Performance of MC-CDM Systems With MMSEC Over Rayleigh Fading Channels

Author

Lee, Yusung ; Kim, Namshik ; Park, Hyuncheol

Author_Institution

Dept. of Inf. Commun. Eng., Korea Adv. Inst. of Sci. & Technol., Daejeon, South Korea

Volume

59

Issue

6

fYear

2010

fDate

7/1/2010 12:00:00 AM

Firstpage

3126

Lastpage

3130

Abstract

In this paper, we investigate the performance of multicarrier code-division multiplexing (MC-CDM) systems with minimum mean square error combining (MMSEC) over a Rayleigh fading channel. An approximated expression on the symbol error rate (SER) for MMSEC is derived. The approximated expression provides an accurate approximation of the true SER, particularly for systems with higher modulation and a small spreading factor. Through the derived error performances, we also calculate the achievable diversity order. MC-CDM systems with MMSEC achieve the same asymptotical diversity order of 1, regardless of the spreading factor. Within practical signal-to-noise ratio (SNR) ranges, the effective diversity order is further increased as a larger spreading factor is used. The derived analytical expressions are verified by numerical and simulation results.

Keywords

Rayleigh channels; code division multiple access; numerical analysis; MC-CDM systems; MMSEC; Rayleigh fading channels; minimum mean square error combining; multicarrier code-division multiplexing; numerical simulation; signal-to-noise ratio; symbol error rate; Minimum mean square error combining (MMSEC); multicarrier code-division multiple access (MC-CDMA); multicarrier code-division multiplexing (MC-CDM);

fLanguage

English

Journal_Title

Vehicular Technology, IEEE Transactions on

Publisher

ieee

ISSN

0018-9545

Type

jour

DOI

10.1109/TVT.2010.2046506

Filename

5438789