An approach to digital signal processing for a high capacity mobile telephone system

The High Capacity Mobile Telephone Communications System (HCMTS) employs a 20K baud digital signaling system to provide information needed in the various stages of call setup and control. This paper describes the signal processing required for transmission and recovery of this digital information over the Rayleigh fading channel environment. An overview of the mobile data recovery system along with a discussion of spectrum considerations is given. Also, laboratory data taken with a Rayleigh fading simulator and results from field testing are given.