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OFDM信号频谱感10
说明： 前已提出的频谱感知方法主要包括匹配滤波器检测、 能量检测、 循环平稳特征检测以及多分辨率频谱感知. 这些方法均为单节点感知方法.然而，在阴影和深度衰落情况下， 单个节点的感知结果并不可靠， 因此， 需要对多个节点的感知结果进行融合，以提高检测可靠性， 即协作感知技术. 文献采用“或” 准则对各个 CR 感知结果进行融合. 文献则提出了基于 D-S 证据理论的协作频谱感知算法，虽然该算法的性能比“或” 准则或“与”准则要好， 但需要存储大量历史信息， 算法的计算复杂度也很高. 文献中分析了采用似然比检测(likelihood ratio test， LRT) 的软判决与采用“与” 准则的硬判决的性能， 结果表明采用软判决的协作感知性能更优(Previously proposed spectrum sensing methods mainly include matched filter detection, energy detection, cyclostationary feature detection and multi-resolution spectrum sensing. These methods are all single node sensing methods. However, in the case of shadow and deep fading, the sensing results of single node are not reliable, so, It is necessary to fuse the sensing results of multiple nodes to improve the detection reliability, i.e. cooperative sensing technology. In the literature, "or" criterion is used to fuse the CR sensing results. In the literature, a cooperative spectrum sensing algorithm based on D-S evidence theory is proposed. Although the performance of the algorithm is better than "or" criterion or "and" criterion, a large amount of historical information needs to be stored, The computational complexity of the algorithm is also very high. In the literature, the performance of the soft decision based on the likelihood ratio test)
- 2020-11-19 21:19:37下载
- 积分：1
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CVX_9.744
说明： 使用凸优化方法来优化17 元随机稀疏线阵 (阵列孔径为 9.744λ )(Using convex optimization method to optimize 17-element random sparse linear array (array aperture is 9.744 lambda))
- 2019-04-06 02:05:28下载
- 积分：1
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211UPLINKnew
本文档，分别描述了LTE上行PUSCH信道，PUCCH信道，PRACH信道的基带信号处理流程(This document describes the LTE Uplink PUSCH each channel, PUCCH channel, PRACH channel baseband signal processing)
- 2010-06-23 10:33:42下载
- 积分：1
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vanetmatlab
说明： artificial transportation system and internet of vehicles, internet of things, vanet, intelligent transportation.
- 2020-06-24 21:40:01下载
- 积分：1
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LDPC_OFDM-system
LDPC_OFDM系统在多径衰落信道下的性能分析。PDF论文。(LDPC_OFDM system performance anylasis in rayleigh fading channel. PDF paper)
- 2013-04-12 19:22:44下载
- 积分：1
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Clarke
【matlab】Clarke信道全向天线和环形天线包络协方差与成型因子关系仿真代码(Simulation code of the relationship between the envelope covariance of the Clarke channel omnidirectional antenna and the ring antenna and the forming factor using MATLAB)
- 2018-01-20 04:52:50下载
- 积分：1
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2nodes
opnet Ad hoc仿真源程序,自己构建的路由协议和网络模型(opnet Ad hoc simulation source code, to build its own routing protocol and network model)
- 2021-04-27 23:48:44下载
- 积分：1
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OPNET Modeler仿真实例（7个）
说明： OPNET仿真教程，练习实例，供新手入门练习(OPNET Simulation course, practice examples, for beginners to practice)
- 2021-01-31 12:20:51下载
- 积分：1
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QPSK-SimulationGray-CodingRayleigh-Fading
QPSK SimulationGray CodingRayleigh Fading
- 2011-07-26 00:08:37下载
- 积分：1
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ram_test
说明： 对片内RAM进行读写操作，通过数据的写入和读出，对RAM的操作进行熟悉。(Read and write ram on chip, and get familiar with RAM operation through data writing and reading.)
- 2020-08-17 11:38:22下载
- 积分：1
