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An interference alignment based precoder design using channel statistics for OFDM systems with insufficient cyclic prefix

This paper proposes an interference alignment (IA) based precoder design for OFDM with insufficient cyclic prefix (CP) when only the statistics of channel coefficients is known at the transmitter. This precoding not only performs the inter-block interference (IBI) separation and elimination as in our previously proposed channel independent IA based precoding schemes, but also minimizes the MSE in a linear MMSE receiver and therefore improves the BER performance.