Title :
Interference suppression for spatial-temporal propagation parameter identification in wireless communications
Author :
Ristaniemi, Tapani ; Wu, Rui
Author_Institution :
Inst. of Commun. Eng., Tampere Univ. of Technol., Finland
Abstract :
Independent component analysis (ICA) is considered for code timing and direction-of-arrival (DOA) estimation, here called two-dimensional code acquisition, in a direct sequence spread spectrum communication system utilizing antenna arrays. A new method, named independent component analysis frequency selection (ICA-FS), is used to perform interference suppression before parameter estimation in order to decrease parameter estimation error. It requires a training sequence corresponding to the desired user to be known, and data signals corresponding to different users to be statistically independent.
Keywords :
array signal processing; code division multiple access; delay estimation; direction-of-arrival estimation; independent component analysis; interference suppression; spread spectrum communication; DOA estimation; DS-CDMA; antenna arrays; code timing estimation; direct sequence spread spectrum communication system; direction-of-arrival estimation; independent component analysis frequency selection; interference suppression; parameter estimation error; spatial-temporal propagation parameter identification; time delay estimation; training sequence; two-dimensional code acquisition; wireless communications; Antenna accessories; Antennas and propagation; Direction of arrival estimation; Directive antennas; Independent component analysis; Interference suppression; Parameter estimation; Spread spectrum communication; Timing; Wireless communication;
Conference_Titel :
Communications, Circuits and Systems, 2004. ICCCAS 2004. 2004 International Conference on
Print_ISBN :
0-7803-8647-7
DOI :
10.1109/ICCCAS.2004.1346352
