Improved ICI Self-Cancellation Scheme for OFDM System Based on Symbol Transform

Based on the existing intercarrier interference (ICI) self-cancellation scheme, we propose an improved scheme using symbol transform for canceling the ICI effectively. This scheme builds a symbol transform matrix as platform to extend the existing scheme and increase flexibility of design. Through the optimal design of transform matrix, compared with the existing scheme, the improved scheme can reduce ICI more effectively and broaden the applicable frequency offset scope. Simulations show the validity of the scheme.