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Design and Performance Analysis of Soft Decision-Based Network-Assisted Interference Cancellation and Suppression Scheme |
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| Authors: | Moon Sangmi Choe Hun Chu Myeonghun You Cheolwoo Liu Huaping Kim Jeong-Ho Kim Jihyung Kim Dae Jin Hwang Intae |
| Affiliation: | 1.Department of Electronics and Computer Engineering, Chonnam National University, 300 Yongbongdong Bukgu, Gwangju, 500-757, Republic of Korea ;2.Department of Information and Communications Engineering, Myongji University, San 38-2 Namdong, Cheoingu, Yongin, Gyeonggi-do, 449-728, Republic of Korea ;3.School of Electrical Engineering and Computer Science, Oregon State University, Corvallis, OR, 97331-3211, USA ;4.Department of Electronics Engineering, Ewha Woman’s University, 11-1 Daehyundong, Seodaemungu, Seoul, 120-750, Republic of Korea ;5.Communications and Internet Research Laboratory, Electronics and Telecommunications Research Institute, 218 Gajeong-ro, Yuseong-gu, Daejeon, 305-700, Republic of Korea ; |
| Abstract: | Recently, 3rd Generation Partnership Project (3GPP) has developed a network-assisted interference cancellation and suppression scheme to reduce the effect of interference. In this paper, we propose an advanced receiver based on soft decision to reduce the interference from the neighbor cells. The proposed receiver can suppress and cancel the interference by calculating the unbiased estimation value of the interference signal using the minimum mean square error or the interference rejection combining receiver. The interference signal is updated using soft information expressed by the log-likelihood ratio. We perform the system-level simulation based on 20 MHz bandwidth of a 3GPP LTE-Advanced sidelink system. The simulation results show that the proposed receiver can improve the signal-to-noise-plus-interference ratio, throughput, and spectral efficiency of a conventional system. |
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