Title :
Channel estimation with wavelet de-noising for OFDM system in mobile environment
Author :
Lee, Dong Heon ; Kim, Suk Chan ; Park, Jin Woo ; Park, Seong Lai
Author_Institution :
Dept. of Electr. Eng., Pusan Nat. Univ., Busan
Abstract :
In this paper, we propose a channel estimation method which uses piecewise linear interpolation with wavelet de-noising to reduce additive white Gaussian noise (AWGN) and intercarrier interference (ICI) for orthogonal frequency division multiplexing (OFDM) mobile communication systems. The performance including mean squared error (MSE) and bit error rate (BER) of the proposed channel estimator is compared with conventional methods. Computer simulations in mobile environment demonstrate that the proposed channel estimation method exhibit an improved performance.
Keywords :
AWGN; OFDM modulation; channel estimation; error statistics; intercarrier interference; interpolation; mean square error methods; mobile radio; piecewise linear techniques; signal denoising; wavelet transforms; AWGN reduction; BER; MSE; OFDM system; additive white Gaussian noise; bit error rate; channel estimation; intercarrier interference; mean squared error; mobile communication systems; mobile environment; orthogonal frequency division multiplexing; piecewise linear interpolation; wavelet denoising; AWGN; Additive white noise; Bit error rate; Channel estimation; Interference; Interpolation; Mobile communication; Noise reduction; OFDM; Piecewise linear techniques;
Conference_Titel :
Military Communications Conference, 2008. MILCOM 2008. IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4244-2676-8
Electronic_ISBN :
978-1-4244-2677-5
DOI :
10.1109/MILCOM.2008.4753289
