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Soft Decision based Advanced Receiver to Suppress and Cancel the Interference in D2D Communication Underlaying Cellular Network
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 Title & Authors
Soft Decision based Advanced Receiver to Suppress and Cancel the Interference in D2D Communication Underlaying Cellular Network
Moon, Sangmi; Chu, Myeonghun; Kim, Hanjong; Kim, Daejin; Kim, Cheolsung; Hwang, Intae;
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Cellular Network assisted device-to-device (D2D) communication has been growing to reduce the overload of eNodeB and mitigate the frequency shortage. However, by sharing the uplink frequency resource with the cellular network, the interference between cellular and D2D is increased. In this paper, we propose the advanced receiver based on soft decision to reduce the interference between cellular and D2D. The proposed receiver can suppress and cancel the interference by calculating the unbiased estimation value of interference signal using minimum mean square error (MMSE) or interference rejection combing (IRC) receiver. The interference signal is updated using soft information expressed by log-likelihood ratio (LLR). We perform a system level simulation based on the 20-MHz bandwidth of the 3GPP LTE-A system. Simulation results show that the proposed receiver can improve SINR, throughput and spectral efficiency compared to conventional receivers.
Advanced receiver;Device-to-Device (D2D);LLR;Soft Decision;
 Cited by
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