Exploiting Phase Noise Properties in the Design of MIMO-OFDM Receivers

Phase noise (PN) is a serious challenge for multi- carrier systems as it can drastically decrease the system performance. In order to tackle this problem, recent contributions propose iterative approaches which compensate both the common phase error and the intercarrier interference (ICI) resulting from PN. However, the fact that the ICI is not Gaussian distributed has so far not been taken into account in the calculation of detector soft output. Furthermore, the ICI is typically approximated by a truncated Fourier series, implicitly assuming a periodicity of the PN trajectory - which is in general not the case. In this paper we will address these problems and show that taking the PN properties properly into account allows to significantly improve the system performance.