Method and apparatus for demodulating a multicarrier signal that takes into account an estimate of the channel response and an estimate of distorsion white frequency.

摘要

The invention relates to a process a signal demodulation multicarrier formed by a temporal succession of symbols modulating a plurality of frequencies CARRIERS DURING A GIVEN TIME INTERVAL. According to the invention, the method comprises the following steps: - determining, for each one of said SYMBOLS AND EACH SUCH CARRIERS OF first information H {SUB, N {SUB, 0}, K {SUB, 0}} REPRESENTATIVE A response estimate transmission channel, rEPRESENTING SUB {N, 0} iNDEX transmission time and representing {K SUB, 0} iNDEX OF SUCH CARRIER FREQUENCY; - determining, for each of said time slots A second information {HI} {SUB, SUB N {, 0}} REPRESENTATIVE OF AN ESTIMATE OF WHITE DISTROSION FREQUENCY; And - division of each symbol demodulate and {SUB, N {SUB, 0}, K {SUB, 0}} BY said first information H {SUB, N {SUB, 0}, K {SUB, 0}} AND said second information {HI} {SUB, N {SUB, 0}}, to emit a SIMBOLOESTIMADO C {SUB, N {SUB, 0}, K {SUB, 0}}, taking account of that DETERMINATION OF FIRST AND THE INFORMATION AT LEAST ONE SECOND reference symbol carried by AT LEAST ONE OF FREQUENCY CARRIERS FOR AT SUCH least one of said timeslots.