On transmission performance of OFDM-based schemes using MMSE-FDE in a frequency-selective fading channel

Haris Gacanin, Fumiyuki Adachi

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

There has been greatly increasing interest in orthogonal frequency division multiplexing (OFDM) for broadband wireless transmission due to its robustness against multipath fading. However, OFDM signals have high peak-to-average power ratio (PAPR), and thus, a power amplifier must be operated with a large input power backoff (IBO). Recently, OFDM combined with time division multiplexing (OFDM/TDM) using minimum mean square error-frequency domain equalization (MMSE-FDE) has been presented to reduce the PAPR, while improving the bit error rate (BER) performance of conventional OFDM. In this article, by extensive computer simulation, we present a comprehensive performance comparison of OFDM-based schemes in a nonlinear and frequency-selective fading channel. We discuss about the transmission performance of OFDM-based schemes with respect to the transmit peak-power, the achievable capacity, the BER performance, and the signal bandwidth. Our results show that OFDM/TDM using MMSE-FDE achieves a lower peak-power and capacity than conventional OFDM, which means significant reduction of amplifier transmit-power backoff, but with a slight decrease in signal bandwidth occupancy.

Original languageEnglish
Article number193
JournalEurasip Journal on Wireless Communications and Networking
Volume2011
Issue number1
DOIs
Publication statusPublished - 2011 Dec 1

Keywords

  • OFDM
  • OFDM/TDM
  • amplifier power efficiency
  • bit error rate
  • capacity
  • power spectrum density

ASJC Scopus subject areas

  • Signal Processing
  • Computer Science Applications
  • Computer Networks and Communications

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