Adaptive CoMP with Spatial Phase Coding for Interference Mitigation in the Heterogeneous Network

The OFDM technique is robust to the multi-path fading [1]. [...]the OFDM technique has been widely applied to various wireless communication systems [2,3]. Additionally, when the destructive SPC is applied, the magnitude of the superimposed channel coefficient is reduced in the MISO system. [...]the proposed CoMP scheme uses the constructive SPC to increase the SNR of the desired signal and the destructive SPC to reduce the SNR of the interference signal. 3.1. Because the schemes apply the pre-coding not only to the base station but also to the relay, a large number of feedback bits are required. Because the GNC is a hot topic, it can be considered as a research issue of the HetNet system. [...]we plan to study more efficient interference mitigation schemes through the joint transmission (JT) scheme—which is one of the CoMP types—, beamforming scheme, and power allocation for energy efficiency.