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程序
说明: 1、基带码型仿真
(1)通过仿真观察占空比为50%、 75%以及100%的单、
双极性归零码波形以及其功率谱,分析不同占空比对
仿真结果的影响。
(2) 通过仿真产生一随机消息码序列,将其分别转换为
AMI码和HDB3码,观察它们的波形及其功率谱密度。
2、数字带通调制系统仿真
设计一个采用2ASK( OOK) 调制的数字通信系统:
产生二进制随机数据,并仿真其对应的2ASK调制波形,
分析其频谱。所产生的调制波形加入不同信噪比的白噪声,
选取合适的接收方案,画出系统误码率曲线,并与理论误
码率进行对比。(1.Baseband pattern simulation
2. Simulation of digital band-pass modulation system)
- 2020-06-29 07:20:01下载
- 积分:1
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bpsk_Awagn_Rayleigh
说明: 实现了一个直接扩频系统,使用BPSK作为调制解调方法。并比较白噪声AWGN及瑞利衰落(rayleigh fading)环境下,误码率的影响。(There are two files in the zip folder. bpsk_spread.m and jakesmodel.m
Steps for simulation:
1] Run jakesmodel.m first
2] Then run bpsk_spread.m .
3] Note that during the first run bpsk_spread.m has no rayleigh fading.This is because the corresponding code has been commented
4] The resulting performance is stored in BER_awgn.
5] Now uncomment the Rayleigh Fading code in bpsk_spread.m file.
6] Same time comment BER_awgn (line 112) and uncomment BER_ray variable.
7] Run the simulation.
To compare the perfromances of the receiver using DSSS plot the BER_awgn and BER_ray
>>semilogy([1:8],BER_awgn(1:8), g* )
hold on
semilogy([1:8],BER_ray(1:8), -.b* )
hold on
grid on )
- 2010-03-22 23:11:17下载
- 积分:1
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RS_BCH
说明: 本压缩包收集了较为经典的几种关于BCH和RS编译码的matlab程序,以及通信系统的仿真等。供大家参考学习,搬运整理而得(This compression package collects several classical matlab programs about BCH and RS coding and decoding, as well as the simulation of communication system. For your reference and study, handling and sorting out)
- 2019-05-02 18:00:48下载
- 积分:1
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012061034
实现多项式的加法和减法
并且实现一个多项式的运算(Realize polynomial addition and subtraction and the realization of a polynomial operator)
- 2008-07-06 21:15:34下载
- 积分:1
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OTFS_sample_code
说明: The reference communication system for Orthogonal Time Frequency Space modulation
- 2020-12-22 00:00:33下载
- 积分:1
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LDPC
说明: 实现LDPC信道码的仿真,已在大型软件开发项目中实用(LDPC code and decode
matlab)
- 2020-11-30 16:47:58下载
- 积分:1
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波束形成
说明: 单频、宽带信号的线阵、面阵波束形成,用的是fft能量或者幅度求和的做法(Beamforming of linear array and area array for single frequency and broadband signals)
- 2020-09-28 13:48:01下载
- 积分:1
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simulink
关于通信系统的simulink仿真,包括基本介绍,数字信号传输,信道编码,OFDM方式,MIMO系统仿真(On the communication system simulink simulation, including a basic introduction to digital signal transmission, channel coding, OFDM mode, MIMO system simulation)
- 2013-10-14 10:41:04下载
- 积分:1
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MskModem
说明: MSK信号的调制与解调,根据书上的代码进行了修改,非常详细(Modulation and demodulation of MSK signal)
- 2020-05-07 10:46:55下载
- 积分:1
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am,pam等信号
详细分类介绍了AM,BPSK,BFSK,PAM信号的循环谱与循环自相关函数的生产,具有可操作性。(The production of cyclic spectrum and cyclic autocorrelation function of AM, BPSK, BFSK and PAM signals is introduced in detail, and it is operable.)
- 2018-05-03 09:06:27下载
- 积分:1