JD-CDMA mobile station envelope characteristics and spectra results from a JD-CDMA testbed

Author

Bahrenburg ; Euscher, C. ; Mayer, J. ; Schlee, J. ; Weber, T.

Author_Institution

Siemens AG, Munich, Germany

Volume

3

fYear

1998

fDate

18-21 May 1998

Firstpage

2316

Abstract

The requirements on linearity and the power spectrum of TDMA/CDMA systems are an issue coming up in the standardisation process of the Universal Mobile Telecommunications System (UMTS) standard. The feasibility of transmitting QPSK and 16-QAM signals in multi-code operation with low cost terminals is questioned and the spectral artefacts due to the short code design are said to be unfavourable. A JD-CDMA hardware demonstrator was build to investigate the properties of joint-detection-CDMA in practice. In this paper measurement results and experiences with the demonstrator are presented. It is shown that even with low cost terminals the linearity and spectrum requirements can be fulfilled

Keywords

cellular radio; code division multiple access; quadrature amplitude modulation; quadrature phase shift keying; spectral analysis; 16-QAM; JD-CDMA mobile station envelope characteristics; QPSK; UMTS; Universal Mobile Telecommunications System; hardware demonstrator; joint-detection-CDMA; linearity; low cost terminals; multi-code operation; power spectrum; short code design; spectra; spectral artefacts; standardisation process; Costs; GSM; Hardware; Linearity; Multiaccess communication; Multiple access interference; Peak to average power ratio; Quadrature phase shift keying; Testing; Time division multiple access;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 1998. VTC 98. 48th IEEE

Conference_Location

Ottawa, Ont.

ISSN

1090-3038

Print_ISBN

0-7803-4320-4

Type

conf

DOI

10.1109/VETEC.1998.686171

Filename

686171