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Complexity

  • 演算法評估

    演算法評估 用空間和時間評估演算法效能 時間複雜度(Time Complexity) 空間複雜度(Space Complexity) 效能評估 效能分析(Performance Analysis):事前評估 效能評估(Performance Measurement):效能量測 評估時均假設處理的資料量為n到無窮大

    標簽: 演算

    上傳時間: 2015-06-13

    上傳用戶:18007270712

  • 基于頻率插值的4.0kbps 語音編碼器的性能和設計(英文)

    The 4.0 kbit/s speech codec described in this paper is based on a Frequency Domain Interpolative (FDI) coding technique, which belongs to the class of prototype waveform Interpolation (PWI) coding techniques. The codec also has an integrated voice activity detector (VAD) and a noise reduction capability. The input signal is subjected to LPC analysis and the prediction residual is separated into a slowly evolving waveform (SEW) and a rapidly evolving waveform (REW) components. The SEW magnitude component is quantized using a hierarchical predictive vector quantization approach. The REW magnitude is quantized using a gain and a sub-band based shape. SEW and REW phases are derived at the decoder using a phase model, based on a transmitted measure of voice periodicity. The spectral (LSP) parameters are quantized using a combination of scalar and vector quantizers. The 4.0 kbits/s coder has an algorithmic delay of 60 ms and an estimated floating point Complexity of 21.5 MIPS. The performance of this coder has been evaluated using in-house MOS tests under various conditions such as background noise. channel errors, self-tandem. and DTX mode of operation, and has been shown to be statistically equivalent to ITU-T (3.729 8 kbps codec across all conditions tested.

    標簽: frequency-domain interpolation performance Design kbit_s speech coder based and of

    上傳時間: 2018-04-08

    上傳用戶:kilohorse

  • Ad+Hoc+Mobile+Wireless+Networks

    Communication between various devices makes it possible to pro- vide unique and innovative services. Although this interdevice com- munication is a very powerful mechanism, it is also a complex and clumsy mechanism, leading to a lot of Complexity in present day systems. This not only makes networking difficult but also limits its flexibility.

    標簽: Wireless Networks Mobile Hoc Ad

    上傳時間: 2020-05-26

    上傳用戶:shancjb

  • Digital+Communication+over+Fading+Channels 1st

    Regardless of the branch of science or engineering, theoreticians have always been enamored with the notion of expressing their results in the form of closed-form expressions. Quite often, the elegance of the closed-form solution is overshadowed by the Complexity of its form and the difficulty in evaluating it numerically. In such instances, one becomes motivated to search instead for a solution that is simple in form and simple to evaluate. 

    標簽: Communication Channels Digital Fading over 1st

    上傳時間: 2020-05-27

    上傳用戶:shancjb

  • Digital+Communication+over+Fading+Channels,2nd

    Regardless of the branch of science or engineering, theoreticians have always been enamored with the notion of expressing their results in the form of closed-form expressions. Quite often the elegance of the closed-form solution is overshadowed by the Complexity of its form and the difficulty in evaluating it numerically. In such instances, one becomes motivated to search instead for a solution that is simple in form and likewise simple to evaluate. 

    標簽: Communication Channels Digital Fading over 2nd

    上傳時間: 2020-05-27

    上傳用戶:shancjb

  • Interconnected+Networks

    Complex networks are powerful allies of our quest to tackle Complexity in all of science. Many lines can be written about the benefits of using networks to study complex systems. Nevertheless, if I had to name their single most appealing property,Iwouldsaysimplicity.Onecanmaptheinteractingelementsofanysystem to a set of nodes, and connect these nodes with a set of links according to their interactions. 

    標簽: Interconnected Networks

    上傳時間: 2020-05-27

    上傳用戶:shancjb

  • Low Complexity MIMO Detection

    In order to improve the spectral efficiency in wireless communications, multiple antennas are employed at both transmitter and receiver sides, where the resulting system is referred to as the multiple-input multiple-output (MIMO) system. In MIMO systems, it is usually requiredto detect signals jointly as multiple signals are transmitted through multiple signal paths between the transmitter and the receiver. This joint detection becomes the MIMO detection.

    標簽: Complexity Detection MIMO Low

    上傳時間: 2020-05-27

    上傳用戶:shancjb

  • Principles+of+Communication+Systems+Simulation

    This book is a result of the recent rapid advances in two related technologies: com- munications and computers. Over the past few decades, communication systems have increased in Complexity to the point where system design and performance analysis can no longer be conducted without a significant level of computer sup- port. Many of the communication systems of fifty years ago were either power or noise limited. A significant degrading effect in many of these systems was thermal noise, which was modeled using the additive Gaussian noise channel. 

    標簽: Communication Principles Simulation Systems of

    上傳時間: 2020-05-31

    上傳用戶:shancjb

  • Chemical mechanical polishing

    The planarization technology of Chemical-Mechanical-Polishing (CMP), used for the manufacturing of multi- level metal interconnects for high-density Integrated Circuits (IC), is also readily adaptable as an enabling technology in MicroElectroMechanical Systems (MEMS) fabrication, particularly polysilicon surface micromachining. CMP not only eases the design and manufacturability of MEMS devices by eliminating several photolithographic and film issues generated by severe topography, but also enables far greater flexibility with process Complexity and associated designs. T

    標簽: mechanical polishing Chemical

    上傳時間: 2020-06-06

    上傳用戶:shancjb

  • automation-and-robotics

    In this book for the optimisation of assembly conveyor lines we are dealing with series part production featured by a medium Complexity degree and a medium number of individual components and assembly technique alternatives. Modern production techniques for medium to large series products or mass production usually involve assembly conveyor lines. They still use hand labour more or less automated. The aim is to have monotonous and similar in type operations or such causing fatigue, stress and production traumas, gradually replaced by automated assembly cycles, means and techniques. This usually widely involves industrial robots and handlers. Higher productivity, lower cost and higher quality of assembled products are usually required.

    標簽: automation-and-robotics

    上傳時間: 2020-06-10

    上傳用戶:shancjb

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