On the performance of a higher order alphabet size in CDMA

Author

Milstein, Laurence B. ; Lim, Myoung S.

Author_Institution

Dept. of Electr. & Comput. Eng., California Univ., San Diego, La Jolla, CA, USA

Volume

1

Issue

1

fYear

1997

Firstpage

9

Lastpage

11

Abstract

Due to the desire for the next generation of wireless communications systems to be able to support higher data rate, multimedia, traffic, it is of interest to determine if the use of a higher order alphabet size, in conjunction with code division multiple access (CDMA) signaling, will allow enhanced performance. We compare the performance of an asynchronous CDMA system when a 16-QAM alphabet is used with that of a CDMA system employing QPSK as the modulation format.

Keywords

code division multiple access; multimedia communication; quadrature amplitude modulation; quadrature phase shift keying; telecommunication signalling; telecommunication traffic; 16-QAM alphabet; CDMA signaling; QPSK; asynchronous CDMA system; code division multiple access; high data rate; higher order alphabet size; modulation format; multimedia traffic; system performance; wireless communications systems; AWGN; Constellation diagram; Delay effects; Modulation; Multiaccess communication; Multimedia systems; Probability; Quadrature phase shift keying; Rayleigh channels; Wireless communication;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/4234.552141

Filename

552141