基于认知无线电的火场应急通信相关技术研究
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摘要
本文首先对目前的公众通信网和专用移动通信网在森林火灾扑救过程中开展通信所存在的不足进行了分析;对采用动态频谱共享技术,利用未使用的和未充分利用的频谱资源提升认知无线电传输信道容量,满足火场应急通信需求的可行性进行了分析;而后基于先前SD-SMSE(软判决频谱调制、频谱编码)框架的研究成果,进一步完善了Overlay、Underlay和混合Overlay/Underlay波形的解析表达式,并分别对其信道容量进行了分析。结果表明采取Overlay与Underlay相结合的混合频谱共享技术,能够同时利用未充分利用的和未使用的频谱资源,最大程度提升信道容量,提高频谱利用率,达到火场应急通信目的。
This paper first analyzes the existing problems of public communication network and private mobile communication network in the process of forest fire fighting; Using dynamic spectrum sharing technology, Utilizing unused and underused spectral regions to enhance the cognitive radio transmission channel capacity, The feasibility of emergency communication in the process of forest fire fighting is analyzed. Then based on the analysis and previous research results of the SD-SMSE framework, analytical expressions of overlay, Underlay and hybrid overlay/underlay waveforms are proposed; And channel capacities are analyzed respectively.The results show that adopt hybrid overlay/underlay spectrum sharing technology, To utilize both unused and underused spectral regions,To maximize channel capacity, To improve spectrum utilization, To achieve emergency communication purposes in the process of forest fire fighting.
This paper first analyzes the existing problems of public communication network and private mobile communication network in the process of forest fire fighting; Using dynamic spectrum sharing technology, Utilizing unused and underused spectral regions to enhance the cognitive radio transmission channel capacity, The feasibility of emergency communication in the process of forest fire fighting is analyzed. Then based on the analysis and previous research results of the SD-SMSE framework, analytical expressions of overlay, Underlay and hybrid overlay/underlay waveforms are proposed; And channel capacities are analyzed respectively.The results show that adopt hybrid overlay/underlay spectrum sharing technology, To utilize both unused and underused spectral regions,To maximize channel capacity, To improve spectrum utilization, To achieve emergency communication purposes in the process of forest fire fighting.
引文
[1]周运伟,应急通信的“短板”及其技术对策[J],2011年全国无线电应用与管理学术会议论文集,电子工业出版社.
[2]P.Kolodzy.Spectrum Policy Task Force:Findings and Recommendations.International Symposium on Advanced Radio Technologies(ISART),March 2003.
[3]M.Mc Henry.Report on Spectrum Occupancy Measurements.Shared Spectrum Company.[Online],Available:http://www.sharedspectrum.com/?section=nsf_summary.
[4]J.Mitola et al.Cognitive Radios:Making Software Radios more Personal.IEEE Personal Communications,vol.6,no.4,August1999.
[5]周小飞,张宏纲,编著.认知无线电原理及应用,北京邮电大学出版社,2007年3月第1版.
[6]R.Rajbanshi,Q.Chen,A.Wyglinski,G.Milden,and J.Evans,“Quantitative comparision of agile modulation technique for cognitive radio tranceivers,”IEEE CCNC,January 2007.
[7]Vasu Chakravarthy,Xue Li,Zhiqiang Wu,Michael A.Temple,Fred Garber,Rajgopal Kannan and Athanasios Vasilakos,“Novel Overlay/Underlay Cognitive Radio Waveforms Using SD-SMSE Framework to Enhance Spectrum Efficiency—Part I:Theoretical Framework and Analysis in AWGN Channel”IEEE TRANSACTIONS ON COMMUNICATIONS,VOL.57,NO.12,DECEMBER 2009.
[8]M.Roberts,M.A.Temple,M.E.Oxley,R.F.Mills,and R.A.Raines,“A spectrally modulated,spectrally encoded analytic framework for carrier interferometry signals,”International Wireless Communications and Mobile Computing Conference(IWCMC),2006.
[9]M.Roberts,M.A.Temple,M.E.Oxley,R.F.Mills,and R.A.Raines,“A general analytic framework for spectrally modulated,spectrally encoded signals,”IEEE Journal of Selected Areas on Signal Processing),2007.
[10]R.Rajbanshi,Q.Chen,A.Wyglinski,G.Milden,and J.Evans,“Quantitative comparision of agile modulation technique for cognitive radio tranceivers,”IEEE CCNC,January 2007.
[11]R.Rajbanshi,Q.Chen,A.Wyglinski,G.Milden,and J.Evans,“Quantitative comparision of agile modulation technique for cognitive radio tranceivers,"in Proc.IEEE Consumer Commun.Networking Conf.,Jan.2007.
[12]Z.Wu and B.Natrajan,“Interference tolerant agile cognitive radio:Maximize channel capacity of cognitive radio,”IEEE CCNC,January 2007.
[2]P.Kolodzy.Spectrum Policy Task Force:Findings and Recommendations.International Symposium on Advanced Radio Technologies(ISART),March 2003.
[3]M.Mc Henry.Report on Spectrum Occupancy Measurements.Shared Spectrum Company.[Online],Available:http://www.sharedspectrum.com/?section=nsf_summary.
[4]J.Mitola et al.Cognitive Radios:Making Software Radios more Personal.IEEE Personal Communications,vol.6,no.4,August1999.
[5]周小飞,张宏纲,编著.认知无线电原理及应用,北京邮电大学出版社,2007年3月第1版.
[6]R.Rajbanshi,Q.Chen,A.Wyglinski,G.Milden,and J.Evans,“Quantitative comparision of agile modulation technique for cognitive radio tranceivers,”IEEE CCNC,January 2007.
[7]Vasu Chakravarthy,Xue Li,Zhiqiang Wu,Michael A.Temple,Fred Garber,Rajgopal Kannan and Athanasios Vasilakos,“Novel Overlay/Underlay Cognitive Radio Waveforms Using SD-SMSE Framework to Enhance Spectrum Efficiency—Part I:Theoretical Framework and Analysis in AWGN Channel”IEEE TRANSACTIONS ON COMMUNICATIONS,VOL.57,NO.12,DECEMBER 2009.
[8]M.Roberts,M.A.Temple,M.E.Oxley,R.F.Mills,and R.A.Raines,“A spectrally modulated,spectrally encoded analytic framework for carrier interferometry signals,”International Wireless Communications and Mobile Computing Conference(IWCMC),2006.
[9]M.Roberts,M.A.Temple,M.E.Oxley,R.F.Mills,and R.A.Raines,“A general analytic framework for spectrally modulated,spectrally encoded signals,”IEEE Journal of Selected Areas on Signal Processing),2007.
[10]R.Rajbanshi,Q.Chen,A.Wyglinski,G.Milden,and J.Evans,“Quantitative comparision of agile modulation technique for cognitive radio tranceivers,”IEEE CCNC,January 2007.
[11]R.Rajbanshi,Q.Chen,A.Wyglinski,G.Milden,and J.Evans,“Quantitative comparision of agile modulation technique for cognitive radio tranceivers,"in Proc.IEEE Consumer Commun.Networking Conf.,Jan.2007.
[12]Z.Wu and B.Natrajan,“Interference tolerant agile cognitive radio:Maximize channel capacity of cognitive radio,”IEEE CCNC,January 2007.