Iterative Correction of Phase Noise in Multicarrier Modulation

We investigate a phase noise suppression algorithm which estimates the Fourier components of the phase noise process to eliminate intercarrier interference in addition to standard common phase error correction. With coded transmission the system is equivalent to a serial concatenation of an outer code with the inner channel affected by phase noise. An APP decoder is employed to minimize feedback errors by selecting the most reliable decoded symbols. By iterative MMSE estimation phase noise Fourier components and soft decoding increasingly higher orders of the phase noise process are corrected in the received symbols. Simulations for an AWGN channel, different oscillator linewidths and a static 3 path fading channel with different fading depth illustrate the possible gains.