Title :
Improved Frequency Domain SNR Estimator Using DCT in Mobile Fading Channels
Author :
Kim, Sungtae ; Park, Goohyun ; Yu, Takki ; Yu, Hyunkyu ; Lee, JaeGu ; Hong, Daesik
Author_Institution :
Dept. of Electr. & Electron. Eng., Yonsei Univ., Seoul
Abstract :
Signal-to-noise ratio (SNR) measurement is required in many channel-adaptive techniques and radio resource management methods for mobile radio communication systems. In this paper, the factors that degrade the MSE performance of the conventional frequency domain SNR estimator in high SNR region are analyzed. Based on this analysis, we propose two improved frequency domain SNR estimators which employ windowing and discrete cosine transform (DCT) to suppress the leakage of the received fading signal´s frequency spectrum. The simulation results show that the proposed methods remarkably improve the MSE performance for high SNR region (ges15 dB) in mobile fading channels
Keywords :
discrete cosine transforms; fading channels; frequency-domain analysis; mobility management (mobile radio); DCT; channel-adaptive techniques; discrete cosine transform; frequency domain SNR estimator; mobile fading channels; mobile radio communication systems; radio resource management methods; signal-to-noise ratio; Degradation; Discrete cosine transforms; Fading; Frequency domain analysis; Frequency estimation; Land mobile radio; Performance analysis; Resource management; Signal analysis; Signal to noise ratio;
Conference_Titel :
Vehicular Technology Conference, 2006. VTC 2006-Spring. IEEE 63rd
Conference_Location :
Melbourne, Vic.
Print_ISBN :
0-7803-9391-0
Electronic_ISBN :
1550-2252
DOI :
10.1109/VETECS.2006.1683177
