Two Novel IIR Channel Shortening Algorithms in CDMA Systems

Author

Lan, Xu ; Zong-xin, Wang

Author_Institution

Dept. of Commun. Sci. & Eng., Fudan Univ., Shanghai

Volume

2

fYear

2006

fDate

25-28 June 2006

Firstpage

1002

Lastpage

1006

Abstract

In high-speed CDMA wireless communication systems, inter-symbol interference may become serious because of the usage of spreading sequence with small spreading factor. Channel shortening technology is an effective way to suppress ISI and improve system performance. A novel adaptive IIR channel shortening algorithm is proposed in this paper to conquer floor effect in existing channel shortening algorithms and then the application of this algorithm to SIMO systems is discussed. After that, another improved SIMO channel shortening algorithm with virtual channels is proposed to offer better system performance. Simulation results show that the two algorithms work better than conventional FIR channel shortening algorithm in SIMO environment

Keywords

IIR filters; MIMO communication; adaptive filters; code division multiple access; interference suppression; intersymbol interference; radiocommunication; wireless channels; CDMA wireless communication system; ISI suppression; SIMO system; adaptive IIR channel shortening algorithm; code division multiple access; inter-symbol interference; single input multiple output; virtual channel; Algorithm design and analysis; Communications technology; Finite impulse response filter; IIR filters; Intersymbol interference; Multiaccess communication; Polynomials; System performance; Wiener filter; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, Circuits and Systems Proceedings, 2006 International Conference on

Conference_Location

Guilin

Print_ISBN

0-7803-9584-0

Electronic_ISBN

0-7803-9585-9

Type

conf

DOI

10.1109/ICCCAS.2006.284818

Filename

4064059