Title :
Adaptive multipath equalization time delay estimation with bias-removal
Author_Institution :
Dept. of Electron. Eng., City Univ. of Hong Kong, China
Abstract :
The multipath equalization time delay estimator (METDE) provides an adaptive approach for estimating the difference in arrival times of a signal received at spatially separated sensors as well as the multipath channel characteristics. However, the parameter estimates of the METDE are biased in the presence of noise. In this paper, the METDE algorithm is improved for unbiased parameter estimation via minimizing a modified cost function. Computer simulations are included to evaluate the multipath time delay estimation performance of the proposed algorithm in noisy environments
Keywords :
adaptive signal detection; delay estimation; multipath channels; adaptive multipath equalization; arrival times; bias-removal; modified cost function; multipath channel characteristics; noisy environments; spatially separated sensors; time delay estimation; unbiased parameter estimation; Adaptive equalizers; Artificial intelligence; Costs; Degradation; Delay effects; Delay estimation; Finite impulse response filter; Propagation delay; Sampling methods; Speech;
Conference_Titel :
Circuits and Systems, 2001. ISCAS 2001. The 2001 IEEE International Symposium on
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-6685-9
DOI :
10.1109/ISCAS.2001.921017
