Generalization of a Techinque for Binary Data Communication

A technique for binary data transmission is described, in which each binary symbol is chosen to be a prescribed superposition ofnimpulses of form(sin 2)/2, spaced at intervals 1/2F. Such superposition leads to more than two received levels with binary input, but in return permits realization of the Nyquist rate (2F symbols/s in bandwidthF). Appropriate choice of the superposition coefficients provides a variety of spectral distributions to suit individual applications. The most interesting classes of system functions are defined, the associated coding procedures are described, and the performance characteristics are summarized.