Multi-antenna pre-equalization for single-carrier/TDD system

Fumiyuki Adachi, Kazuaki Takeda, Hiromichi Tomeba

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)


A severe frequency-selective fading, encountered in a broadband wireless mobile communication, significantly degrades the single-carrier (SC) signal transmission performance. In this paper, multi-antenna frequency-domain pre-equalization (called pre-FDE) is presented for spread-spectrum single-carrier (SC) systems. At a transmitter, pre-FDE with transmit power constraint is applied for each transmit antenna; no equalization function is necessary at a receiver. It is shown by computer simulation that pre-FDE transmission can provide significant improvement in the bit error rate (BER) performance in a frequency-selective Rayleigh fading channel and can achieve a BER performance close to that attainable by FDE reception. For a mobile communication system, the pre-FDE transmission for the downlink (base-to-mobile) and FDE reception for the uplink (mobile-to-base) can be implemented at a base station. This allows a simple implementation of mobile transceivers.

Original languageEnglish
Pages (from-to)452-456
Number of pages5
JournalIEEE Vehicular Technology Conference
Issue number1
Publication statusPublished - 2005
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


  • Pre-equalization
  • Single-carrier transmission
  • Spread-spectrum


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