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中短波广播信号场强测量及空中管理 中短波广播是指频率为500KHz~30MHz范围内的音频调幅(AM)广播-medium-short wave radio signal field strength measurement and management of air MW and SW radio frequency refers to 500KHz ~ 30M Hz within the scope of audio amplitude modulation (AM) radio
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摘要:基于通信技术的列车运行控制系统(CBTC)是铁路信号的发展方向,交频分复用
OFDM)是一种无线环境下的高速传输技术,它对高速列车控制信息传输中卞要受到的由于多
径传播引起的快衰落所产生的影响有很强的抵抗能力.本文首先介绍了OFDM技术的发展和
基本原理,然后在计算机上用M atlal〕对其性能进行了仿真,仿真中将OFDM与传统的单载波
调制方式—i1,交振幅调制( 1frQAM)对抗多径十扰的性能进行了比较,最后分析了一者的仿真结果.
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C语言的正弦调幅波程序,可以根据此程序熟悉ccs绘图与滑块的使用方法-C language sine wave amplitude modulation process can be familiar with this procedure ccs graphics and use the slider
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通信原理实验内容,包括脉冲幅度调制与解调和PSK(DPSK)调制与解调-Communication principle experiment, including pulse amplitude modulation and demodulation and PSK (DPSK) modulation and demodulation
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研究相关瑞利衰落信道上MIMO系统中组合发射机选择合并(SC)/4t-收机最大比合并(MRC)的天线分集系统性能。使用矩生成函数方法,推导相关瑞利衰落信道上采用组合SC/MRC天线分集和相干检测的M 进制相移键控(MPSK),M进制正交幅度调制(MQAM),M 进制脉冲幅度调制(MPAM)等几种M 进制数字调制方式的误符号率精确表达式。数值计算结果阐明相关性和天线阵结构对采用组合SC/MRC天线分集的几种M 进制数字调制方式的平均误符号率性能的影响。-Research related to Ra
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模拟单边带调幅及解调
基本要求:
产生300 ~ 3400Hz的调制信号,画出时域波形及频谱;
产生载波信号,频率自定义,画出时域波形及频谱;
产生加性高斯白噪声,画出时域波形及频谱;
单边调幅,画出叠加噪声后的调制信号和已调信号的波形及频谱;
设计滤波器,画出幅频响应图;
解调,画出解调后的信号时域波形及频谱,并对比分析。
-Simulation of s
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Bit error rate Quature amplitude modulation
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An 8-QAM communications channel simulation in Simulink, constructed from a 16-QAM model and using an I,Q correlation receiver.
QAM (quadrature amplitude modulation) is a method of combining two amplitude-modulated (AM) signals into a single chan
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Bit Error Rate analysis of an Extended Receiver for Rectangular PAM.
The performance of a digital communication system in the presence of additive white Gaussian noise (AWGN) can be assessed by the measurement of the bit error rate (BER). The Si
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LPF Rectangular PAM Communication System.
Pulse-amplitude modulation is widely used in baseband transmission of digital data, with non-baseband applications having been largely superseded by pulse-code modulation, and, more recently, by pulse-p
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利用MATLAB强大的图形处理功能,符号运算功能和数值计算功能,实现连续时间非周期信号频域分析的仿真波形;
1、用MATLAB实现典型非周期信号的频域分析;
2、用MATLAB实现信号的幅度调制;
3、用MATLAB实现信号傅立叶变换性质的仿真波形;
-The use of MATLAB powerful graphics processing capabilities, symbolic computing and numerical computing capabilitie
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基于systemview的 正交幅度调制与解调 通原软件实验-Based on systemview and demodulation of quadrature amplitude modulation experiments through the original software
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Simulink-based Simulation of Quadrature Amplitude Modulation (QAM) System
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defination quadrature amplitude modulation
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模拟幅度调制系统 AM调制与相干解调 DSB调制与相干解调-DSB modulation and coherent demodulation of AM modulation and coherent demodulation of analog amplitude modulation system
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8QAM调制,MATLAB,有完整的星座图,详细的源代码,完整的框图-8QAM modulation, MATLAB, a complete constellation, detailed source code, complete block diagram
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Modulation of signal like amplitude modulation
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lecture notes on amplitude modulation in detail
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Amplitude modulation project.
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16 Quadrature Amplitude Modulation (QAM)
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