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Examples of Continuous Phase Modulation Using Discriminator Detection

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5 Author(s)
Kalet, I. ; Center for Technical Education, Holon, Israel ; Shamai (Shitz), S. ; Haddad, Z. ; Trachtman, A.
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Continuous phase modulation (CPM) techniques for digital communication have been proposed to achieve narrow bandwidth and good bit error rate (BER) performance in coherent systems. These modulation schemes may also be used with noncoherent discriminator detection. However, in this case, the CPM schemes should be designed for noncoherent detection. Using a receiver proposed by Chung for GTFM and "modified GTFM" signals, we show that it is possible to slightly improve BER performance over that of previous GTFM noncoherent schemes. We also show that a form of GMSK can achieve discriminator detectability performance almost equal to that of classical binary FSK (modulation index = 0.7) but with a much narrower bandwidth.

Published in:

Communications, IEEE Transactions on  (Volume:34 ,  Issue: 11 )