Title :
Steady-state analysis of the multistage CM array for correlated signals
Author :
Mathur, Amit ; Keerthi, Arvind V. ; Shynk, John J.
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., Santa Barbara, CA, USA
fDate :
Oct. 30 1995-Nov. 1 1995
Abstract :
A steady-state analysis of the multistage constant modulus (CM) array is presented for the case of correlated source signals. Using a Wiener model for the converged adaptive algorithms, it is demonstrated that because of the cascade structure, signal cross-correlation results in "phantom" sources. The resulting "leakage" in the signal cancellers between stages causes an increase in the minimum mean-square error. A parallel implementation is discussed that overcomes this loss in performance.
Keywords :
adaptive signal processing; array signal processing; cochannel interference; convergence of numerical methods; correlation methods; interference suppression; parallel architectures; Wiener model; cascade structure; cochannel interference; converged adaptive algorithms; correlated signals; correlated source signals; minimum mean-square error; multistage CM array; parallel architecture; performance loss; phantom sources; signal cancellers; signal cross-correlation; steady-state analysis; Adaptive algorithm; Adaptive arrays; Antenna arrays; Computer simulation; Performance analysis; Performance loss; Signal analysis; Source separation; Steady-state; Wireless communication;
Conference_Titel :
Signals, Systems and Computers, 1995. 1995 Conference Record of the Twenty-Ninth Asilomar Conference on
Conference_Location :
Pacific Grove, CA, USA
Print_ISBN :
0-8186-7370-2
DOI :
10.1109/ACSSC.1995.540642
