Title :
Blind closed-form array response estimation in wireless communication
Author :
Jin, Liang ; Yao, Min-li ; Qin-Ye Yin
Author_Institution :
Inst. of Inf. Eng., Xi´´an Jiaotong Univ., China
Abstract :
A closed-form array response estimation (CARE) technique for blind source separation in wireless communication is developed. By exploiting the data structure of second-order statistics of the array output in the presence of multipath, we construct a signature matrix in such a way that its eigenvectors corresponding to non-zero eigenvalues are just the array response vectors. Thus a closed-form solution of array response can be obtained by eigen-decomposition. The theoretical analysis and the simulations show that the proposed method achieves array response estimation with little constraint on signal property and propagation environment such as scatters or angular spread. Moreover, the array considered here can be of arbitrary geometry and even uncalibrated
Keywords :
array signal processing; cochannel interference; eigenvalues and eigenfunctions; interference suppression; land mobile radio; matrix algebra; multipath channels; statistical analysis; CARE method; angular spread; antenna arrays; array output; array response estimation; array response vectors; blind closed-form array response estimation; blind source separation; closed-form solution; co-channel interference cancellation; data structure; eigen-decomposition; eigenvectors; mobile communication; multipath; nonzero eigenvalues; propagation environment; scatters; second-order statistics; signal property; signature matrix; wireless communication; Analytical models; Blind source separation; Closed-form solution; Constraint theory; Data structures; Eigenvalues and eigenfunctions; Scattering; Signal analysis; Statistics; Wireless communication;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1999. Proceedings., 1999 IEEE International Conference on
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-5041-3
DOI :
10.1109/ICASSP.1999.761372