Title :
Robustness of the parametric MLSE algorithm against non-parametric channels
Author :
Chen, Jiunn-Tsair
Author_Institution :
Dept. of Electron. Eng., Nat. Taiwan Univ. of Sci. & Technol., Taipei, Taiwan
Abstract :
The parametric MLSE algorithms used to equalize the multipath wireless channels have been proposed by Chen, and Paulraj (see VTC´97, Phoenix, May, 1997). These algorithms are developed based on a parametric channel model. In this paper, we examine the robustness of these algorithms against a non-parametric channel model. We show that the parametric MLSE algorithms can perform better or at least as well, compared to those of the MLSE algorithms with the conventional MMSE channel estimation, regardless of the channel model. Simulation results further re-confirm this claim in a non-parametric channel with diffused paths, and in a parametric channel with hundreds of independent paths
Keywords :
cellular radio; direction-of-arrival estimation; equalisers; error statistics; maximum likelihood sequence estimation; multipath channels; multiuser channels; parameter estimation; time division multiple access; BER; DOA; GSM; ISI; TDMA system; diffused paths; independent paths; multipath wireless channels equalization; nonparametric channels; parametric MLSE algorithm robustness; parametric channel model; simulation results; Amplitude estimation; Bit error rate; Channel estimation; Delay estimation; Direction of arrival estimation; Finite impulse response filter; GSM; Maximum likelihood estimation; Pulse modulation; Robustness;
Conference_Titel :
Global Telecommunications Conference, 1998. GLOBECOM 1998. The Bridge to Global Integration. IEEE
Conference_Location :
Sydney,NSW
Print_ISBN :
0-7803-4984-9
DOI :
10.1109/GLOCOM.1998.775714
