The book you’re holding, physically or electronically, is the result of a very interesting, challenging but also rewarding research project. The research was carried out in different contexts and cooperations but it was centered around the following question: how can we make the RF transmitters of our modern com- munication systems (WiFi, GSM, LTE, and so on) more flexible and more efficient at the same time.
标签： Continuous-Time Front-Ends Digital
上传时间： 2020-05-27
上传用户：shancjb
Emerging technologies such as WiFi and WiMAX are profoundly changing the landscape of wireless broadband. As we evolve into future generation wireless networks, a primary challenge is the support of high data rate, integrated multi- media type traffic over a unified platform. Due to its inherent advantages in high-speed communication, orthogonal frequency division multiplexing (OFDM) has become the modem of choice for a number of high profile wireless systems (e.g., DVB-T, WiFi, WiMAX, Ultra-wideband).
标签： OFDM-Based Broadband Networks Wireless
上传时间： 2020-05-31
上传用户：shancjb
This book provides the essential design techniques for radio systems that operate at frequencies of 3 MHz to 100 GHz and which will be employed in the telecommunication service. We may also call these wireless systems, wireless being synonymous with radio, Telecommunications is a vibrant indus- try, particularly on the ‘‘radio side of the house.’’ The major supporter of this upsurge in radio has been the IEEE and its 802 committees. We now devote Ž . an entire chapter to wireless LANs WLANs detailed in IEEE 802.11. We also now have subsections on IEEE 802.15, 802.16, 802.20 and the wireless Ž . Ž metropolitan area network WMAN . WiFi, WiMax,, and UWB ultra wide- . band are described where these comparatively new radio specialties are demonstrating spectacular growth.
标签： Telecommunication Design System Radio for
上传时间： 2020-06-01
上传用户：shancjb
Convergence between the two largest networks (Telecom and IP) is taking place very rapidly and at diff erent levels: (1) network level: unifi cation of IP networks with traditional Telecom networks through evolving standards (Session Initiation Protocol (SIP), Realtime Transfer Protocol (RTP), SS7, 3G) to support interopera- bility; (2) service level: traditional Telecom services like voice calls are being provi- sioned on the IP backbone (VoIP), while traditional IP services (most data-driven services such as multimedia, browsing, chatting, gaming, etc.) are accessible over the Telecom network.
标签： Platforms Delivery Service
上传时间： 2020-06-01
上传用户：shancjb
A wireless communication network can be viewed as a collection of nodes, located in some domain, which can in turn be transmitters or receivers (depending on the network considered, nodes may be mobile users, base stations in a cellular network, access points of a WiFi mesh etc.). At a given time, several nodes transmit simultaneously, each toward its own receiver. Each transmitter–receiver pair requires its own wireless link. The signal received from the link transmitter may be jammed by the signals received from the other transmitters. Even in the simplest model where the signal power radiated from a point decays in an isotropic way with Euclidean distance, the geometry of the locations of the nodes plays a key role since it determines the signal to interference and noise ratio (SINR) at each receiver and hence the possibility of establishing simultaneously this collection of links at a given bit rate. The interference seen by a receiver is the sum of the signal powers received from all transmitters, except its own transmitter.
标签： Stochastic Geometry Networks Wireless Volume and II
上传时间： 2020-06-01
上传用户：shancjb
Wireless communications has become a field of enormous scientific and economic interest. Recent success stories include 2G and 3G cellular voice and data services (e.g., GSM and UMTS), wireless local area networks (WiFi/IEEE 802.11x), wireless broadband access (WiMAX/IEEE 802.16x), and digital broadcast systems (DVB, DAB, DRM). On the physical layer side, traditional designs typically assume that the radio channel remains constant for the duration of a data block. However, researchers and system designers are increasingly shifting their attention to channels that may vary within a block. In addition to time dispersion caused by multipath propagation, these rapidly time-varying channels feature frequency dispersion resulting from the Doppler effect. They are, thus, often referred to as being “doubly dispersive.”
标签： Time-Varying Channels
上传时间： 2020-06-01
上传用户：shancjb
Notwithstanding its infancy, wireless mesh networking (WMN) is a hot and growing field. Wireless mesh networks began in the military, but have since become of great interest for commercial use in the last decade, both in local area networks and metropolitan area networks. The attractiveness of mesh networks comes from their ability to interconnect either mobile or fixed devices with radio interfaces, to share information dynamically, or simply to extend range through multi-hopping.
标签： Multi-hop Networks WiMAX WiFi Mesh LTE and
上传时间： 2020-06-01
上传用户：shancjb
Five years have passed since the first edition of this book was published.Over the five years,the world has witnessed a technological revolution headlined by an array of exciting consumer and industrial products such as the Nintendo Wii, Apple iPod/iPad, sensor-rich smart phones, phones with cameras,new operating systems for mobile phones and apps,e-books,WiFi,voice- over-IP calls, social networking, 3D animated movies, and cloud computing, to name the major ones that affect everyday living
标签： Foundations MEMS of
上传时间： 2020-06-06
上传用户：shancjb
全网最全的autojs列子，有一千六百多的脚本文件,脚本内容包含：几十种类型的UI脚本，抖音、QQ、微信、陌陌、支付宝等自动化操作的脚本、还有部分协议列表，HTTP协议(POST、GET)上传下载，接码模块，百度文字识别api模块，文件操作模块：txt文本读一行删一行，等等其他例子QQ语音红包.jsqq语音红包，没加悬浮窗，我觉得自己用脚本引擎会好点.jsQQ语音输入(Tim版)(1).jsQQ语音输入(Tim版).jsQQ资料赞.jsqq轰炸机(1).jsqq轰炸机.jsQQ选图涂鸦.jsqq顺序点赞脚本.jsQQ，微信聊天辅助脚本(文本分割填充字符) v2.jsQQ，微信聊天辅助脚本(文本分割填充字符).jsqtiao.jsrawWindow求解.jsrelationship.jsrhinoneteasecloudmusic.jsRobot.jsROOT权限启动无障碍服务.jsRSA.jsscript.jsscroll的使用.jsSecure.jssetting.jssha256.jsshell开关飞行模式.jsshuabaoviod.jsSMSCODE.jsSmsCodeExtract.jssojson.com.jssoul_灵魂匹配.jsspinner例子.jsSqlDatabase2.jsss.jsstart(2).jssun_rise&set.jssurfaceView(简单示例).jsSwitch控件.jstcp连接客户端.jste.jstest(1).jstest(2).jstest(3).jstest(4).jstest.jstestTouch.jstestyinhe.jsTheWolf_API.jstoast图片加文字.jstoast替代函数.jstranslate.jsTrun(翻翻乐).jsts-00-dist.jsTS微信跳一跳满分(10000)飞速版.jsts跳一跳r9s最新版.jsTS跳一跳全机型通用版(2).jsts跳一跳全机型通用版(3).jsts跳一跳全机型通用版.jsTS跳一跳脚本正确显示方式（支持root）.jsTS跳一跳自动.jsTS跳一跳过检测.jstt.jsTTS(1).jstts.jstts2.jstts3.jsTTS抢语音红包，作者A酷安(?????)----锦，详细使用看代码注释.jstxt.jsuc答题.jsui 悬浮窗动画+滑动界面.jsUI(2).jsUI.jsuitest - 副本.jsui。.jsui下对话框文件选择器(1).jsui中的延时除了多线程有别的办法吗.jsui保存控件属性3.jsUI全选.jsUI切换.jsui列子.jsui右下角展开按钮.jsui多界面.jsui属性(1).jsui开关控件(1).jsui开关控件.jsUI文件选择.jsUI显示日志.jsUI画时钟作者xxoo.jsui相对布局.jsUI示例(支付UI).jsui示例app下方tabs.jsui示例下方tabs(1.0.0-1 修复宽度不适配问题).jsUI脚本使用无障碍的最佳实践.jsUI轮播图.jsui选择文件.jsUI验证码（有BUG）.jsuki_0.jsUki消息交互式回复.jsUnlock.jsUntitled-1.jsuntitled.jsUTF.jsvip视频解析2.1.jsvscode连接不上手机解决办法.jsWannaCry(仅为娱乐).jsWeather.jswebScript.jsWebViewClient的使用方法.jswebViewUA切换3.jswebView填充表单加alert.jsWebView多页面浏览(1).jsWebView多页面浏览.jswebView提取图片地址并加载.jswebView获取图片地址.jswebview获取网页原图.jswebview获取网页原图保存.jswebView输入关键词搜索.jsweb拦截修改.jsWeChat.jsWechatJumpingAI(2).jsWechatJumpingAI(3).jswechatjumpingai(4).jsWechatJumpingAI.jswife紧急掉线（autojs破解版专用）.js.jswifi设置代理(未完成).js.js
标签： autojs
上传时间： 2021-11-06
上传用户：
常用芯片DIP SOT SOIC QFP电阻电容二极管等3D模型库 3D视图封装库 STEP后缀三维视图（154个）:050-9.STEP0805R.STEP1001-1.STEP1001-2.STEP1001-3.STEP1001-4.STEP1001-5.STEP1001-6.STEP1001-7.STEP1001-8.STEP103_1KV.STEP10X5JT.STEP1206R.STEP13PX2.STEP15PX2.STEP20P插针.STEP25V1000UF.STEP3296W.STEP35V2200UF.STEP3mmLED.STEP3mmLEDH.STEP3X3可调电阻.STEP400V0.1UF.STEP455.STEP630V0.1UF.STEP7805.STEP8P4R.STEPAXIAL-0.2-0.125W.STEPAXIAL-0.4-0.25W.STEPaxial-0.6-2W.STEPB-3528.STEPC-0805.STEPC06x18.STEPCAP-6032.STEPCH3.96 X2.STEPCH3.96-3P.STEPD-PAK.STEPDB25.STEPDC-30.STEPDIP14.STEPDIP16.STEPDIP6.STEPDIP8.STEPDO-214AA.STEPDO-214AB.STEPDO-214AC.STEPDO-41.STEPDO-41Z.STEPFMQ.STEPGNR14D.STEPH9700.STEPILI4981.STEPIN4007.STEPIN5408.STEPJP051-6P6C_02.STEPJQC-3F.STEPJS-1132-10.STEPJS-1132-11.STEPJS-1132-12.STEPJS-1132-13.STEPJS-1132-14.STEPJS-1132-15.STEPJS-1132-2.STEPJS-1132-3.STEPJS-1132-4.STEPJS-1132-5.STEPJS-1132-6.STEPJS-1132-7.STEPJS-1132-8.STEPJS-1132-9.STEPJS-1132R-2.STEPJS-1132R-3.STEPJS-1132R-4.STEPJS-1132R-5.STEPJS-1132R-6.STEPJS-1132R-7.STEPJS-1132R-8.STEPJZC-33F.STEPKBP210.STEPKE2108.STEPKF2510 X8.STEPKF301.STEPKF301x3.STEPKSD-9700.STEPLED5_BLUE.STEPLED5_GRE.STEPLED5_RED.STEPLED5_YEL.STEPLFCSP_WQ.STEPLQFP100.STEPLQFP48.STEPMC-146.STEPmolex-22-27-2021.STEPmolex-22-27-2031.STEPmolex-22-27-2041.STEPmolex-22-27-2051.STEPmolex-22-27-2061.STEPmolex-22-27-2071.STEPmolex-22-27-2081.STEPMSOP10.STEPMSOP8.STEPPA0630NOXOX-HA1.STEPPIN10.STEPPIN24.STEPPIN24A.STEPR 0805.STEPR0402.STEPR0603.STEPR0805.STEPR1206.STEPRA-15.STEPRA-20.STEPRS808.STEPSIP-3-3.96 22-27-2031.STEPSL-B.STEPSL-D.STEPSL-E.STEPSL-G.STEPSL-H.STEPSOD-123.STEPSOD-323.STEPSOD-523.STEPSOD-723.STEPSOD-80.STEPSOIC-8.STEPSOP-4.STEPSOP14.STEPSOP16.STEPSOP18.STEPSOT-89.STEPSOT223.STEPSOT23-3.STEPSOT23-5.STEPSSOP28.STEPTAJ-A.STEPTAJ-B.STEPTAJ-C.STEPTAJ-D.STEPTAJ-E.STEPTAJ-R.STEPTHB6064H.STEPTO-126.STEPTO-126X.STEPTO-220.STEPTO-247.STEPTO-252-3L.STEPTOSHIBA_11-4C1.STEPTSSOP-8.STEPTSSOP14-BOTTON.STEPTSSOP14.STEPTSSOP28.STEPUSB-A.STEPUSB-B.STEPWT.STEP
标签： 芯片 dip sot soic qfp 电阻 电容 二极管 封装
上传时间： 2021-11-21
上传用户：XuVshu
