Title :
Impact of multipath channel parameters on channel estimation performance in OFDM systems
Author :
Golovins, Eugene ; Ventura, Neco
Author_Institution :
Dept. of Electr. Eng., Univ. of Cape Town, Cape Town, South Africa
Abstract :
Performance of wireless OFDM systems significantly depends on channel estimation accuracy. However, it is difficult to take into account all possible scenarios as the variance of error at the output of the minimum mean square error (MMSE) estimator depends on the second-order channel statistics. In this paper, we derive the lower and the upper MSE bounds, characterising the best and the worst-case channel estimation performance, and discuss channel conditions when these bounds are attained.
Keywords :
OFDM modulation; channel estimation; mean square error methods; multipath channels; statistical analysis; minimum mean square error estimator; multipath channel; second-order channel statistic; wireless OFDM system; worst-case channel estimation; Africa; Channel estimation; Cities and towns; Error analysis; Fading; Mean square error methods; Multipath channels; OFDM; Performance analysis; Transmitters; channel impulse response; mean square error; multipath; signal-to-noise ratio;
Conference_Titel :
AFRICON, 2009. AFRICON '09.
Conference_Location :
Nairobi
Print_ISBN :
978-1-4244-3918-8
Electronic_ISBN :
978-1-4244-3919-5
DOI :
10.1109/AFRCON.2009.5308191
