Title :
Blind SIMO channel estimation for CPM using the Laurent approximation
Author :
Neugebauer, Shawn P. ; Ding, Zhi
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., Davis, CA, USA
Abstract :
We demonstrate that by employing the main-pulse Laurent approximation, blind second-order-statistics-based channel identification can be performed for partial response CPM signals having modulation indices other than one-half. We use the approximation to formulate the problem in the single-input multiple-output model, permitting fractional sampling of the channel output, and we compare the estimation performance, for several multipath-distorted CPM signals, of several blind channel identification methods. Simulation results demonstrate the efficacy of existing techniques for general CPM signals and highlight the necessity of exploiting the known source statistics and pulses.
Keywords :
approximation theory; channel estimation; continuous phase modulation; multipath channels; signal sampling; blind SIMO channel estimation; blind channel identification; channel output; estimation performance; fractional sampling; main-pulse Laurent approximation; modulation indices; multipath-distorted CPM signals; partial response; second-order statistics; single-input multiple-output model; source pulses; source statistics; Approximation error; Channel estimation; Computational modeling; GSM; Linear approximation; Pulse modulation; Sampling methods; Signal processing; Statistics; Viterbi algorithm;
Conference_Titel :
Circuits and Systems, 2004. ISCAS '04. Proceedings of the 2004 International Symposium on
Print_ISBN :
0-7803-8251-X
DOI :
10.1109/ISCAS.2004.1329898