Bulletins from the Pacific Packet Radio Society - page 146
\BAY79} J. Bayless & R. Pedersen, "Efficient Pulse Shaping Using MSK or PSK Modulation", IEEE Transactions on Communications, Vol. COM-27, No. 6, June 1979
\MOR80} D . Morais & K. Ferer, "The Effects of Filtering and Limiting on the Performance of QPSK, Offset QPSK, and MSK Systems", IEEE Transactions on Communications, Vol. COM-28, No. 12, December 1980
\MUR81} K. Murota & K. Hirade, "GMSK Modulation for Digital Mobile Radio Telephony", IEEE Transactions on Communications, Vol. COM-29, No. 7, pp. 1044-50, July 1981
\RAB78} M. Rabzel & S. Pasupathy, "Spectral Shaping in Minimum Shift Keying (MSK)-Type Signals", IEEE Transactions on Communication, Vol. COM-26, No. 1, pp. 189-95, January 1978
\SUZ81} H. Suzuki, "Optimum Gaussian Filter for Differential Detection of MSK", IEEE Transactions on Communication, Vol. COM-29, No. 6, June 1981
Implementation -
Although the best implementation discussions are found in proprietary technical manuals of systems built by several corporations, a few articles do describe some details of construction. \AM078}, \CRU78} and \MAT781 present some practical hard ware notes. Masamura et al. \MAS79} show a different technique using differential detection, which needs a higher signal-to-noise ratio to work as well as straight MSK synchronous detection. This differential technique has the benefit of providing error correction, however, and could be used in a number of weak-signal or fading situations.
\AM077} F. Amoroso & J. Kivett, "Simplified MSK Signaling Technique", IEEE Transactions on Communications, Vol. COM-25, No. 4, pp. 433-41, April 1977
\CRU781 J. Cruz & R. Simpson, "Minimum-Shift-Keying Signal Detection with Noisy Reference Signals", IEEE Transactions on Communications, Vol. COM-26, No. 6, pp. 896-902, June 1978
\MAS79} T. Masamura, S. Samejima, Y. Morihiro & H. Fuketa, "Differential Detection of MSK with Nonredundant Error Correction", IEEE Transactions on Communication, Vol. COM-27, No. 6, pp. 912-18, June 1979
