Multi-user detection in OFDM systems using CDMA and multiple antennas

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Multi-user detection in OFDM systems using CDMA and multiple antennas

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5th European Personal Mobile Communications Conference 2003 — Recommend this title to your library

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  • DOI:  10.1049/cp:20030230
  • ISBN: 0 85296 753 5
  • Location: Glasgow, UK
  • Conference date: 22-25 April 2003
  • Format: PDF
In this paper multiuser detection in OFDM systems is examined. The separation of concurrently transmitted signals is based on space division and code division multiple access (SD/CDMA). The achievable bit error ratio and the peak to average power ratio (PAPR) are evaluated for different spreading strategies. A novel time domain spreading technique for OFDM systems is proposed for which the PAPR is independent of the processing gain. The examined OFDM techniques are compared with single-carrier transmission using equalization in the frequency domain (SC/FDE), which shows strong similarities to OFDM systems.

Inspec keywords: mobile radio; code division multiple access; spread spectrum communication; multiuser detection; error statistics; time-domain analysis; OFDM modulation; space division multiple access

Subjects: Modulation and coding methods; Signal detection; Mobile radio systems; Multiple access communication

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