Laplacian Filtered Minimum Shift Keying

Abstract

This paper describes a new method of premodulation filtered MSK called Laplacianfiltered minimum shift keying (LMSK). LMSK is proposed as a method for achieving good spectral efficiency over regular MSK and it turns out to achieve improvement in error rate performance over the known Gaussian filtered minimum shift keying (GMSK). To compare the behavior of the system under the proposed new technique, bandwidth efficiency (i.e., bps/Hz) and fractional out-of-band power is used. As well, error rate performance in such systems is used in the evaluation of this work.