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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Jong-Pil Yoon Woo-Jae Kim Joo-Young Baek Young-Joo Suh |
| Copyright Year | 2008 |
| Description | Author affiliation: Dept. of Comput. Sci. & Eng., Pohang Univ. of Sci. & Technol. (POSTECH), Pohang (Jong-Pil Yoon; Woo-Jae Kim; Joo-Young Baek; Young-Joo Suh) |
| Abstract | In this paper, we define a resource allocation problem focusing on the scheme minimizing energy consumption of subscribers in uplink subframe of the IEEE 802.16 OFDMA systems. In order to clearly formulate the relation between the uplink resource allocation and energy efficiency of subscribers, we use the multiple choice knapsack (MCK) problem, which is proved to be an NP-hard problem. Instead of finding an optimal solution, we seek a suboptimal solution. Based on the problem formulation, we adopt the existing solution of the Multiple Choice Knapsack problem to solve the resource allocation problem. The suboptimal solution adaptively uses the modulation and coding scheme defined in the IEEE 802.16 systems to minimize the required transmission power while guaranteeing QoS. Our simulation results show that the suboptimal algorithm can reduce the energy consumption up to 53% compared to the channel state information (CSI) scheme, which determines the modulation and coding level only considering the channel state information. |
| Starting Page | 2167 |
| Ending Page | 2171 |
| File Size | 325935 |
| Page Count | 5 |
| File Format | |
| ISBN | 9781424416448 |
| ISSN | 15502252 |
| DOI | 10.1109/VETECS.2008.484 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2008-05-11 |
| Publisher Place | Singapore |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Resource management Base stations Energy consumption Bit error rate Energy efficiency Modulation coding Channel state information Quadrature phase shift keying Power control Computer science |
| Content Type | Text |
| Resource Type | Article |
| Subject | Applied Mathematics Electrical and Electronic Engineering Computer Science Applications |
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