Performance of 12PM3 modulation methods in digital land mobile radio with discrimination detection
- 1 January 1986
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- Vol. 36, 149-156
- https://doi.org/10.1109/vtc.1986.1623426
Abstract
The performance of a number of narrowband continuous-phase modulation methods, belonging to the 12PM3 class (12-state, Phase Modulation with correlation over 3 consecutive bits), has been compared with reference to both AWGN (Additive White Gaussian Noise) channels and the typical propagation conditions envisaged for SCPC/FDMA digital land mobile radio systems in urban environment. Demodulation has been performed by frequency discrimination using at the receiving end pre- and post-discrimination filters optimized for the best performance. Different decision techniques have been considered, namely 2-TH (2-Threshold), 4-TH, mixed 2-TH/4-TH and MLSE (Maximum Likelyhood Sequence Estimation) techniques.Keywords
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