The present invention is directed to a communication system which can be utilized to complement an existing cable television system in which a central office transmits signals along a coaxial cable to a user unit through a tap. The communication system features a central transmitting/receiving unit for...http://www.google.fr/patents/US5555015?utm_source=gb-gplus-shareBrevet US5555015 - Wireless two way transmission between center and user stations via a relay
Wireless two way transmission between center and user stations via a relay
