Title :
An on-line array calibration method for the DS-CDMA system
Author :
Gang, Feng ; Zhenghe, Feng ; Zhan, Shi
Author_Institution :
State Key Lab on Microwave & Digital Commun., Tsinghua Univ., Beijing, China
fDate :
Oct. 28 2003-Nov. 1 2003
Abstract :
In this article, an eigenstructure-based on-line calibration method is presented to estimate the array channel gain and phase parameters. By employing the characteristics of the DS-CDMA system, the calibration can be carried out while the system is working. So it is quite suitable for the practical application. It first estimates the initial parameters by an iteration algorithm, and then use the subspace tracking method to trace the changes of the gain and phase parameters in real-time. The proposed algorithm is described in detail, and numerical examples are provided to demonstrate the effectiveness and behavior of the calibration method.
Keywords :
3G mobile communication; adaptive antenna arrays; calibration; channel estimation; code division multiple access; eigenstructure assignment; iterative methods; spread spectrum communication; DS-CDMA system; array channel gain estimation; direct sequence code division multiple access; eigenstructure-based method; iteration algorithm; on-line array calibration method; phase parameters estimation; subspace tracking method; Calibration; Covariance matrix; Eigenvalues and eigenfunctions; Equations; Gain measurement; Interference; MATLAB; Multiaccess communication; Noise reduction; White noise;
Conference_Titel :
Antennas, Propagation and EM Theory, 2003. Proceedings. 2003 6th International SYmposium on
Conference_Location :
Beijing, China
Print_ISBN :
0-7803-7831-8
DOI :
10.1109/ISAPE.2003.1276689
