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Specifically, in the next generation of mobile communication 5G, cloud computing is supposed to be applied to radio access network. In cloud radio access network (Cloud-RAN), the traditional base station is divided into two parts, that is, remote radio heads (RRHs) and base band units (BBUs). RRHs are geographically distributed and densely deployed, so as to achieve high data rate and low latency. However, the ultradense deployment inevitably deteriorates spectrum efficiency due to the severer intercell interference among RRHs. In this paper, the downlink spectrum efficiency can be improved through the cooperative transmission based on forming the coalitions of RRHs. We formulate the problem as a coalition formation game in partition form. In the process of coalition formation, each RRH can join or leave one coalition to maximize its own individual utility while taking into account the coalition utility at the same time. Moreover, the convergence and stability of the resulting coalition structure are studied. The numeric simulation result demonstrates that the proposed approach based on coalition formation game is superior to the noncooperative method in terms of the aggregate coalition utility.<\/jats:p>","DOI":"10.1155\/2016\/3068732","type":"journal-article","created":{"date-parts":[[2016,7,18]],"date-time":"2016-07-18T17:20:08Z","timestamp":1468862408000},"page":"1-11","source":"Crossref","is-referenced-by-count":3,"title":["A Game-Theoretical Approach for Spectrum Efficiency Improvement in Cloud-RAN"],"prefix":"10.1155","volume":"2016","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7457-841X","authenticated-orcid":true,"given":"Zhuofu","family":"Zhou","sequence":"first","affiliation":[{"name":"School of Information Science and Engineering, Central South University, Changsha 410083, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6269-6929","authenticated-orcid":true,"given":"Jun","family":"Peng","sequence":"additional","affiliation":[{"name":"School of Information Science and Engineering, Central South University, Changsha 410083, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2263-6785","authenticated-orcid":true,"given":"Xiaoyong","family":"Zhang","sequence":"additional","affiliation":[{"name":"School of Information Science and Engineering, Central South University, Changsha 410083, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1114-8030","authenticated-orcid":true,"given":"Kaiyang","family":"Liu","sequence":"additional","affiliation":[{"name":"School of Information Science and Engineering, Central South University, Changsha 410083, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9122-1065","authenticated-orcid":true,"given":"Fu","family":"Jiang","sequence":"additional","affiliation":[{"name":"School of Information Science and Engineering, Central South University, Changsha 410083, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","reference":[{"year":"2013","key":"1"},{"key":"2","doi-asserted-by":"publisher","DOI":"10.1109\/access.2014.2360555"},{"key":"3","doi-asserted-by":"publisher","DOI":"10.1109\/MCOM.2015.7120046"},{"key":"4","doi-asserted-by":"publisher","DOI":"10.1109\/msp.2014.2334952"},{"key":"5","doi-asserted-by":"publisher","DOI":"10.1109\/mcom.2014.6736745"},{"key":"7","doi-asserted-by":"publisher","DOI":"10.1109\/jsac.2012.120504"},{"key":"8","doi-asserted-by":"publisher","DOI":"10.1109\/twc.2012.070912.111383"},{"key":"9","doi-asserted-by":"publisher","DOI":"10.1109\/tbc.2012.2199598"},{"year":"2012","key":"10"},{"key":"11","doi-asserted-by":"publisher","DOI":"10.1109\/msp.2009.000000"},{"key":"12","doi-asserted-by":"publisher","DOI":"10.1109\/MSP.2009.000000"},{"key":"13","doi-asserted-by":"publisher","DOI":"10.1109\/msp.2009.933370"},{"key":"17","doi-asserted-by":"publisher","DOI":"10.1109\/tmc.2012.196"},{"key":"18","doi-asserted-by":"publisher","DOI":"10.1109\/TWC.2014.032514.130942"},{"key":"20","doi-asserted-by":"publisher","DOI":"10.1109\/TWC.2009.080522"},{"key":"21","doi-asserted-by":"publisher","DOI":"10.1006\/game.2001.0877"},{"key":"23","doi-asserted-by":"publisher","DOI":"10.2307\/2312585"}],"container-title":["Mobile Information Systems"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/downloads.hindawi.com\/journals\/misy\/2016\/3068732.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/downloads.hindawi.com\/journals\/misy\/2016\/3068732.xml","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/downloads.hindawi.com\/journals\/misy\/2016\/3068732.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2016,7,26]],"date-time":"2016-07-26T09:47:21Z","timestamp":1469526441000},"score":1,"resource":{"primary":{"URL":"http:\/\/www.hindawi.com\/journals\/misy\/2016\/3068732\/"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2016]]},"references-count":17,"alternative-id":["3068732","3068732"],"URL":"https:\/\/doi.org\/10.1155\/2016\/3068732","relation":{},"ISSN":["1574-017X","1875-905X"],"issn-type":[{"type":"print","value":"1574-017X"},{"type":"electronic","value":"1875-905X"}],"subject":[],"published":{"date-parts":[[2016]]}}}