Blind adaptive equalization of OFDM transmission with insufficient cyclic prefix

We create a new blind equalization method with both batch and adaptive algorithms developed for OFDM systems with insufficient cyclic prefix. Special correlation property of cyclic prefix is exploited for constraint estimation. Then constrained minimum-output-energy (MOE) optimization is applied for blind equalizer estimation. Using shorter cyclic prefix, we can either reduce block size for low complexity or enhance bandwidth efficiency. Simulations demonstrate their superior performance.