Blind SNR estimation with coherent function for OFDM systems

Wen Long Chin*, Sau-Gee Chen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


In OFDM receivers, an accurate signal-to-noise ratio (SNR) estimation is desirable for all sorts of operations involved in highperformance baseband demodulation. In this work, conventional SNR estimation techniques are investigated. Next, a blind SNR estimation scheme for the phase-shift keying (PSK) signals based on the coherence function is proposed. The proposed method is non-data-aided (NDA) and hence bandwidth-efficient. Simulations confirm that the proposed method has the best performance from moderate to high SNRs both in AWGN and dispersive channels; however, the proposed method has worse performance when SNRs are low.

Original languageEnglish
Pages (from-to)3753-3756
Number of pages4
JournalIEICE Transactions on Communications
Issue number11
StatePublished - 1 Jan 2008


  • OFDM
  • SNR estimation

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