A Novel Precoder Design for Coordinated Multipoint Downlink Transmission
15 May 2011
Coordinated multipoint (CoMP) processing is regarded as an enabling technique in Long Term Evolution (LTE)Advanced to improve both the cell average and cell-edge spectral efficiency (SE). In this paper, we propose a novel precoder design algorithm based on polar decomposition (PD) for non-coherent joint processing CoMP (NCJP-CoMP) in order to enhance the celledge performance, when considering the cost of the backhaul and signaling of the system. Compared with non-CoMP scheme and the QR decomposition (QRD) based NCJP-CoMP solution, the NCJP-CoMP scheme based on PD aided precoder is capable of reaping cell-edge SE gains of 10% and 3%, respectively.