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A Mobile Radio Single-Frequency "Two-Way" Diversity System Using Adaptive Retransmission from the Base

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3 Author(s)
Bitler, J.Samuel ; Bell Laboratories, North Andover, MA, USA ; Hoffman, H. ; Stevens, C., II

This paper describes an adaptive retransmission system capable of providing a UHF (1 GHz) mobile radio channel with "twoway diversity." The system is unique in that all signal processing associated with the diversity combining is done at the base station. A two-branch prototype of the system, without modulation, was field tested to determine its adaptive retransmission performance. These tests indicate that the statistics of the fading envelope at both the base and mobile stations closely agree with those predicted by theory for an equal gain combiner with correlation between the branches.

Published in:

Communications, IEEE Transactions on  (Volume:21 ,  Issue: 11 )