DS-CDMA chip waveform design for optimal power-bandwidth performance

Author

Landolsi, Mohamed A. ; Stark, Wayne E.

Author_Institution

Syst. Eng. Div., Bell Northern Res., Richardson, TX, USA

Volume

2

fYear

1995

fDate

27-29 Sep 1995

Firstpage

706

Abstract

The effect of chip waveform shaping on the power efficiency and spectral occupancy of DS-CDMA communication systems is investigated assuming random sequences and coherent reception. A method for designing optimum chip waveforms that minimise the average power of the multiple access interference at a given bandwidth occupancy is derived. The performance improvements of the optimally designed chip waveforms are illustrated by comparing the achieved SIR gain and capacity increase with the figures of some known examples of modulation schemes (such as OQPSK and MSK) that employ conventional chip shaping pulses

Keywords

code division multiple access; interference suppression; minimum shift keying; optimisation; pseudonoise codes; quadrature phase shift keying; random processes; sequences; spread spectrum communication; DS-CDMA chip waveform design; MSK; OQPSK; SIR gain; bandwidth occupancy; capacity increase; chip waveform shaping; coherent reception; modulation schemes; multiple access interference; optimal power-bandwidth performance; power efficiency; random sequences; spectral occupancy; Bandwidth; Delay; Design engineering; Multiaccess communication; Multiple access interference; Power system modeling; Pulse modulation; Pulse shaping methods; Random variables; Signal processing;

fLanguage

English

Publisher

ieee

Conference_Titel

Personal, Indoor and Mobile Radio Communications, 1995. PIMRC'95. Wireless: Merging onto the Information Superhighway., Sixth IEEE International Symposium on

Conference_Location

Toronto, Ont.

Print_ISBN

0-7803-3002-1

Type

conf

DOI

10.1109/PIMRC.1995.480961

Filename

480961