Title :
Performance of CDMA with DS/SS/GMSK
Author :
Ogawa, Akira ; Katayama, Masaaki ; Yamazato, Takaya ; Maebara, Tsuneo
Author_Institution :
Dept. of Inf. Eng., Nagoya Univ., Japan
Abstract :
The paper is concerned with a study result on the performance of an asynchronous CDMA system in which information data are spectrum-spread with PN sequences, and the chip signals are modulated with GMSK. The GMSK signaling has remarkable features such as limited bandwidth and constant envelope, which are attractive for mobile communications. In the paper, the bit error rate performance and the spectral efficiency of the CDMA system are evaluated. As a result of the study, it is indicated that the spectral efficiency of CDMA with DS/SS/GMSK is better than that of CDMA with DS/SS/offset-QPSK in the presence of severe nonlinearity in the mobile transmitter
Keywords :
code division multiple access; error statistics; land mobile radio; minimum shift keying; pseudonoise codes; radio spectrum management; spread spectrum communication; CDMA; DS-SS; GMSK; PN sequences; asynchronous CDMA system; bandwidth; bit error rate performance; chip signals; direct sequence spread spectrum; envelope; information data; mobile communications; mobile transmitter; nonlinearity; spectral efficiency; Band pass filters; Bandwidth; Bit error rate; Degradation; Frequency response; Interference; Mobile communication; Multiaccess communication; Signal generators; Transmitters;
Conference_Titel :
Spread Spectrum Techniques and Applications, 1994. IEEE ISSSTA '94., IEEE Third International Symposium on
Conference_Location :
Oulu
Print_ISBN :
0-7803-1750-5
DOI :
10.1109/ISSSTA.1994.379522
