-
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
-
lesson4
说明： 利用pluto设备实现fm调制与解调，simulink代码文件(Use pluto equipment to realize fm modulation and demodulation, simulink code file)
- 2020-12-17 13:38:28下载
- 积分：1
-
water_select
MIMO下天线选择matlab仿真实现，比较简单(MIMO antenna selection under)
- 2009-04-09 13:30:09下载
- 积分：1
-
report2008
说明： 中国的手机游戏市场用户调研报告2008年度(China mobile phone game market research report of 2008 users)
- 2009-07-22 15:06:40下载
- 积分：1
-
PTS
OFDM系统中，部分传输序列PTS的算法源码((Orthogonal Frequency Division Multiplexing PTS)
- 2013-09-26 08:22:41下载
- 积分：1
-
Mackay
实现LDPC码校验矩阵的构造，采用Mackay 1A方法(Implementation of LDPC code check matrix construction uses Mackay 1A method)
- 2021-04-27 20:18:44下载
- 积分：1
-
New folder (3)
this folder contains VIs related to USRP.
- 2019-06-08 22:23:44下载
- 积分：1
-
基于DFT码本的波束方向图生成代码 Beamforming_DFT
基于DFT码本的波束方向图生成代码，通俗易懂(DFT based beam pattern generation code, easy to understand)
- 2020-07-03 00:40:02下载
- 积分：1
-
Carrier-Frequency
MPSK QAM MASK MPSK信号载频估计matlab程序(matlab program of estimating Carrier Frequency of MPSK QAM MASK MPSK signal )
- 2012-02-23 18:11:44下载
- 积分：1
-
信号处理中QAM调制、过信道、解调部分 blind
实现信号处理中QAM调制、过信道、解调部分。其中QAM调制部分可改符号点数，M阶数，信道加高斯白噪声、时延、多径，调制解调均有星座图。通过本代码，可学习QAM调制解调，或者通信系统的知识。(To achieve QAM modulation, signal processing over channel, a demodulation section. QAM modulation section can be changed symbolic points M order channel additive white Gaussian noise, delay, multipath, the modem has constellation diagram. QAM modulation and demodulation, or communication system knowledge through this code, you can learn.)
- 2012-11-21 16:28:55下载
- 积分：1
