Patent ID: 6208630
Filing Date: 2001-03-27
Classification: H04B,H04J,H04W,Y02D

Abstract:
A radio telephone system for supporting communications between a base station and a plurality of remote subscriber stations on repetitive time slots of high frequency radio channels comprising:a group of modems assignable to said subscriber stations, each of said modems being capable of digitally synthesizing, modulating and demodulating a plurality of channel-identifying intermediate frequencies on successive ones of said repetitive time slots to simultaneously handle a number of communications during successive time slots;means for sending and receiving said channel-identifying intermediate frequencies between said base station and said subscriber stations;means for upwardly block converting all of said intermediate frequencies produced by said group of modems to said high frequency radio channels; andmeans for downwardly block converting said high radio frequency channels to a plurality of modulated channel-identifying intermediate frequencies.