A communication system for carrying out communication between a plurality of stations through an electric power line operating in a commercial power frequency band. Spread spectrum modulation of an information signal, employing a pseudorandom code sequence is used at a transmitting station. Spread spectrum...http://www.google.es/patents/US4641322?utm_source=gb-gplus-sharePatente US4641322 - System for carrying out spread spectrum communication through an electric power line
System for carrying out spread spectrum communication through an electric ...
