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Minimizing Source-Sum-Power Consumption in Multi-Sensor Single-Relay Networks
- Authors
- Kim, Insook; Kim, Dongwoo
- Issue Date
- Sep-2011
- Publisher
- Institute of Electrical and Electronics Engineers
- Keywords
- Source-sum-power minimization; sensor networks; relaying technique; KKT condition
- Citation
- IEEE Transactions on Communications, v.59, no.9, pp.2362 - 2366
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEEE Transactions on Communications
- Volume
- 59
- Number
- 9
- Start Page
- 2362
- End Page
- 2366
- ISSN
- 0090-6778
- Abstract
- This letter provides an exact and optimal power allocation for a sensor network that consists of multiple sensor-destination pairs and a single relay. The objective of the power allocation is to minimize the sum of transmitting powers by the sensors that have a signal-to-noise-ratio (SNR) constraint. After checking the feasibility of power allocation, an optimal solution is provided using Karush-Kuhn-Tucker (KKT) condition. With numerical investigation, the optimality of the proposed solution is illustratively verified and it is also shown that the extent of reduction in the sum-power consumption achieved by introducing the relay depends on the available relaying power and the number of sources.
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Related Researcher
- Kim, Dong woo
- ERICA 공학대학 (SCHOOL OF ELECTRICAL ENGINEERING)