Patent ID: 8036190

Claim:
A method of data communication in a multi-user, multi-carrier wireless communication system, the method comprising: identifying a resource region including a plurality of symbols; allocating pilot signals to the resource region; identifying pilot-free symbols free of the pilot signals in the plurality of symbols; arranging sacrifice carriers for a first region of a group of symbols in the pilot-free symbols at a first density for a first communication station; arranging sacrifice carriers for a second region of the group of symbols in the pilot-free symbols at a second density for a second communication station; allocating data to first carriers in the first region of the group of symbols in the pilot-free symbols; and allocating data to second carriers in the second region of the group of symbols in the pilot-free symbols, wherein at least one of the first carriers or at least one of the second carriers in a first symbol of the group of symbols includes information regarding at least one of a coding rate, modulation scheme or pilot density of at least one second symbol of the group of symbols following the first symbol in the pilot-free symbols, wherein the first communication station is mobile with respect to an access communication station at a first relative speed and the second communication station is mobile with respect to the access communication station at a second relative speed, and wherein the first density of sacrifice carriers is greater than the second density of sacrifice carriers if the first relative speed is greater than the second relative speed.