Frequency-interleaved CDMA uplink transmission using frequency-domain equalization

Kazuaki Takeda, Fumiyuki Adachi

研究成果: Conference contribution

2 被引用数 (Scopus)

抄録

The downlink bit error rate (BER) performances of DS- and MC-CDMA in a frequency-selective fading channel can be significantly improved by the use of frequency-domain equalization (FDE) based on minimum mean square error (MMSE) criterion. However, the uplink BER performance degrades due to strong multi-user interference (MUI). In this paper, we propose frequency-interleaved CDMA using MMSE-FDE, in which the subcarrier components of each user's CDMA signal are interleaved onto wider bandwidth. Then, the frequency-interleaved CDMA signal is transformed into a time-domain signal by the inverse fast Fourier transform (IFFT). Interleaving patterns assigned to different users are orthogonal each other. The proposed scheme can avoid the MUI completely while achieving frequency diversity gain due to MMSE-FDE. It is shown by computer simulation that the use of frequency-interleaving can significantly improve the uplink BER performance in a frequency-selective Rayleigh fading channel.

本文言語English
ホスト出版物のタイトルVTC 2005-Fall
ホスト出版物のサブタイトルMid Way Through the Decade - Technology Past, Present and Future
出版社Institute of Electrical and Electronics Engineers Inc.
ページ1549-1553
ページ数5
ISBN(電子版)0780391527
DOI
出版ステータスPublished - 2005
イベント62nd Vehicular Technology Conference, VTC 2005 - Dallas, United States
継続期間: 2005 9 252005 9 28

出版物シリーズ

名前IEEE Vehicular Technology Conference
3
ISSN(印刷版)1550-2252

Other

Other62nd Vehicular Technology Conference, VTC 2005
CountryUnited States
CityDallas
Period05/9/2505/9/28

ASJC Scopus subject areas

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

フィンガープリント 「Frequency-interleaved CDMA uplink transmission using frequency-domain equalization」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル