NDLI: Topology Control with vMIMO Communication in Wireless Sensor Networks

Content Provider	IEEE Xplore Digital Library
Author	Hongli Xu Liusheng Huang Chunming Qiao Xinglong Wang Yu-E Sun
Copyright Year	2002
Abstract	Virtual multi-input-multi-output (or vMIMO) communication is a promising technology to improve the spatial diversity of wireless networks. Using this mechanism, multiple single-antenna nodes can coordinate their transmissions and receptions so as to reduce power consumption. This paper studies the problem of constructing an energy-efficient topology in wireless sensor networks using vMIMO communication. We first define the problem involving joint optimization of vMIMO, partner selection and topology control. As this problem is NP-Complete, a distributed and heuristic algorithm, called vMIMO topology control (VMTC), is proposed to solve this problem. The algorithm uses an improved binary searching method to obtain an initial power assignment. A local competition method is then adopted to implement the partner selection. At last, we reduce the power consumption of each node by using efficient vMIMO modes. Our theoretical analysis show that this algorithm can achieve an approximate performance of O(1). Our simulations show that VMTC helps to decrease the power consumptions by about 32% compared to the existing algorithms.
Starting Page	6328
Ending Page	6339
Page Count	12
File Size	824565
File Format	PDF
ISSN	15361276
Volume Number	12
Issue Number	12
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Topology Power demand Network topology Wireless sensor networks Wireless communication MIMO Receivers wireless sensor networks Topology control virtual MIMO energy efficiency
Content Type	Text
Resource Type	Article
Subject	Applied Mathematics Electrical and Electronic Engineering Computer Science Applications

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