Publications – Details
Improved Soft Handoff and Macro-Diversity for Mobile Radio
- Author:
- Wolfgang Papen
- Book Title:
- Proceedings of IEEE International Conference on Communications (ICC)
- Venue:
- Seattle, Washington, USA
- Date:
- June 1995
- Pages:
- 1828–1833
- Language:
- English
Abstract
This paper presents a new combining scheme for soft handoff techniques in the uplink. In comparison to hard handoff schemes, soft handoff or macro-diversity combining, respectively, offers significant improvements concerning coverage as well as capacity for cellular mobile radio systems. Besides that, it increases signal transmission quality and avoids the ping-pong effect occurring when a mobile near the cell boundaries switches from one base station to its neighbor back and forth. Simulation results establish that the proposed new combining scheme performs up to 5 dB better than conventional soft handoff methods based on the selection of speech frames. The additional expense in bandwidth on the links between base stations and combining unit is moderate since only hard quantized bits plus side information once per frame need to be transmitted.
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