Patent ID: 6724827
Filing Date: 2004-04-20
Classification: H04B,H04L

Abstract:
A communications system comprising:first means for transmitting signals from a first transmitter on first and second carrier frequencies, said first carrier frequency being at a first low end of a band and said second carrier being at a second higher end of said band; second means for transmitting signals from a second transmitter on third and fourth carrier frequencies, said third carrier being at said lower end of said band but higher in frequency than said first carrier and said fourth carrier being at said higher end of said band but lower in frequency than said second carrier; and third means for transmitting signals from a third transmitter on fifth and sixth carrier frequencies, said fifth carrier frequency being higher in frequency than said third carrier frequency and said sixth carrier frequency being lower in frequency than said fourth carrier frequency, wherein a first signal is modulated onto said first, third and fifth carriers whereby said first third and fifth carriers comprise a first ensemble.