Advanced Receiver Based on Soft Decision for Interference Suppression and Cancellation in a Sidehaul System

Sangmi Moon, Hun Choe, Myeonghun Chu, Cheolwoo You, Huaping Liu, Jeong Ho Kim, Jihyung Kim, Dae Jin Kim, Intae Hwang

Research output: Contribution to journalArticlepeer-review

Abstract

Recently, the 3rd Generation Partnership Project (3GPP) developed a sidehaul system to cope with rapidly increasing mobile data traffic. However, numerous challenging technical problems remain to be resolved. One of the major problems is interference management between small cells. In this paper, we propose an advanced receiver based on soft decision to reduce the interference from neighboring cells in the sidehaul system. The proposed receiver can suppress and cancel interference by integrating the interference rejection combining technique with successive interference cancellation. The interference signal is updated using soft information expressed by a log-likelihood ratio. We perform a simulation based on the 20-MHz bandwidth of the 3GPP LTE-Advanced technology. Simulation results show that the proposed receiver can achieve a lower error rate and a higher throughput compared to conventional receivers.

Original languageEnglish
Pages (from-to)1241-1263
Number of pages23
JournalWireless Personal Communications
Volume87
Issue number4
DOIs
StatePublished - 1 Apr 2016

Keywords

  • Advanced receiver
  • Interference suppression and cancellation
  • LLR
  • Sidehaul system
  • Soft decision

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