Date Added: Aug 2009
In this paper, the pilot design aiming at mitigating the inter-cell interference in MIMO OFDM systems is addressed. The authors first compute the mean square error of the frequency domain LS joint channel estimation with the consideration of interfering cell. They, then overview the optimal pilot sequences within a cell, which can cancel the intra-cell multiple access interference. Based on the mean square error and variation coefficient, they propose two conditions for the pilot design to mitigate the inter-cell interference.