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Description: A Survey of Spectrum Sensing Algorithms The spectrum sensing problem has gained new aspects with cognitive radio and opportunistic spectrum access concepts. It is one of the most challenging issues in cognitive radio systems. In this paper, a survey of spectrum sensing methodologies for cognitive radio is presented. Various aspects of spectrum sensing problem are studied from a cognitive radio perspective and multi-dimensional spectrum sensing concept is introduced. Challenges associated with spectrum sensing are given and enabling spectrum sensing methods are reviewed. The paper explains the cooperative sensing concept and its various forms. External sensing algorithms and other alternative sensing methods are discussed. Furthermore, statistical modeling of network traffic and utilization of these models for prediction of primary user behavior is studied. Finally, sensing features of some current wireless standards are given.
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Size: 453502 |
Author: chenpeng3361 |
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Description: 具体讲了频谱分析仪的原理，结构以及基本的指标参数。还举例讲述了它的几种实用方法。-Specifically, the spectrum analyzer to the principle, structure and the basic parameters. For also on several of its practical method.
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Size: 690176 |
Author: 施耀华 |
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Description: 现代信号处理中谱估计在matlab中的使用例程-Modern Signal Processing Spectrum Estimation in the use of matlab routines
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Size: 63488 |
Author: chenpailin |
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Description: Spectrum Digital, Inc的 详细的 DM6467开发资料！DaVinciHD_EVM_TechRef_RevD，This is the primary location for all Davinci HD EVM related documentation, notes and errata. This version of the page applies to the lastest shipping version. Here is a complete version history:DaVinci HD Schematics
Board schematics-Spectrum Digital, Inc to develop the detailed information DM6467! DaVinciHD_EVM_TechRef_RevD, This is the primary location for all Davinci HD EVM related documentation, notes and errata. This version of the page applies to the lastest shipping version. Here is a complete version history: DaVinci HD SchematicsBoard schematics
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Size: 2263040 |
Author: liliang |
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Description: Simulink产生一单径瑞利信道，其多普勒谱为经典谱，其中移动速率为120km/h。-Simulink produce one single-Path Rayleigh channel, the Doppler spectrum for the classical spectrum, one of the mobile rate of 120km/h.
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Size: 57344 |
Author: 华建 |
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Description: 求频谱的一种方法，可以得到图中任意行的频谱，对三幅图的频谱做比较，并将数据存入excel里。-A method to gain the spectrum, and gain spectrum of any line.Compare the spectrum of different three pictures, and save them into excel.
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Size: 125952 |
Author: xkh |
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Description: 对wav音频进行分析，并进行fft转换，最后生成可视的频谱图-Wav audio for analysis and fft conversion, the final generation of visual spectrum
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Size: 2471936 |
Author: chobits |
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Description: 这里几种功率谱估计方法，对它们的性能进行了比较，可供参考！-Here several methods of power spectrum estimation of their performance are compared for the reference!
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Size: 1024 |
Author: 刘凯 |
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Description: MATLAB产生随机信号，计算相关函数，估计功率谱-MATLAB，random-signal，auto-correlation，power-spectrum
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Size: 1024 |
Author: 林俊 |
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Description: Fundamental Limits of Spectrum-Sharing in Fading Environments, a full report that regenerate a publeshed paper. written in my words
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Size: 186368 |
Author: Ayman |
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Description: 带干扰的直接序列扩频通信系统,PN码由m序列产生器产生，经过高斯白噪声信道。在接收端接收到的信号包括“有用信号+高斯白噪声+干扰”，将接收信号进行解扩，判决，得到用户的信号检测结果，绘制不同的扩频增益（增益值为10，30，50）下，误比特率随信噪比Eb/N0的变化曲线。-the direct sequence spread spectrum with interference communication system
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Size: 9216 |
Author: ailj |
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Description: function [f,Py,w,fp,Pmax]=spectrum(ug,dt)
spectrum Compute the one-sided psd from the power spectrum
refer to the help of fft and periodgram.m.
codied by Dr. Ping TAN
June, 2005- function [f, Py, w, fp, Pmax] = spectrum (ug, dt) spectrum Compute the one-sided psd from the power spectrum refer to the help of fft and periodgram.m. codied by Dr. Ping TAN June, 2005
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Size: 1024 |
Author: manman |
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Description: 自相关算法的AR功率谱估计，分析了AR 模型参数自相关算法并用MATLAB 工具实现了该算法的功率谱估计-Auto-correlation algorithm AR power spectrum estimation, analysis of the AR model parameters since the correlation algorithm and implemented using MATLAB tools for power spectrum estimation of the algorithm
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Size: 732160 |
Author: ppp0001 |
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Description: AR模型功率谱估计的典型算法比较及MATLAB实现-AR model of a typical power spectrum estimation algorithm for comparison and MATLAB implementation
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Size: 591872 |
Author: ppp0001 |
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Description: 跳频扩谱通信matlab代码，实现跳频通信系统仿真。-Matlab code for frequency hopping spread spectrum communications, to achieve frequency hopping communication system simulation.
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Size: 1024 |
Author: 刘杰 |
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Description: algorithms for dynamic spectrum management in DSL systems
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Size: 20480 |
Author: phrzn |
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Description: 分析了输入信号的频谱，运用的FFT处理数据，外国人设计的 效果不错-This is an experimental work to monitor a spectrum pattern in radio band, and is a continuous project from Audio Spectrum Monitor. To analyze the spectrum of an input signal, I chose an Atmel AVR microcontroller that used in the Audio Spectrum Monitor to process FFT. When think it easy, it can be thought that sample an input RF signal directly and analyze it will do. However, you will able to recoginize that there are some techinical difficulties from following reasons.
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Size: 385024 |
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Description: 基于FPGA的扩频接收机（直扩）vhdl编写的，最好在quartus环境运行。-FPGA-based spread spectrum receiver (DS) vhdl prepared, the best environment to run in quartus.
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Size: 361472 |
Author: 赵童 |
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Description: VB编程录音频谱分析设计代码VB Programming design code audio spectrum analysis
-VB Programming design code audio spectrum analysis
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Size: 988160 |
Author: jkc |
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Description: vc++ 显示音效的柱状频谱模块vc + + shows the spectrum of columnar sound module
-vc++ shows the spectrum of columnar sound module
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Size: 22528 |
Author: dd |
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