Rapid DOA Estimating Algorithm Based on FFT and Its Application to DS-CDMA Receiver

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2002, Vol. 25 ›› Issue (4): 79-83.

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Rapid DOA Estimating Algorithm Based on FFT and Its Application to DS-CDMA Receiver

ZHAI Ming-yue¹, LIU Yuan-an¹, YU Ping²

1.Telecommunication Engineering School, Beijing University of Posts and Telecommunications, Beijing 100876, China;
2.Information Center of Shengli Oilfield, Hebei 250013, China

Received:2001-10-16 Online:2002-11-10
Supported by:

Abstract

Abstract: After CDMA signals are despreaded, the signal of thedesired user is stronger than others. Based on this property, FFT can be appliedto DOA estimations in array signals. Comparison with MUSIC algorithm is performed, and the results show FFT is applicable in DOA estimations. DOA information can be used in initializing the weights of the adaptive beamforming. Simulationsshow that LMS convergence rate is speeded and the error is greatly reduced.

Key words: DOA, FFT, LMS, smart antenna

CLC Number:

TN929.533

ZHAI Ming-yue, LIU Yuan-an, YU Ping. Rapid DOA Estimating Algorithm Based on FFT and Its Application to DS-CDMA Receiver[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2002, 25(4): 79-83.

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Rapid DOA Estimating Algorithm Based on FFT and Its Application to DS-CDMA Receiver

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