Please use this identifier to cite or link to this item: http://localhost/handle/Hannan/622053
Title: Non-Data-Aided Measurement of Noise Variance for OFDM System in Frequency-Selective Channels
Authors: Bin Sheng
subject: Cyclic prefix (CP)|noise variance|orthogonal frequency division multiplexing (OFDM)
Year: 2016
Publisher: IEEE
Abstract: In this paper, we propose a non-data-aided (NDA) method to estimate the noise variance for orthogonal frequency division multiplexing (OFDM) system in frequency-selective channels. The proposed method is developed based on the signal correlation introduced by the use of the cyclic prefix (CP) and uses the difference between two discrete Fourier transform (DFT) outputs in the CP interval to estimate the noise variance. Analytical result shows that the obtained noise variance is an unbiased estimate in a quasi-static fading channel. Simulation results show that, even in the case in which the maximum delay spread is equal to the CP length and the channel is not quasi-static, the proposed method still works well.
URI: http://localhost/handle/Hannan/150103
http://localhost/handle/Hannan/622053
ISSN: 0018-9545
1939-9359
volume: 65
issue: 12
Appears in Collections:2016

Files in This Item:
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Title: Non-Data-Aided Measurement of Noise Variance for OFDM System in Frequency-Selective Channels
Authors: Bin Sheng
subject: Cyclic prefix (CP)|noise variance|orthogonal frequency division multiplexing (OFDM)
Year: 2016
Publisher: IEEE
Abstract: In this paper, we propose a non-data-aided (NDA) method to estimate the noise variance for orthogonal frequency division multiplexing (OFDM) system in frequency-selective channels. The proposed method is developed based on the signal correlation introduced by the use of the cyclic prefix (CP) and uses the difference between two discrete Fourier transform (DFT) outputs in the CP interval to estimate the noise variance. Analytical result shows that the obtained noise variance is an unbiased estimate in a quasi-static fading channel. Simulation results show that, even in the case in which the maximum delay spread is equal to the CP length and the channel is not quasi-static, the proposed method still works well.
URI: http://localhost/handle/Hannan/150103
http://localhost/handle/Hannan/622053
ISSN: 0018-9545
1939-9359
volume: 65
issue: 12
Appears in Collections:2016

Files in This Item:
File Description SizeFormat 
7446357.pdf380.13 kBAdobe PDFThumbnail
Preview File
Title: Non-Data-Aided Measurement of Noise Variance for OFDM System in Frequency-Selective Channels
Authors: Bin Sheng
subject: Cyclic prefix (CP)|noise variance|orthogonal frequency division multiplexing (OFDM)
Year: 2016
Publisher: IEEE
Abstract: In this paper, we propose a non-data-aided (NDA) method to estimate the noise variance for orthogonal frequency division multiplexing (OFDM) system in frequency-selective channels. The proposed method is developed based on the signal correlation introduced by the use of the cyclic prefix (CP) and uses the difference between two discrete Fourier transform (DFT) outputs in the CP interval to estimate the noise variance. Analytical result shows that the obtained noise variance is an unbiased estimate in a quasi-static fading channel. Simulation results show that, even in the case in which the maximum delay spread is equal to the CP length and the channel is not quasi-static, the proposed method still works well.
URI: http://localhost/handle/Hannan/150103
http://localhost/handle/Hannan/622053
ISSN: 0018-9545
1939-9359
volume: 65
issue: 12
Appears in Collections:2016

Files in This Item:
File Description SizeFormat 
7446357.pdf380.13 kBAdobe PDFThumbnail
Preview File