A network coding based interference cancelation scheme for wireless ad hoc networks | |
Chen, Chen ; Bai, Lin ; Cai, Kai ; He, Jianhua ; Xiang, Haige | |
刊名 | wireless communications mobile computing |
2010 | |
关键词 | wireless ad hoc networks wireless network coding interference cancelation cross-layer design |
DOI | 10.1002/wcm.817 |
英文摘要 | The performance of wireless networks is limited by multiple access interference (MA!) in the traditional communication approach where the interfered signals of the concurrent transmissions are treated as noise. In this paper, we treat the interfered signals from a new perspective on the basis of additive electromagnetic (EM) waves and propose a network coding based interference cancelation (NCIC) scheme In the proposed scheme, adjacent nodes can transmit simultaneously with careful scheduling; therefore, network performance will not be limited by the MAI. Additionally we design a space segmentation method for general wireless ad hoc networks, which organizes network into clusters with regular shapes (e.g., square and hexagon) to reduce the number of relay nodes. The segmentation method works with the scheduling scheme and can help achieve better scalability and reduced complexity. We derive accurate analytic models for the probability of connectivity between two adjacent cluster heads which is important for successful information relay. We proved that with the proposed NCIC scheme, the transmission efficiency can be improved by at least 50% for general wireless networks as compared to the traditional interference avoidance schemes. Numeric results also show the space segmentation is feasible and effective Finally we propose and discuss a method to implement the NCIC scheme in a practical orthogonal frequency division multiplexing (OFDM) communications networks. Copyright (C) 2009 John Wiley & Sons, Ltd.; Computer Science, Information Systems; Engineering, Electrical & Electronic; Telecommunications; SCI(E); EI; 1; ARTICLE; 8; 1017-1032; 10 |
语种 | 英语 |
内容类型 | 期刊论文 |
源URL | [http://ir.pku.edu.cn/handle/20.500.11897/152741] |
专题 | 信息科学技术学院 |
推荐引用方式 GB/T 7714 | Chen, Chen,Bai, Lin,Cai, Kai,et al. A network coding based interference cancelation scheme for wireless ad hoc networks[J]. wireless communications mobile computing,2010. |
APA | Chen, Chen,Bai, Lin,Cai, Kai,He, Jianhua,&Xiang, Haige.(2010).A network coding based interference cancelation scheme for wireless ad hoc networks.wireless communications mobile computing. |
MLA | Chen, Chen,et al."A network coding based interference cancelation scheme for wireless ad hoc networks".wireless communications mobile computing (2010). |
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