to)694-698
Number of pages5
JournalIEEE Vehicular Technology Conference
Issue number1
Publication statusPublished - 2004 Dec 1
Event2004 IEEE 60th Vehicular Technology Conference, VTC2004-Fall: Wireless Technologies for Global Security - Los Angeles, CA, United States
Duration: 2004 Sep 262004 Sep 29

ASJC Scopus subject areas

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


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