A Service Test Mobile Telephone Control Unit By J. T.
In the A M P S system, the interface between the land telephone network and the radio paths to the mobiles occurs at the cell sites.
The cellular concept, which achieves radio spectrum efficiency through the technique of frequency reuse, requires a grid of control elements (cell sites) distributed throughout a mobile coverage ar
The Advanced Mobile Phone Service (AMPS) system is composed of four major elements: the Electronic Switching System, the data link, the cell site, and the mobile unit.
The potential for communicating with nonfixed points over the horizon without the use of wires was soon recognized following the invention of radio in the late 1800s and its development in the earl
The Advanced Mobile Phone Service (AMPS) provides high-capacity, high-quality mobile telephone service to a large number and variety of customers.
The preceding paper in this issue1 noted that Bell System planners were already looking ahead to a more economical and widespread form of mobile-telephone service when early mobile telephone system
Bell Laboratories is engaged in an ongoing field studies program to characterize the performance of UHF cellular mobile telecommunications systems.
The Developmental System By D. L. HUFF (Manuscript received July 27, 1978) A developmental AMPS system has been implemented in the urban and suburban areas of Chicago.
Voice and Data Transmission By G. A. ARREDONDO, J. C. FEGGELER, and J. I.
