Effect of chip shaping on the performance of band-limited multicarrier CDMA systems

Author

Nguyen, Ha H.

Author_Institution

Dept. of Electr. Eng., Saskatchewan Univ., Saskatoon, Sask., Canada

Volume

1

fYear

2002

fDate

2002

Firstpage

128

Abstract

This paper investigates the effect of chip waveform shaping on the multiple access interference (MAI) in bandlimited multicarrier CDMA (MC-CDMA) systems. It is demonstrated that, compared to single carrier CDMA (SC-CDMA) systems, chip waveform shaping has much smaller influence on the performance of MC-CDMA systems. It is also shown that the optimum chip waveform for MC-CDMA systems is practically the same as that of a SC-CDMA system. A criterion for the performance comparison of different bandlimited chip waveforms based on the elementary density function is introduced. Finally, the effect of varying the roll-off factor of a bandlimited chip waveform on the MAI level is also investigated.

Keywords

bandlimited communication; code division multiple access; interference suppression; mobile radio; spread spectrum communication; MAI; MC-CDMA; bandlimited multicarrier CDMA systems; chip waveform shaping; elementary density function; multiple access interference; performance; roll-off factor variation; Bandwidth; Degradation; Fast Fourier transforms; Interference; Multiaccess communication; Multicarrier code division multiple access; Shape; Transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

Spread Spectrum Techniques and Applications, 2002 IEEE Seventh International Symposium on

Print_ISBN

0-7803-7627-7

Type

conf

DOI

10.1109/ISSSTA.2002.1049300

Filename

1049300