DS-CDMA中基于MMSE相关器的RAKE接收机

刘拥军; 苟彦新; 程国兵; 刘勇

DS-CDMA中基于MMSE相关器的RAKE接收机

计量
- 文章访问数: 2399
- HTML全文浏览量: 116
- PDF下载量: 1037
- 被引次数: 0
出版历程
- 收稿日期: 2003-11-18
- 修回日期: 2004-04-27
- 刊出日期: 2005-03-19

MMSE Correlator Based RAKE Receiver for DS-CDMA

摘要

摘要: 该文研究了DS-CDMA中用于频率选择性多径信道RAKE接收机的限阶MMSE相关器的性能，这种基于CSA(Correlations Subtractive Architecture)结构的MMSE相关器很适用于频率选择性多径信道。通过用MMSE柑关器取代普通多用户RAKE接收机的传统相关器，可以达到与扩展到多个码元的MMSE接收机相近的BER性能。CSA产生MMSE相关器不需要矩阵的逆变换，降低了运算复杂度，有利于直接取代普通RAKE接收机的相关器。
- DS-CDMA; RAKE接收机; MMSE; CSA; MWF（MultistageWienerFilter）算法
Abstract: This paper investigates the performance of a reduced rank MMSE correlator for a RAKE receiver in the context of CDMA in frequency selective multipath. The MMSE correlator based on the Correlations Subtractive Architecture (CSA) is very suit for frequency selective multipath. It is emonstrated that the standard multiuser limited RAKE receiver can achieve BER performance close to the MMSE receiver spanning multiple symbols by replacing its conventional correlator with an MMSE correlator. The CSA generates an MMSE correlator without requiring atrix inversion, thereby reducing computational complexity; this facilitates direct replacement of the standard RAKE correlator.

HTML全文

参考文献(1)

Honig M L, Goldstein J S. Adaptive reduced-rank residual correlation algorithms for DS-CDMA interference suppression. in Proc. of Asilomar, Asilomar, Jul. 1998: 1107-1110.[2]Honig M L, Poor H V. Adaptive interference suppression. In Poor, H V, Wornell, G W, editors, Wireless Communications: Signal Processing Perspectives, Englewood Cliffs, New Jersey: Prentice Hall. 1998:64-102.[3]Song Y, Roy S. Blind adaptive reduced-rank detection for DS-CDMA signals in multipath channels[J].IEEE Journal on Selected Areas in Communications.1999, 17(11):1960-1970[4]Madhow U. Blind adaptive interference suppression for direct-sequence CDMA[J].Proc. IEEE.1998, 86(10):2049-2069[5]Goldstein J S, Reed I S, Scharf L L. A multistage representation of the wiener filter based on orthogonal projections[J].IEEE Trans. on Information Theory.1998, 44(6):2943-2959[6]Honig M L, Xiao W. Large system analysis of reduced-rank linear interference suppression. Proc. 37th Annual Allerton Conference on Communications, Systems, and Computing, Allerton, 1999:23-24.[7]Myrick W L.[J].Zoltowski M D, Goldstein J S. Exploiting conjugate symmetry in power minimization based Pre-processing for GPS:reduced complexity and smoothness. Proc. of 2000 IEEE Intl Conf. on Acoustics, Speech, and Signal Processing, Istanbul,Turkey, 5-9 June.2000,:-Ricks D C, Goldstein J S. Efficient architectures for implementing adaptive algorithms. Proc. of the 2000 Antenna Applications Symposium, Allerton Park, Monticello, Illinois, September 20-22, 2000:29-41.

施引文献

资源附件(0)

访问统计