Description: 自己编写的GMSK信号的循环谱密度程序，开发平台MATLAB，对于循环谱检测有一定的参考价值！-I have written the cycle of GMSK signal spectral density procedures, development platform MATLAB, for the cyclic spectrum detection of some reference value! Platform: |
Size: 1024 |
Author:yangjiaxin |
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Description: 认知无线电的频谱检测算法的MATLAB实现，完整版。-Cognitive radio spectrum detection algorithm of the MATLAB realization of the full version. Platform: |
Size: 69632 |
Author:小范308 |
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Description: 认知无线电频谱检测技术的研究,有循环检测，周期性检测，仿真程序和结果。很全面。-Cognitive radio frequency spectrum detection technology, there are cycle detection, periodic testing, simulation program and results. Very comprehensive. Platform: |
Size: 38912 |
Author:小范308 |
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Description: Cognitive radio frequency spectrum detection-The spectrum sensing of a wideband frequency range is studied by dividing it into multiple subbands.
It is assumed that in each subband either a primary user (PU) is active or absent in a additive white Gaussian
noise environment with an unknown variance. It is also assumed that at least a minimum given number of
subbands are vacant of PUs. In this multiple interrelated hypothesis testing problem, the noise variance is
estimated and a generalised likelihood ratio detector is proposed to identify possible spectrum holes at a
secondary user (SU). Provided that it is known that a specific PU can occupy a subset of subbands
simultaneously, a grouping algorithm which allows faster spectrum sensing is proposed. The collaboration of
multiple SUs can also be considered in order to enhance the detection performance. The collaborative
algorithms are compared in terms of the required exchange information among SUs in some collaboration
methods. The simulation results show that the propos Platform: |
Size: 231424 |
Author:phillis |
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Description: 小波变换检测信号频谱边缘，利用多尺度小波模极大值法确定信号频谱边缘。-Wavelet transform edge detection of the signal spectrum, using multi-scale wavelet modulus maximum method to determine the edge of the signal spectrum. Platform: |
Size: 1024 |
Author:刘单 |
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Description: 介绍认知无线电频谱检测技术，包括传统以及现代方法-Introduction to Cognitive radio frequency spectrum detection technology, including traditional and modern methods Platform: |
Size: 875520 |
Author:刘广川 |
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Description: 最大化频谱接入机会的能量检测方法的研究---认知无线电-Access to opportunities to maximize the energy spectrum detection of cognitive radio--- Platform: |
Size: 1024 |
Author:杨光 |
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Description: 最大化频谱接入机会的能量检测方法的研究-----认知无线电-Access to opportunities to maximize the energy spectrum detection of cognitive radio----- Platform: |
Size: 1024 |
Author:杨光 |
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Description: 最大化频谱接入机会的能量检测方法的研究-----认知无线电-Access to opportunities to maximize the energy spectrum detection of cognitive radio----- Platform: |
Size: 1024 |
Author:杨光 |
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Description: 认知无线电技术中频谱感知中的能量感知仿真代码。-Spectrum sensing in cognitive radio technology in the power aware simulation code. Platform: |
Size: 2048 |
Author:孙璇 |
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Description: 谱感知技术是认知无线电(CR)的关键技术,频谱检测的可靠度和精度决定了是否会影响主用户的正常通信及认知用户能否有效利用频谱.在频谱检测的众多方法中,能量检测法是一种常用的方法,但能量检测器的门限很容易受到噪声功率变化的影响,影响主用户的正常通信.笔者提出一种自适应背景噪声的门限设置方法,通过引入门限评价指数作为衡量频谱感知效率和频谱资源利用率的度量指标,使得认知用户在不同的应用环境中能自适应地设置频谱感知门限,达到更充分利用频谱资源和更有效传送信号的目的.仿真证明,该方法确定的门限能够随着噪声条件的改变而改变,显著提高了能量感知方案的性能.-Spectrum sensing technology is the key technology of the cognitive radio(CR),the reliability and accuracy of the spectrum detection decides whether it will affect the normal communication of the main users and the utilization of spectrum of the cognitive users.Among the many methods of spectrum detection,energy detection is a commonly used method.However,in practice,the uncertainty of noise interference makes the setting of the threshold difficult,causing an interruption of the communication of the main use Platform: |
Size: 212992 |
Author:曹蒙 |
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Description: 认知无线电频谱检测中的能量检测模型的构建，以及产生不同信噪比的pf和pd的概率-Detection of Cognitive Radio Spectrum Detection Model for the energy and produce different signal to noise ratio of the probability pf and pd Platform: |
Size: 2048 |
Author:zhiyan |
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Search - spectrum detection