Title :
Estimation of correlated cochannel signals using the constant modulus array
Author :
Mathur, Amit ; Keerthi, Arvind V. ; Shynk, John J.
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., Santa Barbara, CA, USA
Abstract :
The steady-state behavior of the cascade multistage constant modulus (CM) array is analyzed for correlated cochannel signals. It is demonstrated that the capture performance of the cascade system gradually deteriorates with increasing source cross-correlation. To overcome this loss, we consider using a parallel version of the multistage CM array that is appropriately initialized by a direction-finding algorithm. The proposed method of initialization is based on a single-stage CM array and a signal canceller adapted in tandem. Computer simulations are presented to illustrate the signal capture properties of the parallel multistage CM array
Keywords :
adaptive signal processing; direction-of-arrival estimation; stochastic processes; Wiener model; adaptive beamformer; capture performance; cascade multistage constant modulus array; computer simulations; correlated cochannel signal estimation; direction-finding algorithm; initialization; signal canceller; signal capture properties; source cross-correlation; steady-state behavior; stochastic analysis; Adaptive arrays; Computer simulation; Convergence; Error correction; Least squares approximation; Navigation; Signal analysis; Signal design; Steady-state; Vectors;
Conference_Titel :
Communications, 1995. ICC '95 Seattle, 'Gateway to Globalization', 1995 IEEE International Conference on
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-2486-2
DOI :
10.1109/ICC.1995.524457
