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QPSK pn
结合QPSK调制的直接序列扩频系统的仿真(Combined with QPSK modulation direct-sequence spread-spectrum system simulation)
- 2013-03-13 18:42:03下载
- 积分：1
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yuandaima
HBASE Rowkey散列核心代码以及Filter过滤器效果实现
(HBASE Rowkey散列核心代码以及Filter过滤器效果实现)
- 2014-08-31 16:39:09下载
- 积分：1
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2
说明： 在MIMO系统里 2发2收天线，采用Alamouti发案编码的无线传输系统在瑞瑞丽平衰落信道下的误码率性能仿真，系统采用调制方式为QPSK。(MIMO 2 send and 2 receive antenna ,)
- 2018-05-09 22:27:04下载
- 积分：1
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802[1].3afPandPP802.3at-2009
802.3af/at标准,POE 供电协议(standard of 802.3af/at)
- 2011-05-28 10:26:46下载
- 积分：1
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z_filter_imp
Z域表示的数字滤波器的响应举例,利用给出的Z域的传递函数，求在给定初始状态和输入信号的情况下的系统的零输入响应，零状态响应，完全响应等。(Z-domain representation of the response of the digital filter for example, using the given Z-domain transfer function, to seek zero input response of the system in the case given the initial state and the input signal, the zero state response, complete response.)
- 2012-09-14 11:17:14下载
- 积分：1
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li2
它是以概率统计理论为基础，依据大数定律（样本均值代替总体均值），利用电子计算机数字模拟技术，通过不断产生随机序列来模拟事件的过程，来解决一些很难直接用数学运算求解或其他方法不能解决的复杂问题的一种近似算法，它既可模拟随机事件，也可模拟确定性事件。(It is based on the theory of probability and statistics, based on the law of large numbers (the mean of sample instead of the average), and using the digital simulation technology of electronic computer to simulate the process of events by constantly generating random sequences to solve some complicated problems which are difficult to be solved directly by mathematical calculation or by other methods. Like algorithm, it can simulate both random events and deterministic events.)
- 2018-07-05 10:10:18下载
- 积分：1
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16QAM_matlab
实现16QAM完整的调制解调系统，包括基带信号串并转换，星座图映射，升抽样成形滤波，升采样半带滤波，数字上变频，功放的多项式非线性效应，加性高斯白噪声信道，接收端下变频，降采样，匹配滤波，绘制接收端星座图。(16QAM modulation and demodulation realize the complete system, including the baseband signal string and conversion, constellation mapping, sampling shaping filter liter, half liter sampling with filtering, digital up-conversion, amplifier polynomial nonlinear effects, additive white gaussian noise channel, the receiver end down-conversion, down-sampling, matched filtering, draw the receiver constellation.)
- 2020-12-08 15:19:20下载
- 积分：1
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Logik25SModbusDecodingAlarmInfo
Logika 25s controllers Modbus alarm codes documentation
- 2017-05-18 19:35:03下载
- 积分：1
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CPP-The-Complete-Reference--4th-Edition
A good book for C++ for beginners
- 2013-03-28 14:18:29下载
- 积分：1
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Cognitive-Radio
说明： 利用通信系统中调制信号的循环平稳特性,对频谱空洞进行检测,提升频谱感知技术在低信噪比下的性能。实验结果表明:与传统能量检测方法相比,采用循环特征检测方法改善了认知无线电中频谱空洞的检测能力。(Based on the cyclostationarity of modulation signals, spectrum hole is detected, aiming at the improve- ment of the performance of spectrum sensing in low SNR situation. The results show that comparing with the tra- ditional energy detection technique, cyclostationarity-based spectrum sensing technique has greatly improved the detective ability in cognitive radio.)
- 2011-03-22 16:14:27下载
- 积分：1
