PILOT-AIDED CHANNEL ESTIMATION TECHNIQUE IN UPLINK OFDMA SYSTEM

摘要

The other pilot designing method in the invention, a plurality of data symbol periods and time to configure a plurality of pilot symbol periods are arranged intermittently - in an uplink OFDMA system that communicates using a frame consisting of the frequency grid, associated to the frame the number of terminal and as divided into blocks of equal size, each block is assigned to the terminal, a specific time is assigned to pilot terminals adjacent to each other - thereby sharing frequency grid. The pilot designing method of the present invention can maximize the channel estimation efficiency, while maintaining the total number of the pilot sub-carrier pilot subcarriers by well as using the pilot sub-carriers of the neighboring adjacent transport blocks within a transport block allocated to each user in the uplink OFDM frames . ; An orthogonal frequency division multiple access (OFDMA), the pilot channel, UL