CoMP impairments: Modeling, Impact and Compensation
16 January 2014
Base station cooperation is a powerful technique for eliminating inter-cell interference and enhancing spectral efficiency in cellular networks. However, impairment effects due to channel time variance, channel estimation, feedback quantization as well as imperfect carrier and sampling synchronization among base stations are limiting the potential gains. This paper provides a unifying framework for modeling these impairments in cooperative multi-user multi-cellular systems and analyzing the inter-user interference and its impact onto the spectral efficiency. It is shown how critical those impairments are and how channel prediction and techniques for synchronization of base stations can compensate degradation effects and enhance system throughput.
