DocumentCode :
392171
Title :
A rate-one non-orthogonal space-time coded OFDM system with estimation for frequency selective channels
Author :
Shao, Lei ; Roy, Sumit
Author_Institution :
Dept. of Electr. Eng., Univ. of Washington, Seattle, WA, USA
Volume :
1
fYear :
2002
fDate :
17-21 Nov. 2002
Firstpage :
676
Abstract :
In this paper, we investigate the impact of applying the channel estimation method in [1] to an OFDM system equipped with rate 1 nonorthogonal space time block code for K transmit and 1 receive antennas. A new training pattern based on the Hadamard construction is designed that enables estimation of the K channels separately and thus reduces the effective noise variance in the estimate. The simulation result shows that using this low rank channel estimation in frequency selective slow fading channels yields very good BER performance comparable to the case when channel is known at the receiver. Moreover, the use of rate 1 non-orthogonal STBC achieves significantly superior performance vis-a-vis Alamouti´s orthogonal STBC.
Keywords :
3G mobile communication; Hadamard codes; OFDM modulation; block codes; channel estimation; error statistics; fading channels; receiving antennas; space-time codes; transmitting antennas; BER performance; Hadamard construction; STBC; channel estimation; effective noise variance; frequency selective slow fading channels; rate-one nonorthogonal system; receive antennas; space time block code; space-time coded OFDM system; training pattern; transmit antennas; Block codes; Channel estimation; Fading; Frequency estimation; MIMO; Noise reduction; OFDM; Receiving antennas; Transmitting antennas; Wireless LAN;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Global Telecommunications Conference, 2002. GLOBECOM '02. IEEE
Print_ISBN :
0-7803-7632-3
Type :
conf
DOI :
10.1109/GLOCOM.2002.1188164
Filename :
1188164
Link To Document :
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