Interference-Aware Interference Cancellation Using Soft Feedback via Network Assistance

This paper proposes an interference-aware interference cancellation (IAIC) algorithm that effectively mitigates inter-cell interference. In modern cellular networks, a serving signal could be disrupted due to interfering signals transmitted from neighbor cells in proximity to the serving cell. In order to overcome the disturbance of interfering signals, the recent 3GPP standard specification has explored a way of using network assistance, called network-assisted interference cancellation and suppression (NAICS). IAIC is in the same research direction of NAICS such that decoding an interfering signal as well as a serving signal is enabled via network assistance. Hence, IAIC is able to decode both signals as in a multiple access channel (MAC). However, a serving signal is only of concern while all decoded signals are of concern in a MAC. Using this characteristic, IAIC can be implemented as a practical solution. This paper demonstrates that the performance of IAIC is superior as well as requiring less complexity.