Patent ID: 6366554
Filing Date: 2002-04-02
Classification: H04L

Abstract:
A multi-carrier transmission system in which channel information is transmitted between two transceivers using a plurality of sub-carriers, characterised in that each sub-carrier, or symbol, has a parameter associated therewith, and in that said transceivers are configured to transmit said channel information as a sequence of a number of groups, in which each of said groups contains information concerning the number of adjacent sub-carriers which have the same value as said parameter, together with the actual value of the parameter, wherein the number of information bits required to be transmitted is substantially reduced in comparison to known systems, thereby effecting a saving in transmission capacity, and wherein said parameter has a plurality of discrete values, in that the number of information bits transmitted will be reduced ifP(m+n)<NÃ—n where P is the number of groups, the number of discrete values of said parameter is >2nâˆ’1, but &lE;2n, and the number of subcarriers N is >2mâˆ’1, but &lE;2m.