Low bias frequency domain SNR estimator using DCT in mobile fading channels

Sungtae Kim, Hyunkyu Yu, Jemin Lee, Daesik Hong

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

The authors analyze the cause of bias in a fast Fourier transform (FFT)-based frequency domain signal-to-noise ratio (SNR) estimator by deriving the upper bound of the bias. The analysis is then used to propose a new frequency domain estimator using discrete cosine transform (DCT), which has lower bias. In addition, a criterion is proposed for use when maximum Doppler frequency information is available; it is based on the derived upper bound and can be used to improve the mean squared error (MSE) performance of the proposed DCT-based estimator. Simulation results show that the proposed estimator reduces the MSE remarkably by diminishing the bias.

Original languageEnglish
Article number4786478
Pages (from-to)45-50
Number of pages6
JournalIEEE Transactions on Wireless Communications
Volume8
Issue number1
DOIs
Publication statusPublished - 2009 Jan 1

Fingerprint

Ratio Estimator
Discrete Cosine Transform
Discrete cosine transforms
Fading Channels
Fading channels
Frequency Domain
Signal to noise ratio
Estimator
Mean Squared Error
Fast Fourier transforms
Upper bound
Diminishing
Fast Fourier transform
Doppler
Simulation

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics

Cite this

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Low bias frequency domain SNR estimator using DCT in mobile fading channels. / Kim, Sungtae; Yu, Hyunkyu; Lee, Jemin; Hong, Daesik.

In: IEEE Transactions on Wireless Communications, Vol. 8, No. 1, 4786478, 01.01.2009, p. 45-50.

Research output: Contribution to journalArticle

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