Title :
Multistage interference cancellation smart antennas with initial weight vector substitution
Author :
Liu, Hsin-Chin ; Doherty, John F.
Author_Institution :
Dept. of Electr. Eng., Nat. Kaohsiung Univ., Taiwan
Abstract :
Multistage interference cancellation smart antennas (MICSA) scheme can achieve faster interference suppression than conventional single stage smart antennas for large deviations of receiving powers. However, the interference suppression rates of the second and the subsequent stages are reduced due to accumulative activation delays. This paper presents a scheme to set the initial weight vector in the current stage to alleviate the problem. Simulation results of MICSA scheme with the initial weight vector substitution validate the assumption.
Keywords :
adaptive antenna arrays; delays; interference suppression; radiocommunication; radiofrequency interference; activation delay; initial weight vector substitution; interference suppression; multistage interference cancellation smart antenna; wireless communication industry; Adaptive algorithm; Adaptive arrays; Bandwidth; Covariance matrix; Delay; Interference cancellation; Interference suppression; Multiple access interference; Receiving antennas; Signal to noise ratio;
Conference_Titel :
Signals, Systems and Computers, 2004. Conference Record of the Thirty-Seventh Asilomar Conference on
Print_ISBN :
0-7803-8104-1
DOI :
10.1109/ACSSC.2003.1291993
