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spread-spectrum

  • P3.18. An analog signal xa(t) = sin (100πt) is sampled using the following sampling intervals. In e

    P3.18. An analog signal xa(t) = sin (100πt) is sampled using the following sampling intervals. In each case plot the spectrum of the resulting discrete-time signal. Ts= 0.1 ms, Ts= 1 ms, Ts = 0.01 Sec

    标签: following intervals sampling sampled

    上传时间: 2017-07-12

    上传用户:shizhanincc

  • Wi-Fi pollution, or an excessive number of access points in the area, especially on the same or neig

    Wi-Fi pollution, or an excessive number of access points in the area, especially on the same or neighboring channel, can prevent access and interfere with the use of other access points by others, caused by overlapping channels in the 802.11g/b spectrum

    标签: especially pollution excessive the

    上传时间: 2017-07-29

    上传用户:我们的船长

  • The Schumann resonance frequencies are a set of eigenmodes in the extremely low frequency (ELF) port

    The Schumann resonance frequencies are a set of eigenmodes in the extremely low frequency (ELF) portion of the electromagnetic field spectrum. These frequencies are only present for planetary-like bodies with a substantial ionosphere acting as a perfect electric conductor, thus forming a resonance cavity with the surface. In this example, the Schumann resonance frequencies for the Earth are calculated.

    标签: frequencies eigenmodes resonance extremely

    上传时间: 2014-12-09

    上传用户:stella2015

  • The Open Radar Data Acquisition (ORDA) subsystem replaces the current WSR-88D Radar Data Acquisiti

    The Open Radar Data Acquisition (ORDA) subsystem replaces the current WSR-88D Radar Data Acquisition subsystem with improved receiver and signal processing hardware and with improved user interface, signal processing and diagnostics software. This paper will discuss the input data from the digital receiver, the ORDA signal processing, and the data output from the ORDA hardware. Specifications of the ORDA digital receiver will be presented. The paper outlines the critical radar signal processing flow and provides analysis of new spectrum width computations and clutter filtering schemes used in the ORDA system. Where appropriate, ORDA performance enhancements, data quality improvements and reliability and maintenance improvements will be highlighted.

    标签: Radar Data Acquisition Acquisiti

    上传时间: 2017-08-25

    上传用户:leixinzhuo

  • fft analysis

          Use the fast Fourier transform function fft to analyse following signal. Plot the original signal, and the magnitude of its spectrum linearly and logarithmically. Apply Hamming window to reduce the leakage.   .   The hamming window can be coded in Matlab as   for n=1:N hamming(n)=0.54+0.46*cos((2*n-N+1)*pi/N); end;   where N is the data length in the FFT.

    标签: matlab fft

    上传时间: 2015-11-23

    上传用户:石灰岩123

  • fft analysis

    Use fft to analyse signal by plotting the original signal and its spectrum.  

    标签: matlab fft

    上传时间: 2015-11-23

    上传用户:石灰岩123

  • 16qam

    调制解调课程设计 16QAM调制解调代码。包括星座图,频谱分析,误码率分析。-16QAM modulation and demodulation curriculum design code modulation and demodulation. Including constellation, spectrum analysis, bit error rate analysis.

    标签: qam 16

    上传时间: 2016-05-02

    上传用户:ylqylq

  • 流行病的全局传播研究

    Characterizing the dynamics underlying global spread of epidemics

    标签: Characterizing underlying epidemics dynamics global spread the of

    上传时间: 2019-04-18

    上传用户:glstone

  • 2015_01_3GPP_unlicensed_Dino_Flore

    Licensed spectrum remains 3GPP operators’ top priority to deliver advanced services and user experience Opportunistic use of unlicensed spectrum is becoming an important complement for operators to meet the growing traffic demand Moving forward 3GPP operators will have two options to offload traffic to unlicensed spectrum: 1. Wi-Fi (via LTE/Wi-Fi interworking) 2. LTE over unlicensed It will then be up to each individual operator to choose which approach to use, which will depend on a number of factors

    标签: 3GPP_unlicensed_Dino_Flore 2015 01

    上传时间: 2020-05-26

    上传用户:shancjb

  • Baseband+Receiver+Algorithms

    The growing interest for high data rate wireless communications over the last few decades gave rise to the emergence of a number of wideband wireless systems. The resulting scarcity of frequency spectrum has been forcing wireless system designers to develop methods that will push the spectral efficiency to its limit.

    标签: Algorithms Baseband Receiver

    上传时间: 2020-05-26

    上传用户:shancjb