... Abstract of thesis entitled “A Study of Channel Estimation for OFDM Systems and System Capacity for MIMO-OFDM Systems” Submitted by Zhou Wen For the degree of Doctor of Philosophy at the ... inserted into each OFDM symbol. It is assumed that the number of the total pilot subcarriers in each OFDM symbol is1PN and the inserting gap is R . Therefore, the set of the indexes of pilot subcarriers,β, ... stands for the index of time axis in unit of sample point, for each symbol. And,(, )pMSThinis the MST estimation of h(i, n) . But, for the last M2 OFDM symbols, ICI is considered and the...