Enhanced single carrier iterative interference cancellation frequency domain equalization

We propose an enhanced iterative interference cancellation (IIC) scheme for single carrier frequency domain equalization without cyclic prefix extension. By reduction of error propagation, our scheme significantly improves BER performance, especially under mobile channel conditions whilst keeping the computational complexity low for efficient implementation. The latter is achieved by explicitly excluding channel decoding in the IIC loop and applying the equalization step completely in the frequency domain. We evaluate the enhanced IIC for fast Rayleigh fading channels and use the FFT block size as a design factor to reduce Doppler induced inter-carrier interference. The above considerations allow for a competitive trade-off between performance and computational complexity.