CDMA system for UMTS high bit rate services

A CDMA based radio system capable of supporting UMTS services up to 2 Mbit/s user bit rates is considered. The performance of the system is evaluated by link level simulations, cell range calculations and network level capacity simulations in the urban macro cell, urban street micro cell and indoor cell environment using three bandwidths. According to the results 2 Mbit/s transmission was achieved with reasonable signal-to-noise ratio in all the simulated environments. Moreover, sufficient cell ranges can be realized using reasonable power levels in the indoor and micro cell environments. In the macro cell environment the achievable range should be larger. In the considered case the downlink capacity of the cellular network offering 2 Mbit/s services is only moderate and much lower than the uplink capacity.

[1]  Harri Holma,et al.  A performance analysis of TDMA and CDMA based air interface solutions for UMTS high bit rate services , 1997, Proceedings of 8th International Symposium on Personal, Indoor and Mobile Radio Communications - PIMRC '97.

[2]  Lars-Magnus Ewerbring,et al.  A CDMA-based radio access design for UMTS , 1995, IEEE Wirel. Commun..

[3]  Ari Hottinen,et al.  Performance of CDMA multiuser detection with antenna diversity and closed loop power control , 1996, Proceedings of Vehicular Technology Conference - VTC.

[4]  C. Mourot,et al.  An advanced TDMA mobile access system for UMTS , 1994, 5th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, Wireless Networks - Catching the Mobile Future..

[5]  Juha Rapeli,et al.  UMTS: targets, system concept, and standardization in a global framework , 1995, IEEE Wirel. Commun..

[6]  A. Toskala,et al.  Capacity evaluation of a cellular CDMA uplink with multiuser detection , 1996, Proceedings of ISSSTA'95 International Symposium on Spread Spectrum Techniques and Applications.

[7]  T. Ojanpera,et al.  Design of a 3rd generation multirate CDMA system with multiuser detection, MUD-CDMA , 1996, Proceedings of ISSSTA'95 International Symposium on Spread Spectrum Techniques and Applications.

[8]  E. Nikula,et al.  High bit rate services for UMTS using wideband TDMA carriers , 1996, Proceedings of ICUPC - 5th International Conference on Universal Personal Communications.