Title :
Performance evaluation of space-path diversity and higher alphabet size for CDMA
Author :
Perrin, J.-H. ; Buljore, S. ; Zeidler, J. ; Milstein, L.
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., San Diego, La Jolla, CA, USA
Abstract :
For the next generation mobile systems, the design of high speed reliable wireless communications supporting data, image and voice transmission is of primary interest. Current cellular DS-CDMA systems have been designed to operate at low- or medium-bit rate transmission, of 9.6 or 14.4 kbits/s, but proposals to increase this data rate to 64 kbits/s, 384 kbits/s and 2 Mbits/s are currently being evaluated by the standard committees such as the Universal Mobile Telecommunications Service (UMTS or IMT-2000). We investigate the performance achievable by an asynchronous DS-CDMA system operating at data rates of up to 8 Mbits/s in conjunction with either QPSK or 16-QAM modulation and space-path diversity techniques in a frequency selective channel.
Keywords :
cellular radio; code division multiple access; data communication; diversity reception; fading; land mobile radio; pseudonoise codes; quadrature amplitude modulation; quadrature phase shift keying; spread spectrum communication; telecommunication channels; visual communication; voice communication; 14.4 kbit/s; 16-QAM; 2 Mbit/s; 384 kbit/s; 64 kbit/s; 8 Mbit/s; 9.6 kbit/s; IMT-2000; QPSK; UMTS; Universal Mobile Telecommunications Service; alphabet size; asynchronous DS-CDMA system; cellular DS-CDMA systems; data communication; frequency selective channel; high speed reliable wireless communications; image transmission; mobile systems; performance evaluation; space-path diversity; standard committees; voice transmission; 3G mobile communication; Delay; Fading; Filters; Frequency diversity; Interference; Multiaccess communication; Phase modulation; Quadrature phase shift keying; Wireless communication;
Conference_Titel :
Signals, Systems & Computers, 1997. Conference Record of the Thirty-First Asilomar Conference on
Conference_Location :
Pacific Grove, CA, USA
Print_ISBN :
0-8186-8316-3
DOI :
10.1109/ACSSC.1997.680055
