We design new continuous phase modulation (CPM) formats, which are based on the combination of a proper precoder with binary input and a ternary CPM. The proposed precoder constrains the signal phase evolution in order to increase the minimum Euclidean distance, and to limit the bandwidth expansion due to the use of a ternary CPM. The resulting schemes are highly spectrally efficient and outperform classical binary and quaternary formats in terms of coded and uncoded performance.
Binary CPMs with improved spectral efficiency / Messai, Malek; Piemontese, Amina; Colavolpe, Giulio; Amis, Karine; Guilloud, Frédéric. - In: IEEE COMMUNICATIONS LETTERS. - ISSN 1089-7798. - 20:1(2016), pp. 85-88. [10.1109/LCOMM.2015.2502247]
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