The explosion in demand for wireless services experienced over the past 20 years has put significant pressure on system designers to increase the capacity of the systems being deployed. While the spectral resource is very scarce and practically exhausted, the biggest possibilities are predicted to be in the areas of spectral reuse by unlicensed users or in exploiting the spatial dimension of the wireless channels. The former approach is now under intense development and is known as the cogni- tive radio approach (Haykin 2005).
標(biāo)簽： Multi-Antenna Wireless Channels Modeling
上傳時(shí)間： 2020-06-01
上傳用戶：shancjb
HIS IS THE THIRD —and most likely the last—book in the series on information technology for energy managers and web based energy infor- mation and control systems. This book concentrates on web based enterprise energy and building automation systems, and serves as a capstone volume in this series. The thrust here is that the highest level functions of a building and facility automation system are provided by a web based EIS/ECS system that provides energy management, maintenance management, overall facility operational management, and ties in with the enterprise resource management system for the entire facility or the group of facilities being managed. If there were ever to be a fourth volume in this series, it would follow the logical progression of the first three volumes, and would probably be titled Web Based Enterprise Resource Management Systems.
標(biāo)簽： Enterprise Energy Based Web
上傳時(shí)間： 2020-06-06
上傳用戶：shancjb
Resource allocation is an important issue in wireless communication networks. In recent decades, cognitive radio technology and cognitive radio-based networks have obtained more and more attention and have been well studied to improve spectrum utilization and to overcomethe problem of spectrum scarcity in future wireless com- munication systems. Many new challenges on resource allocation appear in cogni- tive radio-based networks. In this book, we focus on effective solutions to resource allocation in several important cognitive radio-based networks, including a cogni- tive radio-basedopportunisticspectrum access network, a cognitiveradio-basedcen- tralized network, a cognitive radio-based cellular network, a cognitive radio-based high-speed vehicle network, and a cognitive radio-based smart grid.
標(biāo)簽： Cognitive Networks Radio
上傳時(shí)間： 2020-06-07
上傳用戶：shancjb
Chapter 1：Introduction and Overview Chapter 2：Switches，Buttons，and Knob 開關(guān)按鈕Chapter 3：Clock Sources 時(shí)鐘脈沖源Chapter 4：FPGA Configuration Options 配置Chapter 5：Character LCD Screen LCD顯示屏特性Chapter 6：VGA Display Port VGA接口——接到顯示器上Chapter 7：RS-232 Serial Ports RS-232接口——接器件Chapter 8：PS/2 Mouse/Keyboard Port PS/2鼠標(biāo)鍵盤接口Chapter 9：Digital to Analog Converter（DAC）D/A接口Chapter 10：Analog Capture Circuit 模擬捕獲電路Chapter 11：Intel StrataFlash Parallel NOR Flash PROM Chapter 12：SPI Serial Flash 串行外圍接口系列閃存Chapter 13：DDR SDRAM 內(nèi)存Chapter 14：10/100 Ethernet Physical Layer Interface以太網(wǎng)物理層接口Chapter 15：Expansion Connectors 擴(kuò)展接口Chapter 16：XC2C64A CoolRunner-II CPLDChapter 17：DS2432 1-Wire SHA-1 EEPROMSpartan-3E入門實(shí)驗(yàn)板使設(shè)計(jì)人員能夠即時(shí)利用Spartan-3E系列的完整平臺(tái)性能。設(shè)備支持：Spartan-3E、CoolRunner-ll關(guān)鍵特性：Xilinx器件：Spartan-3E（50萬門，XC3S500E-4FG320C），CoolRunnerTM-lI與Platform Flash時(shí)鐘：50MHz晶體時(shí)鐘振蕩器存儲(chǔ)器：128Mbit 并行Flash，16 Mbit SPI Flash，64MByte DDR SDRAM連接器與接口：以太網(wǎng)10/100Phy，JTAG USB下載，兩個(gè)9管腳RS-232串行端口，PS/2類型鼠標(biāo)/鍵盤端口，帶按鈕的旋轉(zhuǎn)編碼器，四個(gè)滑動(dòng)開關(guān)，八個(gè)單獨(dú)的LED輸出
標(biāo)簽： Spartan-3E
上傳時(shí)間： 2022-06-19
上傳用戶：kingwide
Internet-“冷戰(zhàn)”的產(chǎn)物-1957年10月和11月，前蘇聯(lián)先后有兩顆“Sputnik”衛(wèi)星上天-1958年美國(guó)總統(tǒng)艾森豪威爾向美國(guó)國(guó)會(huì)提出建立DARPA（Defense Advanced Research Project Agency），即國(guó)防部高級(jí)研究計(jì)劃署，簡(jiǎn)稱ARPA-1968年6月DARPA提出“資源共享計(jì)算機(jī)網(wǎng)絡(luò)”（Resource Sharing Computer Networks），目的在于讓DARPA的所有電腦互連起來，這個(gè)網(wǎng)絡(luò)就叫做ARPAnet，即“阿帕網(wǎng)”，是Interne的最早雛形早期的ARPAnet使用網(wǎng)絡(luò)控制協(xié)議（Network Control Protocol，NCP），不能互聯(lián)不同類型的計(jì)算機(jī)和不同類型的操作系統(tǒng)，沒有糾錯(cuò)功能1973年由Kahn和Vinton Cerf兩人合作為ARPAnet開發(fā)了新的互聯(lián)協(xié)議。1974年12月兩人正式發(fā)表第一份TCP協(xié)議詳細(xì)說明，但此協(xié)議有信包丟失時(shí)不能得到有效的糾正TCP協(xié)議分成了兩個(gè)不同的協(xié)議：-用來檢測(cè)網(wǎng)絡(luò)傳輸中差錯(cuò)的傳輸控制協(xié)議TCP-專門負(fù)責(zé)對(duì)不同網(wǎng)絡(luò)進(jìn)行互聯(lián)的互聯(lián)網(wǎng)協(xié)議IP從此TCP/IP協(xié)議誕生1983年ARPAnet上停止使用NCP，互聯(lián)網(wǎng)上的主機(jī)全部使用TCP/IP協(xié)議，TCP/IP協(xié)議成為Internet中的“世界語”
標(biāo)簽： TCP-IP
上傳時(shí)間： 2022-06-23
上傳用戶：
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