Title :
Preamble-assisted channel estimation in OFDM-based wireless systems
Author :
Kim, Cheong-Hwan ; Ban, Dae-Seung ; Lee, Yong-Hwan
Author_Institution :
Sch. of Electr. Eng., Seoul Nat. Univ., Seoul
Abstract :
This paper considers the improvement of CSI estimation accuracy in OFDM-based wireless packet transmission systems by exploiting the preamble signal as well as the pilot signal. The CSIs respectively estimated from the received preamble and pilot signal are combined according to the channel correlation between the preamble and the pilot signaling. The combining weight is analytically determined to minimize the mean squared error. Simulation results show that the proposed scheme is quite.
Keywords :
OFDM modulation; channel estimation; mean square error methods; packet radio networks; OFDM; channel correlation; mean squared error; preamble-assisted channel estimation; wireless packet transmission systems; Base stations; Channel estimation; Computer simulation; Frequency division multiplexing; Frequency response; Interference channels; OFDM; Receiving antennas; Signal to noise ratio; Transmitting antennas;
Conference_Titel :
Radio and Wireless Symposium, 2009. RWS '09. IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4244-2698-0
Electronic_ISBN :
978-1-4244-2699-7
DOI :
10.1109/RWS.2009.4957369
