QoS-driven power control for energy harvesting fading multiple-access channels
This paper investigates the energy harvesting fading multiple-access channels, where the transmitters harvest random amounts of energy from the environment and the data transmissions are subject to statistical quality of service (QoS) constraints in the form of limitations on the buffer overflow pro...
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| Published in: | International Conference on Wireless Communications and Signal Processing pp. 1 - 7 |
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| Main Authors: | , |
| Format: | Conference Proceeding |
| Language: | English |
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IEEE
01.10.2017
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| ISSN: | 2472-7628 |
| Online Access: | Get full text |
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| Abstract | This paper investigates the energy harvesting fading multiple-access channels, where the transmitters harvest random amounts of energy from the environment and the data transmissions are subject to statistical quality of service (QoS) constraints in the form of limitations on the buffer overflow probability. With the assumption that the channel state information (CSI) and harvested energy in all time slots are known at the transmitters, the point-to-point link is first revisited to obtain the effective capacity expression with the optimal offline power control policy. Then, regarding the transmissions with superposition coding, the conditions that the offline optimal power control policies must satisfy for a given decoding order strategy are determined. A suboptimal online power control policy is proposed. It is shown that the proposed power control policies can achieve performance close to the optimal one achieved with average power constraints only in case of infinite energy buffer. |
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| AbstractList | This paper investigates the energy harvesting fading multiple-access channels, where the transmitters harvest random amounts of energy from the environment and the data transmissions are subject to statistical quality of service (QoS) constraints in the form of limitations on the buffer overflow probability. With the assumption that the channel state information (CSI) and harvested energy in all time slots are known at the transmitters, the point-to-point link is first revisited to obtain the effective capacity expression with the optimal offline power control policy. Then, regarding the transmissions with superposition coding, the conditions that the offline optimal power control policies must satisfy for a given decoding order strategy are determined. A suboptimal online power control policy is proposed. It is shown that the proposed power control policies can achieve performance close to the optimal one achieved with average power constraints only in case of infinite energy buffer. |
| Author | Jingwen Han Deli Qiao |
| Author_xml | – sequence: 1 surname: Jingwen Han fullname: Jingwen Han email: 51151214025@ecnu.cn organization: Sch. of Inf. Sci. & Technol., East China Normal Univ., Shanghai, China – sequence: 2 surname: Deli Qiao fullname: Deli Qiao email: dlqiao@ce.ecnu.edu.cn organization: Sch. of Inf. Sci. & Technol., East China Normal Univ., Shanghai, China |
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| Snippet | This paper investigates the energy harvesting fading multiple-access channels, where the transmitters harvest random amounts of energy from the environment and... |
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| SubjectTerms | Decoding Energy harvesting Fading channels Power control Quality of service Receivers Transmitters |
| Title | QoS-driven power control for energy harvesting fading multiple-access channels |
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