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Cross-layer

  • code wimax use c++ imanite mac layer in ns2

    code wimax use c++ imanite mac layer in ns2

    標簽: imanite wimax layer code

    上傳時間: 2017-09-20

    上傳用戶:teddysha

  • a program written by delphi about middle layer

    a program written by delphi about middle layer

    標簽: program written delphi middle

    上傳時間: 2014-01-08

    上傳用戶:qq521

  • the algorithm of cross validation

    the algorithm of cross validation

    標簽: validation algorithm cross the

    上傳時間: 2014-08-28

    上傳用戶:Late_Li

  • ı t is about transport layer for network lessons

    ı t is about transport layer for network lessons

    標簽: transport network lessons about

    上傳時間: 2017-09-28

    上傳用戶:ljmwh2000

  • 互相關函數,cross-correlation function

    互相關函數,cross-correlation function

    標簽: cross-correlation function 函數

    上傳時間: 2017-09-28

    上傳用戶:huannan88

  • cross-correlation function

    cross-correlation function

    標簽: cross-correlation function

    上傳時間: 2017-09-28

    上傳用戶:kr770906

  • 互相關函數,cross-correlation function

    互相關函數,cross-correlation function

    標簽: cross-correlation function 函數

    上傳時間: 2017-09-28

    上傳用戶:ecooo

  • Physical Layer Security in Wireless Communications

    The ever-increasing demand for private and sensitive data transmission over wireless net- works has made security a crucial concern in the current and future large-scale, dynamic, and heterogeneous wireless communication systems. To address this challenge, computer scientists and engineers have tried hard to continuously come up with improved crypto- graphic algorithms. But typically we do not need to wait too long to find an efficient way to crack these algorithms. With the rapid progress of computational devices, the current cryptographic methods are already becoming more unreliable. In recent years, wireless re- searchers have sought a new security paradigm termed physical layer security. Unlike the traditional cryptographic approach which ignores the effect of the wireless medium, physi- cal layer security exploits the important characteristics of wireless channel, such as fading, interference, and noise, for improving the communication security against eavesdropping attacks. This new security paradigm is expected to complement and significantly increase the overall communication security of future wireless networks.

    標簽: Communications Physical Security Wireless Layer in

    上傳時間: 2020-05-31

    上傳用戶:shancjb

  • MP3音頻編解碼運算中IMDCT算法研究及其FPGA實現.rar

    近年來,隨著多媒體技術的迅猛發展,電子、計算機、通訊和娛樂之間的相互融合、滲透越來越多,而數字音頻技術則是應用最為廣泛的技術之一。MP3(MPEG-1 Audio LayerⅢ)編解碼算法作為數字音頻的解決方案,在便攜式多媒體產品中得到了廣泛流行。 在已有的便攜式MP3系統實現方案中,低速處理器與專用硬件結合的SOC設計方案結合了硬件實現方式和軟件實現方式的優點,具有成本低、升級容易、功能豐富等特點。IMDCT(反向改進離散余弦變換)是編解碼算法中一個運算量大調用頻率高的運算步驟,因此適于硬件實現,以降低處理器的開銷和功耗,來提高整個系統的性能。 本文首先闡述了MP3音頻編解碼標準和流程,以及IMDCT常用的各種實現算法。在此基礎上選擇了適于硬件實現的遞歸循環實現方法,并在已有算法的基礎上進行了改進,減小了所需硬件資源需求并保持了運算速度。接著提出了模塊總體設計方案,結合算法進行了實現結構的優化,并在EDA環境下具體實現,用硬件描述語言設計、綜合、仿真,且下載到Xilinx公司的VirtexⅡ系列xc2v1000FPGA器件中,在減小硬件資源的同時快速地實現了IMDCT,經驗證功能正確。

    標簽: IMDCT FPGA MP3

    上傳時間: 2013-05-31

    上傳用戶:Minly

  • 世界超級電容器發展動態

    超級電容器又稱超大容量電容器、金電容、黃金電容、儲能電容、法拉電容、電化學電容器或雙電層電容器(英文名稱為EDLC,即Electric Double Layer Capacitors),是靠極化電解液

    標簽: 超級電容器 發展動態

    上傳時間: 2013-05-23

    上傳用戶:gxmm

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