Multitransmitter digital signal transmission by using offset frequency strategy in a land-mobile telephone system
- 1 November 1978
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Vehicular Technology
- Vol. 27 (4) , 231-238
- https://doi.org/10.1109/t-vt.1978.23754
Abstract
In a high-capacity land-mobile telephone system which employs a small zone technique, it is advantageous to provide control channels separate from voice channels. We first review two control channel allocation methods: the individual control zone system and the multiple control zone system. From the viewpoints of efficient frequency utilization and reliable call processing, the multiple control zone system is shown to be preferable. It is experimently verified that an offset carrier frequency strategy is well suited to the realization of this system. Simulation test results are presented which determine the design parameters. Offset carrier frequency allocation methods concerning three types of fundamental zone configuration are derived. The carrier frequency synchronization and the phase adjustment of the modulation signals are investigated for the actual system construction.Keywords
This publication has 3 references indexed in Scilit:
- 800-MHz band land mobile telephone system—Overall viewIEEE Transactions on Vehicular Technology, 1978
- Design for system reliability in personal radio signalingIEEE Transactions on Vehicular Technology, 1976
- Analysis of radio paging errors in multitransmitter mobile systemsIEEE Transactions on Vehicular Technology, 1973