通信原理--樊昌信版-各章重点

技术官员村位于位于亚运城东部，主干道二以东石楼涌以西的地块，占地面积、m2，总建筑面积、m2，共包括地下室南区、地下室北区、地上部分1栋～12栋、服务中心、室外工程等多个单体工程。其中住宅面积m2，共12栋，1～7栋建筑层数为11层，8～12栋11层（局部复式顶层），首层局部架空，布置公建配套设施。integratedenergy,chemicalsandtextileYibincity,arethethreecorepillarsoftheindustry.In2014,thewuliangyebrandvalueto73.58billionyuan,thecity'sliquorindustrysliptostabilise.Promotingdeepdevelopmentofintegratedenergy,advancedequipmentmanufacturingindustry,changningdistrict,shalegasproductioncapacityreached277millioncubicmetres,builtthecountry'sfirstindependenthigh-yieldwellsandpipelinesinthefirstsection,theleadinfactoryproductionandsupplytothepopulation.2.1-3GDPgrowthfigure2.1-4Yibin,Yibincity,Yibincity,fiscalrevenuegrowth2.1.4topographyterrainoverallisSouthwest,North-EasternState.Lowmountainsandhillsinthecitylandscapeasthemainridge-and-Valley,pingbasmallfragmentednaturepictureforwaterandthesecondlandofthesevenhills.236metersto2000metersabovesealevelinthecity,lowmountain,46.6%hills45.3%,pingbaonly8.1%.2.1.5developmentofYibinlandscapesanddistinctivefeatureinthecenterofthecity,withlimitations,andspatialstructureoftypicalzonalgroup,2012-citiesinbuildingwithanareaofabout76.2km2.Fromcity-buildingsituation,oldtown-theSouthBankCenterconstructionislaggingbehind,disintegrationoftheoldcityisslow,optimizationandupgrading,qualitypublicserviceresourcesarestillheavilyconcentratedintheoldtowntogether.SouthbankCentrehasnotbeenformed,functionsoftheserviceareaspaceismissing.Meanwhile,peripheralgroupcentresservicewasweakandinadequateaccountingforcitydevelopment,suspiciouspatterncouldnotbeformed.Asregardstransport,withtheoutwardexpansionofcities,citieshavebeenexpanding,centripetalcitytrafficorganizationhasnotchanged,integratedenergy,chemicalsandtextileYibincity,arethethreecorepillarsoftheindustry.In2014,thewuliangyebrandvalueto73.58billionyuan,thecity'sliquorindustrysliptostabilise.Promotingdeepdevelopmentofintegratedenergy,advancedequipmentmanufacturingindustry,changningdistrict,shalegasproductioncapacityreached277millioncubicmetres,builtthecountry'sfirstindependenthigh-yieldwellsandpipelinesinthefirstsection,theleadinfactoryproductionandsupplytothepopulation.2.1-3GDPgrowthfigure2.1-4Yibin,Yibincity,Yibincity,fiscalrevenuegrowth2.1.4topographyterrainoverallisSouthwest,North-EasternState.Lowmountainsandhillsinthecitylandscapeasthemainridge-and-Valley,pingbasmallfragmentednaturepictureforwaterandthesecondlandofthesevenhills.236metersto2000metersabovesealevelinthecity,lowmountain,46.6%hills45.3%,pingbaonly8.1%.2.1.5developmentofYibinlandscapesanddistinctivefeatureinthecenterofthecity,withlimitations,andspatialstructureoftypicalzonalgroup,2012-citiesinbuildingwithanareaofabout76.2km2.Fromcity-buildingsituation,oldtown-theSouthBankCenterconstructionislaggingbehind,disintegrationoftheoldcityisslow,optimizationandupgrading,qualitypublicserviceresourcesarestillheavilyconcentratedintheoldtowntogether.SouthbankCentrehasnotbeenformed,functionsoftheserviceareaspaceismissing.Meanwhile,peripheralgroupcentresservicewasweakandinadequateaccountingforcitydevelopment,suspiciouspatterncouldnotbeformed.Asregardstransport,withtheoutwardexpansionofcities,citieshavebeenexpanding,centripetalcitytrafficorganizationhasnotchanged,第一章1、通信系统的模型（了解图1-11-41-5）2、数字通信的特点（掌握）①抗干扰能力强，且噪声不积累②传输差错可控③便于用现代数字信号处理技术对数字信息进行处理、变换、存储④易于集成，使通信设备微型化，重量轻⑤易于加密处理，且保密性好⑥需要较大的传输带宽3、平均信息量的简单计算（选、填）221loglog()()()IPxbitPx21()()log()(/niiiHxPxPxbit符号）当信息源的每个符号等概率出现时，信息源具有最大熵：2()logn(/Hxbit符号）4、码长、码元速率、信息速率、频带利用率定义、单位、计算码元速率RB：每秒传输码元的数目，单位B二进制与N进制码元速率转换关系：RB2=RBNlog2N(B)信息速率：每秒钟传递的信息量，单位bit/s在N进制下Rb=RBNlog2N(bit/s)第二章1、随机过程的概念、分布函数、概率密度函数的定义（理解P36-37）均值：1[()](,)()Etxfxtdxat方差：2222[()]{()()}[()][()]()DtEtatEtatt自相关函数：1212(,)[()()]RttEtt协方差函数：121122(,){[()()][{()()]}BttEtatEtat2、高斯过程的一维概率密度函数（掌握P46-47）221()f()exp()22xax误差函数：202()2(2)1xzerfxedzx互补误差函数：22()1()22(2)zxerfcxerfxedzx3、高斯白噪声及带限噪声的定义、平均功率的计算（掌握P57-60）白噪声：0()()(/z)2nnPffWH自相关函数：0()()2nR低通白噪声：020()HnffnPf其他自相关函数：0sin2()=n2HHHfRff带通白噪声：0ff2220()ccnBBfnPf其他自相关函数：0sin()=ncos2cBRBfB平均功率：N=0nB4、噪声的功率谱密度与相关函数的关系线性系统输出/输入功率谱密度的关系计算（掌握P42-44P48-49）平稳过程的功率谱密度()Pf与其自身相关函数()R是一对傅里叶变换关系，即()()jPfRed()=()jRPfedf或()()jPRed1()=()2jRPed平稳过程的总功率：(0)=()RPfdf输出过程0()t的均值：0()]()(0)tahdH输出过程0()t的自相关函数：0120()()RttR技术官员村位于位于亚运城东部，主干道二以东石楼涌以西的地块，占地面积、m2，总建筑面积、m2，共包括地下室南区、地下室北区、地上部分1栋～12栋、服务中心、室外工程等多个单体工程。其中住宅面积m2，共12栋，1～7栋建筑层数为11层，8～12栋11层（局部复式顶层），首层局部架空，布置公建配套设施。integratedenergy,chemicalsandtextileYibincity,arethethreecorepillarsoftheindustry.In2014,thewuliangyebrandvalueto73.58billionyuan,thecity'sliquorindustrysliptostabilise.Promotingdeepdevelopmentofintegratedenergy,advancedequipmentmanufacturingindustry,changningdistrict,shalegasproductioncapacityreached277millioncubicmetres,builtthecountry'sfirstindependenthigh-yieldwellsandpipelinesinthefirstsection,theleadinfactoryproductionandsupplytothepopulation.2.1-3GDPgrowthfigure2.1-4Yibin,Yibin