A CDMA-based radio access design for UMTS

The major challenge for the CODIT (code division testbed) project is to design a concept that can support a range of new services with a bit range of up to 2 Mb/s. The concept must be flexible enough to meet the requirements of future services envisioned for UMTS. The required task of the project is to investigate a concept based on spread spectrum techniques. The system that is being developed in the project is based on direct sequence CDMA. New innovative techniques are being developed in the project, where the solutions go far beyond the CDMA concepts proposed for second generation systems. >

[1]  Torbjorn Andersson.  Tuning the macro diversity performance in a DS-CDMA system , 1994, Proceedings of IEEE Vehicular Technology Conference (VTC).

[2]  Uwe-Carsten Fiebig,et al.  Design study for a CDMA-based third-generation mobile radio system , 1994, IEEE J. Sel. Areas Commun..

[3]  M. Almgren,et al.  Capacity enhancements in a TDMA system , 1993, IEEE 43rd Vehicular Technology Conference.

[4]  Karl Hellwig,et al.  A VR-CELP codec implementation for CDMA mobile communications , 1994, Proceedings of ICASSP '94. IEEE International Conference on Acoustics, Speech and Signal Processing.

[5]  Jan Gustafsson,et al.  Radio Protocol Architecture of the CODIT UMTS System , 1994, Mobile Communications.

[6]  Lars-Magnus Ewerbring,et al.  A coherent detection scheme for the uplink channel in a CDMA system , 1994, Proceedings of IEEE Vehicular Technology Conference (VTC).

[7]  Evangelos Eleftheriou,et al.  Concatenated Coding Scheme for Reliable Data Transmission in CDMA Cellular Systems , 1994, Mobile Communications.