Title :
An new initial method for CMA antenna array
Author :
Ming-hua, Zhu ; Yuan-An, Liu ; Hui-lan, Wu
Author_Institution :
Telecom Eng. Sch., Beijing Univ. of Posts & Telecommun., China
Abstract :
In the realistic environment of mobile communications, a CMA (constant modulus algorithm) adaptive array receives many constant modulus signals. Its capability to capture the desired signal is influenced by its initialization. In this paper, we suggest a new initial method which is based on Chebyshev antenna arrays for CMA arrays, on the conditions that the DOA (direction of arrival) of the desired signal is known. The results of simulation show that the new method can not only make a CMA array converge faster, but also control the CMA to converge on the desired signal even if the differences between the incident angles of desired signal and interference signals are small. So it is an effective and practical method
Keywords :
adaptive antenna arrays; antenna radiation patterns; convergence; mobile radio; receiving antennas; CMA antenna array; Chebyshev antenna arrays; DOA; adaptive array; constant modulus algorithm antenna; constant modulus signals; convergence; desired signal; direction of arrival; initial method; initialization; interference signals; mobile communications; Adaptive algorithm; Adaptive arrays; Antenna arrays; Chebyshev approximation; Convergence; Directive antennas; Fluctuations; Interference; Mobile communication; Sampling methods;
Conference_Titel :
Info-tech and Info-net, 2001. Proceedings. ICII 2001 - Beijing. 2001 International Conferences on
Conference_Location :
Beijing
Print_ISBN :
0-7803-7010-4
DOI :
10.1109/ICII.2001.983636
