2016 The Future of Wireless Network.rar

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the future of wireless networks
2016 The Future of Wireless Network.rar
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<html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta charset="utf-8"> <meta name="generator" content="pdf2htmlEX"> <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> <link rel="stylesheet" href="https://static.pudn.com/base/css/base.min.css"> <link rel="stylesheet" href="https://static.pudn.com/base/css/fancy.min.css"> <link rel="stylesheet" href="https://static.pudn.com/prod/directory_preview_static/6250f4f36caf5961922db522/raw.css"> <script src="https://static.pudn.com/base/js/compatibility.min.js"></script> <script src="https://static.pudn.com/base/js/pdf2htmlEX.min.js"></script> <script> try{ pdf2htmlEX.defaultViewer = new pdf2htmlEX.Viewer({}); }catch(e){} </script> <title></title> </head> <body> <div id="sidebar" style="display: none"> <div id="outline"> </div> </div> <div id="pf1" class="pf w0 h0" data-page-no="1"><div class="pc pc1 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/6250f4f36caf5961922db522/bg1.jpg"><div class="t m0 x1 h2 y1 ff1 fs0 fc0 sc0 ls0 ws0">IEEE Wireless Communications &#8226; February 2016</div><div class="t m0 x2 h3 y2 ff2 fs0 fc0 sc0 ls0 ws0">8</div><div class="t m0 x3 h4 y3 ff3 fs1 fc1 sc0 ls0 ws0">B<span class="_ _0"> </span><span class="fs2">o<span class="_ _0"> </span>o<span class="_ _0"> </span>k<span class="_ _0"> </span></span> <span class="_ _0"> </span>R<span class="_ _0"> </span><span class="fs2">e<span class="_ _0"> </span>v<span class="_ _0"> </span>i<span class="_ _0"> </span>e<span class="_ _0"> </span>w<span class="_ _0"> </span>s</span></div><div class="t m0 x4 h5 y4 ff4 fs3 fc0 sc0 ls0 ws0">E<span class="fs4">ditEd</span> <span class="_ _1"></span><span class="fs4">by</span> <span class="_ _1"></span>S<span class="fs4">atyajayant</span> <span class="_ _1"></span>M<span class="fs4">iSra</span></div><div class="t m0 x2 h6 y5 ff5 fs5 fc0 sc0 ls1 ws0">The Future of Wireless Networks:<span class="_ _2"></span> </div><div class="t m0 x2 h6 y6 ff5 fs5 fc0 sc0 ls2 ws1">Architectures, Protocols and Services, </div><div class="t m0 x2 h6 y7 ff5 fs5 fc0 sc0 ls3 ws0">Edited by Mohesen Guizani, Hsiao-</div><div class="t m0 x2 h6 y8 ff5 fs5 fc0 sc0 ls4 ws2">Hwa Chen and Chonggang Wang;<span class="_ _2"></span> </div><div class="t m0 x2 h6 y9 ff5 fs5 fc0 sc0 ls0 ws3">CRC Press, Taylor and Francis Group; </div><div class="t m0 x2 h6 ya ff5 fs5 fc0 sc0 ls5 ws0">1st Edition; August 4, 2015; ISBN-</div><div class="t m0 x2 h6 yb ff5 fs5 fc0 sc0 ls6 ws1">13:978-1-4822-2094-0; Hardcover, </div><div class="t m0 x2 h6 yc ff5 fs5 fc0 sc0 ls0 ws0">442 pages.</div><div class="t m0 x2 h7 yd ff6 fs6 fc0 sc0 ls7 ws0">Reviewers: Gaurav Panwar and Satya<span class="ls0">-</span></div><div class="t m0 x2 h7 ye ff6 fs6 fc0 sc0 ls0 ws0">jayant Misra</div><div class="t m0 x5 h8 yf ff7 fs6 fc0 sc0 ls8 ws4">As buzz words like Internet of<span class="_ _2"></span> </div><div class="t m0 x2 h8 y10 ff7 fs6 fc0 sc0 ls8 ws5">Things (IoT) and smart grid become<span class="_ _2"></span> </div><div class="t m0 x2 h8 y11 ff7 fs6 fc0 sc0 ls8 ws6">more common and gain popularity in<span class="_ _2"></span> </div><div class="t m0 x2 h8 y12 ff7 fs6 fc0 sc0 ls8 ws7">research fields and the industry, they<span class="_ _2"></span> </div><div class="t m0 x2 h8 y13 ff7 fs6 fc0 sc0 ls9 ws8">present new challenges and open prob<span class="ls0 ws0">-</span></div><div class="t m0 x2 h8 y14 ff7 fs6 fc0 sc0 ls8 ws9">lems. The challenges stem from the<span class="_ _2"></span> </div><div class="t m0 x2 h8 y15 ff7 fs6 fc0 sc0 ls8 wsa">growing network traffic load created<span class="_ _2"></span> </div><div class="t m0 x2 h8 y16 ff7 fs6 fc0 sc0 lsa ws8">by high throughput mobile applications </div><div class="t m0 x2 h8 y17 ff7 fs6 fc0 sc0 lsb ws8">and a growing number of wireless users. </div><div class="t m0 x2 h8 y18 ff7 fs6 fc0 sc0 lsc ws8">With the advent of new concepts and<span class="_ _2"></span> </div><div class="t m0 x2 h8 y19 ff7 fs6 fc0 sc0 ls8 wsb">standards, such as IoT, 5G, and mul<span class="ls0 ws0">-</span></div><div class="t m0 x2 h8 y1a ff7 fs6 fc0 sc0 ls8 wsc">tiple-input multiple-output (MIMO),<span class="_ _2"></span> </div><div class="t m0 x2 h8 y1b ff7 fs6 fc0 sc0 lsd ws8">this is an exciting time in wireless net<span class="ls0 ws0">-</span></div><div class="t m0 x2 h8 y1c ff7 fs6 fc0 sc0 lse ws8">work research. This book aims to look </div><div class="t m0 x2 h8 y1d ff7 fs6 fc0 sc0 ls8 wsd">at these current trends, telescoping<span class="_ _2"></span> </div><div class="t m0 x2 h8 y1e ff7 fs6 fc0 sc0 lsf ws8">into the future. It is divided into three </div><div class="t m0 x2 h8 y1f ff7 fs6 fc0 sc0 ls10 ws8">major sections: architecture, protocols, </div><div class="t m0 x2 h8 y20 ff7 fs6 fc0 sc0 ls8 wse">and enabling technologies, services,<span class="_ _2"></span> </div><div class="t m0 x2 h8 y21 ff7 fs6 fc0 sc0 ls10 ws8">and applications in future wireless net<span class="ls0 ws0">-</span></div><div class="t m0 x2 h8 y22 ff7 fs6 fc0 sc0 ls11 ws8">works. This book acts as a survey of the </div><div class="t m0 x2 h8 y23 ff7 fs6 fc0 sc0 ls8 wsb">latest state of the art in wireless net<span class="ls0 ws0">-</span></div><div class="t m0 x2 h8 y24 ff7 fs6 fc0 sc0 lse ws8">works. The chapters&#8217; authors highlight<span class="_ _2"></span> </div><div class="t m0 x2 h8 y25 ff7 fs6 fc0 sc0 ls8 wsf">the research being done to cope with<span class="_ _2"></span> </div><div class="t m0 x2 h8 y26 ff7 fs6 fc0 sc0 ls1 ws8">demands on current wireless network<span class="_ _2"></span> </div><div class="t m0 x2 h8 y27 ff7 fs6 fc0 sc0 ls12 ws8">infrastructures, and also schemes and<span class="_ _2"></span> </div><div class="t m0 x2 h8 y28 ff7 fs6 fc0 sc0 ls13 ws8">technologies proposed by researchers<span class="_ _2"></span> </div><div class="t m0 x2 h8 y29 ff7 fs6 fc0 sc0 ls13 ws8">to increase efficiency and throughput<span class="_ _2"></span> </div><div class="t m0 x2 h8 y2a ff7 fs6 fc0 sc0 ls14 ws8">of wireless networks, such as smart grid </div><div class="t m0 x2 h8 y2b ff7 fs6 fc0 sc0 ls8 ws10">and mobile cellular networks of the<span class="_ _2"></span> </div><div class="t m0 x2 h8 y2c ff7 fs6 fc0 sc0 ls0 ws0">future.</div><div class="t m0 x5 h8 y2d ff7 fs6 fc0 sc0 ls3 ws11">The first chapter, authored by Ying<span class="_ _2"></span> </div><div class="t m0 x2 h8 y2e ff7 fs6 fc0 sc0 ls8 ws12">Li, starts off by introducing the cur<span class="ls0 ws0">-</span></div><div class="t m0 x2 h8 y2f ff7 fs6 fc0 sc0 ls8 ws13">rent demands on cellular and wire<span class="ls0 ws0">-</span></div><div class="t m0 x2 h8 y30 ff7 fs6 fc0 sc0 ls8 ws14">less networks brought on by new and<span class="_ _2"></span> </div><div class="t m0 x2 h8 y31 ff7 fs6 fc0 sc0 ls8 ws15">upcoming technologies such as 4G,<span class="_ _2"></span> </div><div class="t m0 x2 h8 y32 ff7 fs6 fc0 sc0 ls0 ws16">LTE-Advanced, and Advanced WiMAX </div><div class="t m0 x2 h8 y33 ff7 fs6 fc0 sc0 ls8 ws17">(802.16m), and the need to design<span class="_ _2"></span> </div><div class="t m0 x2 h8 y34 ff7 fs6 fc0 sc0 lsf ws8">future networks to handle the growing </div><div class="t m0 x2 h8 y35 ff7 fs6 fc0 sc0 lsc ws8">demands. Then the chapter describes<span class="_ _2"></span> </div><div class="t m0 x2 h8 y36 ff7 fs6 fc0 sc0 ls15 ws8">the current state of cellular networks,<span class="_ _2"></span> </div><div class="t m0 x2 h8 y37 ff7 fs6 fc0 sc0 ls8 ws18">including the radio access network<span class="_ _2"></span> </div><div class="t m0 x2 h8 y38 ff7 fs6 fc0 sc0 ls0 ws19">(RAN) and Evolved Packet Core (EPC) </div><div class="t m0 x2 h8 y39 ff7 fs6 fc0 sc0 ls8 wsf">network. There is detailed discussion<span class="_ _2"></span> </div><div class="t m0 x2 h8 y3a ff7 fs6 fc0 sc0 ls9 ws8">of the current architecture of both net<span class="ls0 ws0">-</span></div><div class="t m0 x2 h8 y3b ff7 fs6 fc0 sc0 ls8 ws1a">works and the shortcomings thereof.<span class="_ _2"></span> </div><div class="t m0 x2 h8 y3c ff7 fs6 fc0 sc0 ls16 ws8">Then the author outlines ways to mit<span class="ls0 ws0">-</span></div><div class="t m0 x2 h8 y3d ff7 fs6 fc0 sc0 ls17 ws8">igate the shortcomings of networks in<span class="_ _2"></span> </div><div class="t m0 x2 h8 y3e ff7 fs6 fc0 sc0 ls8 ws1b">the future by developing support for<span class="_ _2"></span> </div><div class="t m0 x2 h8 y3f ff7 fs6 fc0 sc0 ls0 ws11">technologies, such as self-organized net<span class="ws0">-</span></div><div class="t m0 x6 h8 y40 ff7 fs6 fc0 sc0 ls8 ws1c">working (SON) and software defined<span class="_ _2"></span> </div><div class="t m0 x6 h8 y41 ff7 fs6 fc0 sc0 ls0 ws8">networks (SDNs). </div><div class="t m0 x7 h8 y42 ff7 fs6 fc0 sc0 ls8 ws1d">The second chapter discusses the<span class="_ _2"></span> </div><div class="t m0 x6 h8 y43 ff7 fs6 fc0 sc0 ls18 ws8">advanced technologies in gigabit wire<span class="ls0 ws0">-</span></div><div class="t m0 x6 h8 y44 ff7 fs6 fc0 sc0 ls13 ws8">less LANs and a detailed overview of<span class="_ _2"></span> </div><div class="t m0 x6 h8 y45 ff7 fs6 fc0 sc0 ls10 ws8">the 802.11ac speci&#64257;cation. The chapter </div><div class="t m0 x6 h8 y46 ff7 fs6 fc0 sc0 ls0 ws8">starts by discussing how 802.11ac began. </div><div class="t m0 x6 h8 y47 ff7 fs6 fc0 sc0 lsf ws8">A brief discussion follows on the main </div><div class="t m0 x6 h8 y48 ff7 fs6 fc0 sc0 ls0 ws1e">features of 802.11ac, such as channeliza<span class="ws0">-</span></div><div class="t m0 x6 h8 y49 ff7 fs6 fc0 sc0 ls19 ws8">tion and the physical layer design. The </div><div class="t m0 x6 h8 y4a ff7 fs6 fc0 sc0 lsc ws8">authors (Michelle Gong, Eldad Pera<span class="ls0 ws0">-</span></div><div class="t m0 x6 h8 y4b ff7 fs6 fc0 sc0 ls10 ws8">hia, Shiwen Mao, and Brian Hart) also </div><div class="t m0 x6 h8 y4c ff7 fs6 fc0 sc0 lsc ws8">discuss channel bonding and medium<span class="_ _2"></span> </div><div class="t m0 x6 h8 y4d ff7 fs6 fc0 sc0 ls8 ws1f">access control (MAC) protection in<span class="_ _2"></span> </div><div class="t m0 x6 h8 y4e ff7 fs6 fc0 sc0 ls3 ws8">802.11ac along with a simulation study </div><div class="t m0 x6 h8 y4f ff7 fs6 fc0 sc0 ls9 ws8">to evaluate the performance. They also </div><div class="t m0 x6 h8 y50 ff7 fs6 fc0 sc0 ls1a ws8">discuss the downlink multi-user MIMO </div><div class="t m0 x6 h8 y51 ff7 fs6 fc0 sc0 ls1b ws8">(DL MU-MIMO) communication tech<span class="ls0 ws0">-</span></div><div class="t m0 x6 h8 y52 ff7 fs6 fc0 sc0 ls0 ws8">nique in 802.11ac.</div><div class="t m0 x7 h8 y53 ff7 fs6 fc0 sc0 ls1c ws20">The third chapter, authored by<span class="_ _2"></span> </div><div class="t m0 x6 h8 y54 ff7 fs6 fc0 sc0 ls16 ws8">Irfan Al-Anbagi, Melike Erol-Kantar<span class="ls0 ws0">-</span></div><div class="t m0 x6 h8 y55 ff7 fs6 fc0 sc0 ls1d ws8">ci, and Hussein Mouftah, is an account </div><div class="t m0 x6 h8 y56 ff7 fs6 fc0 sc0 ls1c ws21">of future wireless sensor networks<span class="_ _2"></span> </div><div class="t m0 x6 h8 y57 ff7 fs6 fc0 sc0 ls16 ws8">(WSNs) for the smart grid. The chap<span class="ls0 ws0">-</span></div><div class="t m0 x6 h8 y58 ff7 fs6 fc0 sc0 ls1e ws8">ter starts off by illustrating the need<span class="_ _2"></span> </div><div class="t m0 x6 h8 y59 ff7 fs6 fc0 sc0 ls1c ws22">for WSNs in the smart grid and the<span class="_ _2"></span> </div><div class="t m0 x6 h8 y5a ff7 fs6 fc0 sc0 ls1f ws8">challenges faced by them in fulfilling<span class="_ _2"></span> </div><div class="t m0 x6 h8 y5b ff7 fs6 fc0 sc0 ls1f ws8">the quality of service (QoS) needs of<span class="_ _2"></span> </div><div class="t m0 x6 h8 y5c ff7 fs6 fc0 sc0 ls17 ws8">smart grid networks. A detailed study<span class="_ _2"></span> </div><div class="t m0 x6 h8 y5d ff7 fs6 fc0 sc0 ls20 ws8">of different implementation strategies </div><div class="t m0 x6 h8 y5e ff7 fs6 fc0 sc0 ls1c ws23">proposed before, such as the Mar<span class="ls0 ws0">-</span></div><div class="t m0 x6 h8 y5f ff7 fs6 fc0 sc0 ls1c ws24">kov-based response surface method<span class="_ _2"></span> </div><div class="t m0 x6 h8 y60 ff7 fs6 fc0 sc0 ls7 ws8">model for 802.15.4-based star topology </div><div class="t m0 x6 h8 y61 ff7 fs6 fc0 sc0 ls15 ws8">and the extension of the above model<span class="_ _2"></span> </div><div class="t m0 x6 h8 y62 ff7 fs6 fc0 sc0 lsa ws25">to contention-based cluster-tree WSNs, </div><div class="t m0 x6 h8 y63 ff7 fs6 fc0 sc0 ls1c wsf">is presented. Then there is a further<span class="_ _2"></span> </div><div class="t m0 x6 h8 y64 ff7 fs6 fc0 sc0 ls13 ws8">extension of the above two models to<span class="_ _2"></span> </div><div class="t m0 x6 h8 y65 ff7 fs6 fc0 sc0 ls1c ws26">include schedule-based cluster-tree<span class="_ _3"></span> </div><div class="t m0 x6 h8 y66 ff7 fs6 fc0 sc0 ls19 ws8">topology. The chapter has comprehen<span class="ls0 ws0">-</span></div><div class="t m0 x6 h8 y67 ff7 fs6 fc0 sc0 ls1c ws27">sive performance tests of the above<span class="_ _3"></span> </div><div class="t m0 x6 h8 y68 ff7 fs6 fc0 sc0 ls21 ws8">three settings in different traffic and<span class="_ _3"></span> </div><div class="t m0 x6 h8 y69 ff7 fs6 fc0 sc0 ls1c ws28">network conditions that might be<span class="_ _3"></span> </div><div class="t m0 x6 h8 y6a ff7 fs6 fc0 sc0 lsa ws8">encountered in smart grid applications. </div><div class="t m0 x7 h8 y6b ff7 fs6 fc0 sc0 ls8 ws29">The fourth chapter, authored by<span class="_ _3"></span> </div><div class="t m0 x6 h8 y6c ff7 fs6 fc0 sc0 lsa ws8">Zhiguo Ding, Kanapathippillai Cuman<span class="ls0 ws0">-</span></div><div class="t m0 x6 h8 y6d ff7 fs6 fc0 sc0 ls8 ws2a">an, Bayan Sharif, and Gui Yun Tian,<span class="_ _3"></span> </div><div class="t m0 x6 h8 y6e ff7 fs6 fc0 sc0 ls8 ws2b">discusses different cooperative strat<span class="ls0 ws0">-</span></div><div class="t m0 x6 h8 y6f ff7 fs6 fc0 sc0 ls8 ws2c">egies for communication in wireless<span class="_ _3"></span> </div><div class="t m0 x6 h8 y70 ff7 fs6 fc0 sc0 ls17 ws8">mobile user networks needed to meet<span class="_ _2"></span> </div><div class="t m0 x6 h8 y71 ff7 fs6 fc0 sc0 ls0 ws2d">the demands generated by high data rate </div><div class="t m0 x6 h8 y72 ff7 fs6 fc0 sc0 ls22 ws8">applications being developed nowadays. </div><div class="t m0 x6 h8 y73 ff7 fs6 fc0 sc0 lsc ws8">The chapter then illustrates different<span class="_ _3"></span> </div><div class="t m0 x6 h8 y74 ff7 fs6 fc0 sc0 ls7 ws8">cooperative strategies for source-desti<span class="ls0 ws0">-</span></div><div class="t m0 x6 h8 y75 ff7 fs6 fc0 sc0 ls19 ws8">nation pairs with multiple relays based </div><div class="t m0 x6 h8 y76 ff7 fs6 fc0 sc0 ls0 ws2e">on available theoretically deduced chan<span class="ws0">-</span></div><div class="t m0 x6 h8 y77 ff7 fs6 fc0 sc0 lsb ws8">nel information at the source node. The </div><div class="t m0 x6 h8 y78 ff7 fs6 fc0 sc0 ls20 ws8">performance of these schemes is eval<span class="ls0 ws0">-</span></div><div class="t m0 x6 h8 y79 ff7 fs6 fc0 sc0 ls23 ws8">uated by comparing outage probability<span class="_ _3"></span> </div><div class="t m0 x6 h8 y7a ff7 fs6 fc0 sc0 ls24 ws8">and diversity-multiplexing trade-off of </div><div class="t m0 x6 h8 y7b ff7 fs6 fc0 sc0 ls0 ws2f">each scheme. Then, among other things, </div><div class="t m0 x6 h8 y7c ff7 fs6 fc0 sc0 ls23 ws8">two cooperative schemes are proposed<span class="_ _3"></span> </div><div class="t m0 x6 h8 y7d ff7 fs6 fc0 sc0 ls0 ws8">for multiple access networks. </div><div class="t m0 x8 h8 y7e ff7 fs6 fc0 sc0 ls25 ws8">The fifth chapter (Jian Zhao, Tony </div><div class="t m0 x9 h8 y7f ff7 fs6 fc0 sc0 ls8 ws30">Quek, and Zhongding Lei) starts by<span class="_ _3"></span> </div><div class="t m0 x9 h8 y80 ff7 fs6 fc0 sc0 ls19 ws8">discussing the incorporation of coordi<span class="ls0 ws0">-</span></div><div class="t m0 x9 h8 y81 ff7 fs6 fc0 sc0 ls26 ws8">nated multipoint (CoMP) transmission </div><div class="t m0 x9 h8 y82 ff7 fs6 fc0 sc0 ls13 ws8">techniques in Third Generation Part<span class="ls0 ws0">-</span></div><div class="t m0 x9 h8 y83 ff7 fs6 fc0 sc0 ls8 ws31">nership Project (3GPP) Long Term<span class="_ _3"></span> </div><div class="t m0 x9 h8 y84 ff7 fs6 fc0 sc0 ls8 ws32">Evolution (LTE)-Advanced releas<span class="ls0 ws0">-</span></div><div class="t m0 x9 h8 y85 ff7 fs6 fc0 sc0 ls8 ws33">es in multi-cell wireless systems and<span class="_ _3"></span> </div><div class="t m0 x9 h8 y86 ff7 fs6 fc0 sc0 ls8 ws34">the challenges faced in the two main<span class="_ _3"></span> </div><div class="t m0 x9 h8 y87 ff7 fs6 fc0 sc0 ls27 ws8">approaches used in CoMP, coordinat<span class="ls0 ws0">-</span></div><div class="t m0 x9 h8 y88 ff7 fs6 fc0 sc0 ls8 ws35">ed scheduling/beamforming (CS/CB)<span class="_ _3"></span> </div><div class="t m0 x9 h8 y89 ff7 fs6 fc0 sc0 ls8 ws10">and joint transmission (JT). The JT<span class="_ _3"></span> </div><div class="t m0 x9 h8 y8a ff7 fs6 fc0 sc0 ls13 ws8">approach is shown to be more attrac<span class="ls0 ws0">-</span></div><div class="t m0 x9 h8 y8b ff7 fs6 fc0 sc0 ls20 ws8">tive for the above application because<span class="_ _3"></span> </div><div class="t m0 x9 h8 y8c ff7 fs6 fc0 sc0 ls3 ws8">multiple base stations (BSs) can trans<span class="ls0 ws0">-</span></div><div class="t m0 x9 h8 y8d ff7 fs6 fc0 sc0 ls13 ws8">mit simultaneously to a single mobile<span class="_ _2"></span> </div><div class="t m0 x9 h8 y8e ff7 fs6 fc0 sc0 ls23 ws8">station (MS), increasing throughput of </div><div class="t m0 x9 h8 y8f ff7 fs6 fc0 sc0 ls1b ws8">the system. The sixth chapter, authored </div><div class="t m0 x9 h8 y90 ff7 fs6 fc0 sc0 ls17 ws8">by Yun Li and Bin Cao, describes the<span class="_ _3"></span> </div><div class="t m0 x9 h8 y91 ff7 fs6 fc0 sc0 ls8 ws36">MAC protocol as it is implemented<span class="_ _3"></span> </div><div class="t m0 x9 h8 y92 ff7 fs6 fc0 sc0 ls27 ws8">in wireless networks. The chapter dis<span class="ls0 ws0">-</span></div><div class="t m0 x9 h8 y93 ff7 fs6 fc0 sc0 ls13 ws8">cusses the function of different MAC<span class="_ _2"></span> </div><div class="t m0 x9 h8 y94 ff7 fs6 fc0 sc0 ls3 ws8">protocols for each wireless networking </div><div class="t m0 x9 h8 y95 ff7 fs6 fc0 sc0 ls28 ws8">standard including IEEE 802.11, IEEE </div><div class="t m0 x9 h8 y96 ff7 fs6 fc0 sc0 ls19 ws8">802.15.4, IEEE 802.15.6, IEEE 802.16, </div><div class="t m0 x9 h8 y97 ff7 fs6 fc0 sc0 ls8 ws1f">and IEEE 802.22. The authors also<span class="_ _3"></span> </div><div class="t m0 x9 h8 y98 ff7 fs6 fc0 sc0 ls8 wsb">illustrate new MAC mechanisms that<span class="_ _3"></span> </div><div class="t m0 x9 h8 y99 ff7 fs6 fc0 sc0 ls27 ws8">have been developed and proposed in<span class="_ _2"></span> </div><div class="t m0 x9 h8 y9a ff7 fs6 fc0 sc0 ls25 ws8">the literature, such as energy-efficient </div><div class="t m0 x9 h8 y9b ff7 fs6 fc0 sc0 ls0 ws8">MAC, cognitive MAC, and relay MAC.</div><div class="t m0 x8 h8 y9c ff7 fs6 fc0 sc0 ls8 ws1a">The seventh chapter, authored by<span class="_ _3"></span> </div><div class="t m0 x9 h8 y9d ff7 fs6 fc0 sc0 lsa ws8">Shaowei Wang, discusses resource allo<span class="ls0 ws0">-</span></div><div class="t m0 x9 h8 y9e ff7 fs6 fc0 sc0 ls0 ws37">cation in cognitive radio (CR) networks. </div><div class="t m0 x9 h8 y9f ff7 fs6 fc0 sc0 lsc ws8">The chapter starts by introducing the<span class="_ _3"></span> </div><div class="t m0 x9 h8 ya0 ff7 fs6 fc0 sc0 ls12 ws8">idea behind CRs, and their advantag<span class="ls0 ws0">-</span></div><div class="t m0 x9 h8 ya1 ff7 fs6 fc0 sc0 ls20 ws8">es and disadvantages. Orthogonal fre<span class="ls0 ws0">-</span></div><div class="t m0 x9 h8 ya2 ff7 fs6 fc0 sc0 ls18 ws8">quency-division multiplexing (OFDM) </div><div class="t m0 x9 h8 ya3 ff7 fs6 fc0 sc0 ls10 ws8">is widely recognized as the most prom<span class="ls0 ws0">-</span></div><div class="t m0 x9 h8 ya4 ff7 fs6 fc0 sc0 ls13 ws8">ising modulation technique due to its<span class="_ _2"></span> </div><div class="t m0 x9 h8 ya5 ff7 fs6 fc0 sc0 ls24 ws8">flexibility in radio resource allocation.<span class="_ _2"></span> </div><div class="t m0 x9 h8 ya6 ff7 fs6 fc0 sc0 lsb ws8">The author discusses the general system </div><div class="t m0 x9 h8 ya7 ff7 fs6 fc0 sc0 ls22 ws8">model of CR networks and then discuss </div><div class="t m0 x9 h8 ya8 ff7 fs6 fc0 sc0 ls8 ws38">three problems faced in CR systems:<span class="_ _3"></span> </div><div class="t m0 x9 h8 ya9 ff7 fs6 fc0 sc0 ls1a ws8">resource allocation for a single second<span class="ls0 ws0">-</span></div><div class="t m0 x9 h8 yaa ff7 fs6 fc0 sc0 ls29 ws8">ary user, allocation for multiple OFDM </div><div class="t m0 x9 h8 yab ff7 fs6 fc0 sc0 ls2a ws8">users, and heterogeneous networks with </div><div class="t m0 x9 h8 yac ff7 fs6 fc0 sc0 ls22 ws8">imperfect spectrum sensing. The author </div><div class="t m0 x9 h8 yad ff7 fs6 fc0 sc0 ls2b ws8">also proposes some solutions and shows </div><div class="t m0 x9 h8 yae ff7 fs6 fc0 sc0 ls0 ws8">their ef&#64257;cacy with simulations. </div><div class="t m0 x8 h8 yaf ff7 fs6 fc0 sc0 ls13 ws8">The eighth chapter starts by intro<span class="ls0 ws0">-</span></div><div class="t m0 x9 h8 yb0 ff7 fs6 fc0 sc0 ls8 ws35">ducing the need for development of<span class="_ _3"></span> </div><div class="t m0 x9 h8 yb1 ff7 fs6 fc0 sc0 ls8 ws39">multicast systems in today&#8217;s growing<span class="_ _3"></span> </div><div class="t m0 x9 h8 yb2 ff7 fs6 fc0 sc0 ls18 ws8">mobile networks. The authors (Yiqing </div><div class="t m0 x9 h8 yb3 ff7 fs6 fc0 sc0 ls23 ws8">Zhou, Hang Liu, Lin Tian, Jinling Shi, </div><div class="t m0 x9 h8 yb4 ff7 fs6 fc0 sc0 ls8 ws3a">and Zhengang Pan) talk about the<span class="_ _3"></span> </div><div class="t m0 x9 h8 yb5 ff7 fs6 fc0 sc0 ls2c ws8">advantages of using multicast systems<span class="_ _2"></span> </div><div class="t m0 x9 h8 yb6 ff7 fs6 fc0 sc0 ls8 ws3b">compared to other schemes such as<span class="_ _3"></span> </div><div class="t m0 x9 h8 yb7 ff7 fs6 fc0 sc0 ls8 ws3c">point-to-multipoint transmission and<span class="_ _3"></span> </div><div class="t m0 x9 h8 yb8 ff7 fs6 fc0 sc0 ls8 ws3d">point-to-point unicast transmission.<span class="_ _3"></span> </div><div class="t m0 x9 h8 yb9 ff7 fs6 fc0 sc0 ls15 ws8">The authors present the challenges in<span class="_ _2"></span> </div><div class="t m0 x9 h8 yba ff7 fs6 fc0 sc0 ls11 ws8">designing multicast systems and present </div><div class="t m0 x9 h8 ybb ff7 fs6 fc0 sc0 lsf ws8">several schemes that each have advan<span class="ls0 ws0">-</span></div></div><div class="pi" data-data='{"ctm":[1.641026,0.000000,0.000000,1.641026,0.000000,0.000000]}'></div></div> </body> </html>
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