QoS-aware packet forwarding in MIMO sensor networks: a cross-layer   approach

doi:10.1002/wcm.786

CORC > 北京大学 > 工学院

	QoS-aware packet forwarding in MIMO sensor networks: a cross-layer approach
	Song, Lingyang ; Zhang, Yan ; Yu, Rong ; Yao, Wenqing
刊名	wireless communications mobile computing
	2010
关键词	wireless sensor networks MIMO orthogonal space time block codes symbol error rate quality of service dynamic programming WIRELESS NETWORKS AD HOC ENERGY PERFORMANCE
DOI	10.1002/wcm.786
英文摘要	Multiple-input multiple-output (MIMO) enabled wireless sensor networks (WSNs) are becoming increasingly important since significant performance enhancement can be realized. In this paper, we propose a packet forward strategy for MIMO sensor networks by jointly considering channel coding, rate adaptation, and power allocation. Each sensor node has multiple antennas and uses orthogonal space time block codes (OSTBC) to exploit both spatial and temporal diversities. The objective is to determine the optimal routing path that achieves the minimum symbol error rate (SER) subject to the source-to-destination (S-D) energy consumption constraint. This SER-based quality-of-service (QoS) aware packet forwarding problem is formulated into the framework of dynamic programming (DP). We then propose a low-complexity and near-optimal approach to considerably reduce the computation complexity, which includes state space partition and state aggregation techniques. Simulations indicate that the proposed protocol significantly outperforms traditional algorithms. Further still, the performance gain increases with tighter S-D energy constraint. Copyright (C) 2009 John Wiley & Sons, Ltd.; Computer Science, Information Systems; Engineering, Electrical & Electronic; Telecommunications; SCI(E); EI; 1; ARTICLE; 6; 748-757; 10
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/244126]
专题	工学院
推荐引用方式 GB/T 7714	Song, Lingyang,Zhang, Yan,Yu, Rong,et al. QoS-aware packet forwarding in MIMO sensor networks: a cross-layer approach[J]. wireless communications mobile computing,2010.
APA	Song, Lingyang,Zhang, Yan,Yu, Rong,&Yao, Wenqing.(2010).QoS-aware packet forwarding in MIMO sensor networks: a cross-layer approach.wireless communications mobile computing.
MLA	Song, Lingyang,et al."QoS-aware packet forwarding in MIMO sensor networks: a cross-layer approach".wireless communications mobile computing (2010).