Title :
Radio architecture of a wideband DS-CDMA testbed for future cellular systems
Author :
Anzill, W. ; Melander, T.
Author_Institution :
Ericsson Radio Syst. AB, Stockholm, Sweden
Abstract :
The radio implementation of a wideband test system which has been developed by Ericsson is described. With the testbed, wireless multimedia service investigations for UMTS/FPLMTS can be done under field conditions. The system architecture provides a flexible air interface where new services can easily be introduced. Already implemented services are high quality speech with fixed or variable data rates as well as high data rate transmissions for video, Internet or other TCP/IP data applications. The high data rates and the flexibility of applications result in new demands for the radio architecture and for key components, like digital-to-analog and analog-to-digital converters and power amplifiers. This paper provides a system overview describing some applications and a more detailed description of the radio architecture of the wideband testbed. Finally measurements of the data throughput and of the radio channel are shown.
Keywords :
broadband networks; cellular radio; code division multiple access; data communication; land mobile radio; multimedia communication; radio networks; speech codecs; telecommunication equipment testing; transceivers; 128 kbit/s; 16 kbit/s; Ericsson; Internet; UMTS/FPLMTS; analog-to-digital converters; cellular systems; data throughput; digital-to-analog converters; flexible air interface; high data rate transmissions; high quality speech; power amplifiers; radio architecture; radio channel measurements; system overview; transceiver architecture; video; wideband DS-CDMA testbed; wideband test system; wireless multimedia service; 3G mobile communication; Analog-digital conversion; Broadband amplifiers; High power amplifiers; Multiaccess communication; Speech; System testing; TCPIP; Web and internet services; Wideband;
Conference_Titel :
Microwave Symposium Digest, 1997., IEEE MTT-S International
Conference_Location :
Denver, CO, USA
Print_ISBN :
0-7803-3814-6
DOI :
10.1109/MWSYM.1997.596587