DocumentCode :
1748311
Title :
Space-time structure of diffused multipath channels
Author :
Wang, Yeong-Cheng ; Chen, Jiunn-Tsair
Author_Institution :
Dept. of Manage. Inf. Syst., Van-Nung Inst. of Technol., Chung-Li, Taiwan
Volume :
2
fYear :
2001
fDate :
2001
Firstpage :
387
Abstract :
In wireless communication systems with specular multipath channels, the channel structure can be used to improve the system performance.] However, the channel structure turns obscure for diffused multipath channels. We analyze the diffused multipath channels and develop a low-complexity algorithm to determine the optimal dimension of the approximated channel subspace as well as the optimal basis for the subspace, in the sense of least-square error of the channel estimates. Simulation results show that (1) the system performance is significantly improved by exploring the structure of the diffused multipath channels, (2) the performance improvement is even more significant in a severe environment where the signal to noise ratio is low
Keywords :
computational complexity; dispersive channels; least squares approximations; multipath channels; multiuser channels; parameter estimation; time division multiple access; BER; DOA; SNR; TDMA system; approximated channel subspace; channel estimates; channel structure; diffused multipath channels; dispersive channel; least-square error; low-complexity algorithm; optimal basis; optimal dimension; parametric channel estimator; signal to noise ratio; simulation results; space-time structure; system performance; wireless communication systems; Algorithm design and analysis; Delay estimation; Direction of arrival estimation; Finite impulse response filter; Parameter estimation; Signal to noise ratio; Space technology; System performance; Time division multiple access; Wireless communication;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Communications, 2001. ICC 2001. IEEE International Conference on
Conference_Location :
Helsinki
Print_ISBN :
0-7803-7097-1
Type :
conf
DOI :
10.1109/ICC.2001.936968
Filename :
936968
Link To Document :
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