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Low bias frequency domain snr estimator using dct in mobile fading channels.
| Content Provider | CiteSeerX |
|---|---|
| Author | Kim, Sungtae Yu, Hyunkyu Lee, Jemin Hong, Daesik |
| Abstract | 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. Index Terms—Signal-to-noise ratio, discrete cosine transform, mobile fading channel. I. |
| File Format | |
| Access Restriction | Open |
| Subject Keyword | Mobile Fading Channel Discrete Cosine Transform Upper Bound Dct-based Estimator New Frequency Domain Estimator Simulation Result Frequency Domain Signal-to-noise Ratio Fast Fourier Transform Maximum Doppler Frequency Information Index Term Signal-to-noise Ratio |
| Content Type | Text |
