Digital Mobile Radio Communication Systems

This chapter describes digital mobile radio communication systems. It introduces some basic concepts of digital mobile communication systems: cellular systems, multiple access, channel allocation, multiplexing, intercell interference suppression and repeating system. In analog mobile communication systems, digital signals must be transmitted for system control purposes. The chapter discusses the paging systems which is a one-way (wire-line to mobile) digital transmission system. The two-way mobile radio is a press-to-talk private radio system for applications such as car dispatch services and police communications. Mobile radio communication services such as dispatch traffic were improved with the introduction of digital data transmission systems: transmission of text and other data messages can replace or assist voice communication. The chapter also describes the proposed digital cordless telephone system. It also discusses the Group Special Mobile (GSM), the American digital cellular, and the (Japanese) personal digital cellular systems. Finally, the chapter explains the wireless local area network.