Iterative MMSE-FDE/MUI cancellation and antenna diversity for frequency-domain filtered SC-FDMA uplink

Suguru Okuyama, Kazuki Takeda, Fumiyuki Adachi

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Broadband single-carrier frequency division multiple access (SC-FDMA) uplink using frequency-domain square-root Nyquist filtering is considered. The peak-to-average power ratio (PAPR) of filtered SC signals can be reduced by increasing the filter roll-off factor á. Furthermore, an additional frequency diversity gain can be obtained by making use of the excess bandwidth introduced by the transmit root Nyquist filtering. However, if the carrier-frequency separation is kept the same as in the case of α = 0, the adjacent users' signal spectra overlap with the desired users' spectrum and the multiuser interference (MUI) is produced. In this paper, we propose two frequency-domain iterative MUI cancellation schemes which can achieve the frequency diversity gain through spectrum combining. The achievable bit error rate (BER) and throughput performances are evaluated by computer simulation.

Original languageEnglish
Pages (from-to)2847-2856
Number of pages10
JournalIEICE Transactions on Communications
VolumeE94-B
Issue number10
DOIs
Publication statusPublished - 2011 Oct
Externally publishedYes

Keywords

  • Frequency-domain filter
  • MMSE-FDE
  • MUI cancellation
  • SC-FDMA

ASJC Scopus subject areas

  • Software
  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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