Low-complexity adaptive array for DS/CDMA code acquisition

Hua Lung Yang*, Wen-Rong Wu

*Corresponding author for this work

研究成果: Conference contribution

1 引文 斯高帕斯(Scopus)

摘要

Conventional array code acquisition uses a correlator bank and an adaptive beamformer. However, its performance degrades significantly while multiple access interference (MAI) presents. In this paper, we propose a low-complexity adaptive filtering scheme to solve the problem. The proposed scheme comprises two adaptive filters, an adaptive spatial and an adaptive temporal filter. With a special structure, the spatial filter can act as a beamformer suppressing interference, while the temporal filter can act as a code-delay estimator. A criterion is proposed for minimization such that these filters can simultaneously adjusted by a constrained least-mean-square (LMS) algorithm. The proposed system is simple and it can acquire both the code-delay and direction-of-arrival (DoA) of the desired user. The performance as well as the convergence behavior of the proposed algorithm are analyzed analytically. Closed-form expressions for optimum filters and steady-state mean-squared errors (MSE) are derived. Computer simulations show that the mean acquisition time of the proposed system is much shorter than that of the conventional system.

原文English
主出版物標題ISCAS 2006
主出版物子標題2006 IEEE International Symposium on Circuits and Systems, Proceedings
頁面193-196
頁數4
DOIs
出版狀態Published - 1 十二月 2006
事件ISCAS 2006: 2006 IEEE International Symposium on Circuits and Systems - Kos, Greece
持續時間: 21 五月 200624 五月 2006

出版系列

名字Proceedings - IEEE International Symposium on Circuits and Systems
ISSN(列印)0271-4310

Conference

ConferenceISCAS 2006: 2006 IEEE International Symposium on Circuits and Systems
國家Greece
城市Kos
期間21/05/0624/05/06

指紋 深入研究「Low-complexity adaptive array for DS/CDMA code acquisition」主題。共同形成了獨特的指紋。

  • 引用此

    Yang, H. L., & Wu, W-R. (2006). Low-complexity adaptive array for DS/CDMA code acquisition. 於 ISCAS 2006: 2006 IEEE International Symposium on Circuits and Systems, Proceedings (頁 193-196). [1692555] (Proceedings - IEEE International Symposium on Circuits and Systems). https://doi.org/10.1109/ISCAS.2006.1692555