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In this paper, we investigate energy efficient uplink power control and subchannel allocation in two-tier femtocell networks. Taking transmit power and circuit power into account, we model the power control and subchannel allocation problem as a supermodular game to maximize energy efficiency of femtocell users. To reduce the cochannel interference from femtousers to neighboring femtocells and macrocells, we introduce a convex pricing scheme to curb their selfish behavior. We decompose the resource allocation problem into two subproblems, that is, a distributed subchannel allocation scheme and a distributed power control scheme to reduce costs and complexity. Simulation results show that the proposed algorithm can improve user utilities significantly, compared with existing power control and subchannel allocation algorithms. <\/jats:p>","DOI":"10.1155\/2014\/658158","type":"journal-article","created":{"date-parts":[[2014,3,13]],"date-time":"2014-03-13T21:03:03Z","timestamp":1394744583000},"page":"658158","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":6,"title":["Game Theory Based Energy-Aware Uplink Resource Allocation in OFDMA Femtocell Networks"],"prefix":"10.1177","volume":"10","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4266-1734","authenticated-orcid":false,"given":"Jun","family":"Zhao","sequence":"first","affiliation":[{"name":"School of Information and Communication Engineering, Beijing Key Laboratory of Network System Architecture and Convergence, Beijing University of Posts and Telecommunications, Beijing 100876, China"}]},{"given":"Wei","family":"Zheng","sequence":"additional","affiliation":[{"name":"School of Information and Communication Engineering, Beijing Key Laboratory of Network System Architecture and Convergence, Beijing University of Posts and Telecommunications, Beijing 100876, China"}]},{"given":"Xiangming","family":"Wen","sequence":"additional","affiliation":[{"name":"School of Information and Communication Engineering, Beijing Key Laboratory of Network System Architecture and Convergence, Beijing University of Posts and Telecommunications, Beijing 100876, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1863-6149","authenticated-orcid":false,"given":"Xiaoli","family":"Chu","sequence":"additional","affiliation":[{"name":"Department of Electronic Engineering, The University of Sheffield, Sheffield S1 3JD, UK"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0236-6482","authenticated-orcid":false,"given":"Haijun","family":"Zhang","sequence":"additional","affiliation":[{"name":"College 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