Open Access

Cyclostationarity-Inducing Transmission Methods for Recognition among OFDM-Based Systems

  • Koji Maeda1Email author,
  • Anass Benjebbour1,
  • Takahiro Asai1,
  • Tatsuo Furuno1 and
  • Tomoyuki Ohya1
EURASIP Journal on Wireless Communications and Networking20082008:586172

DOI: 10.1155/2008/586172

Received: 29 June 2007

Accepted: 18 March 2008

Published: 30 March 2008

Abstract

This paper proposes two cyclostationarity-inducing transmission methods that enable the receiver to distinguish among different systems that use a common orthogonal frequency division multiplexing- (OFDM-) based air interface. Specifically, the OFDM signal is configured before transmission such that its cyclic autocorrelation function (CAF) has peaks at certain preselected cycle frequencies. The first proposed method inserts a specific preamble where only a selected subset of subcarriers is used for transmission. The second proposed method dedicates a few subcarriers in the OFDM frame to transmit specific signals that are designed so that the whole frame exhibits cyclostationarity at preselected cycle frequencies. The detection probabilities for the proposed cyclostationarity-inducing transmission methods are evaluated based on computer simulation when optimum and suboptimum detectors are used at the receiver.

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Authors’ Affiliations

(1)
Research Laboratories, NTT DoCoMo, Inc.

Copyright

© Koji Maeda et al. 2008

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.