Title :
A novel DOA algorithm for CDMA system
Author :
Lu, Jingyang ; Wu, Weiling
Author_Institution :
Sch. of Inf. Eng., Beijing Univ. of Posts & Telecommun., China
Abstract :
Multiple access interference (MAI) is one of the key factors affecting the performance of DOA algorithm in code division multiple access (CDMA) system. In this paper, a space-time model is developed on CDMA system, based on the model an algorithm is proposed for estimating the direction of arrival (DOA) of signals received from desired users. The relationship of the subspace of the received signal and the spreading code of the desired user is used to provide unique estimates. The theory analysis and simulations prove the proposed algorithm get the square of spreading gain to suppress the effect of MAI.
Keywords :
antenna arrays; array signal processing; code division multiple access; direction-of-arrival estimation; radiofrequency interference; CDMA systems; DOA algorithm; MAI; code division multiple access; direction-of-arrival; multiple access interference; space-time model; spreading code; Algorithm design and analysis; Analytical models; Antenna arrays; Direction of arrival estimation; Multiaccess communication; Multiple access interference; Multiple signal classification; Parameter estimation; Sensor arrays; Signal processing;
Conference_Titel :
Communication Technology Proceedings, 2003. ICCT 2003. International Conference on
Print_ISBN :
7-5635-0686-1
DOI :
10.1109/ICCT.2003.1209737
