Adaptive equalization in TDMA mobile radio systems
- 1 January 1987
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- Vol. 37, 385-392
- https://doi.org/10.1109/vtc.1987.1623574
Abstract
Digital transmission on a mobile radio channel requires sophisticated adaptive reception techniques. Two classes of non-linear adaptive equalization structures are studied in the present paper: the Maximum Likelihood Sequence Estimation (MLSE) and the Decision Feedback Equalizer (DFE). A coherently detected GMSK modulation has been assumed, with a 300 kb/s bit rate in a TDMA frame structure. Simulation results are presented with different kinds of static or dynamic multipath patterns. The results show that acceptable performance around the threshold objective of BER = 1% can be achieved without excessive complexity with both schemes. A further benefit will be provided by the use of FEC coding not considered here. At this point a direct comparison between the two structures may not be fair, because optimization work has not yet been completed to put both of them in optimal operating conditions.Keywords
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