Title :
Cyclic-prefix based noise variance and power delay profile estimation for OFDM systems
Author :
Cui, Tao ; Tellambura, Chintha
Author_Institution :
Dept. of Electr. & Comput. Eng., Alberta Univ., Edmonton, Alta., Canada
Abstract :
In this paper, we derive cyclic-prefix (CP) based parameter estimators for orthogonal frequency division multiplexing (OFDM) systems. Signal correlation due to the use of the CP is exploited without requiring additional pilot symbols. Noise variance, power delay profile, the number of paths and the signal to noise ratio are estimated. The proposed algorithms can be readily used for applications such as minimum mean-square error (MMSE) equalization.
Keywords :
OFDM modulation; channel estimation; fading channels; least mean squares methods; multipath channels; MMSE equalization; OFDM systems; cyclic-prefix based noise variance; minimum mean-square error; multipath fading channels; noise variance; orthogonal frequency division multiplexing; power delay profile; power delay profile estimation; signal correlation; Delay estimation; OFDM;
Conference_Titel :
Communications, Computers and signal Processing, 2005. PACRIM. 2005 IEEE Pacific Rim Conference on
Print_ISBN :
0-7803-9195-0
DOI :
10.1109/PACRIM.2005.1517340
