Base station transmission-reception apparatus for cellular syste

Bulletin board resource for communication system access

Call control method for a radio system

Cellular system employing base station transmit diversity accord

Cellular telephone anti-fraud system

Circuit arrangement for protecting a control channel from jammin

Circuit for stopping data transmission responding to low level a

Communication control system

Communication diversity by image reception

Communication system and mode-changing method for same

Communication system for communicating information ascertaining

Communication system to simultaneously operate a plurality of RF

Communication system utilizing radiating transmission line

Communication system with bit sampling method in portable receiv

Communication system with mobile stations

Communication systems for transportation undertakings

Communication technique employing variable information transmiss

Communication via leaky cables

Communications control circuit with adaptive timing

Computer aided dispatch system