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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | We Nhan Dai Yuan Shen Win, M.Z. |
| Copyright Year | 2014 |
| Description | Author affiliation: Lab. for Inf. & Decision Syst., Massachusetts Inst. of Technol., Cambridge, MA, USA (We Nhan Dai; Yuan Shen; Win, M.Z.) |
| Abstract | Accurate position information enables numerous location-based applications. Wireless network localization is a promising localization technique that permits cooperation among mobile objects to enhance localization services. The allocation of transmitting power for such networks plays a critical role since it determines network lifetime, throughput, as well as the localization accuracy. In this paper, we establish an optimization framework for power allocation in cooperative localization networks. We first show that the optimal solution for the power allocation problem can be obtained by semi-definite programs (SDPs). For implementation in cooperative localization networks, we develop efficient and distributed power allocation strategies via relaxation of the original problem. In particular, we decompose the power allocation problem into infrastructure and cooperation parts. We transform the former into SDPs and derive upper bounds for the localization accuracy of the latter. These bounds enable us to develop efficient distributed strategies. Simulation results show that these strategies can achieve significant performance improvement compared to the unoptimized strategies in terms of localization accuracy. |
| Starting Page | 4969 |
| Ending Page | 4974 |
| File Size | 174200 |
| Page Count | 6 |
| File Format | |
| ISBN | 9781479920037 |
| DOI | 10.1109/ICC.2014.6884108 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2014-06-10 |
| Publisher Place | Australia |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Resource management Niobium Cooperative systems Distance measurement Accuracy Convex functions Linear programming convex optimization Localization cellular networks cooperative techniques power allocation |
| Content Type | Text |
| Resource Type | Article |
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