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Description: 程序仿真了关于扩频系统在两种信道下的误码率-Process simulation of the spread spectrum system in about two channel BER
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Size: 4096 |
Author: tome |
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Description: 直接序列扩频通信系统在AWGN信道下的误码率性能分析-Direct sequence spread spectrum communication system in the AWGN channel BER performance analysis
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Size: 1024 |
Author: hexin |
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Description: 一个四用户的扩频通信系统，扩频增益为N=16，采用Walsh码进行直接序列扩频，BPSK调制，无线信道为AWGN(加性高斯白噪声信道)信道(AWGN信道：不考虑通信信道信号时，由宽频范围描述的统计随机无线噪声。)。在接收端进行解扩，解调，判决，通过仿真得到其中一个用户的误比特率与信噪比的仿真结果。-A four-user spread spectrum communication system, spreading gain for N = 16, using Walsh code Direct Sequence Spread Spectrum, BPSK modulation, channel for AWGN (additive white Gaussian noise channel) channel (AWGN channel: do not consider communication channel signals, described by the scope of broadband wireless random statistical noise.). At the receiving end for despreading, demodulation, judgments, through the simulation to be one of a user' s bit error rate and SNR of the simulation results.
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Size: 9216 |
Author: jehuty |
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Description: bpsk通过噪声信道然后通过双边带调制，然后解调-bpsk through the noisy channel and then through bilateral band modulation, and demodulation
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Size: 38912 |
Author: jia |
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Description: 基于高斯白噪声信道的直接序列扩频，实现效果不错-AWGN-Rayleigh-BPSK-DSSS
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Size: 1024 |
Author: zy |
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Description: AWGN-Rayleigh-BPSK-DSSS AWGN-Rayleigh-BPSK-D-COS207 COS207 COS207
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Size: 107520 |
Author: longliu |
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Description: 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
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Size: 3072 |
Author: seepwq |
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Description: 用matlab编写的bpsk调制的dsss信号-Bpsk written by matlab signal modulation dsss
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Size: 44032 |
Author: 万婷 |
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Description: AWGN-Rayleigh-BPSK-DSSS(BPSK调制解调直接序列扩频系统源代码(白噪声及瑞利衰落误码率比较)并给出误码率曲线的程序-AWGN-Rayleigh-BPSK-DSSS (BPSK direct sequence spread spectrum modulation and demodulation system source code (white noise and Rayleigh fading error rate comparison) and the procedure given BER curves
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Size: 46080 |
Author: 王玉其 |
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Description: 通信课程设计，直扩码的BER-SNR分析，dsss和bpsk调制，包括发送端与接收端，不同的码长在awgn信道下的性能分析。-Communication curriculum design, the DS code BER-SNR analysis, the DSSS, and bpsk modulation, including the sending end and receiving end, the performance of different code length in awgn channel analysis.
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Size: 1024 |
Author: leiasdf |
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Description: Direct sequence spread spectrum (DSSS) communication systems has been widely
used in these years for its advantage of wide spectrum, low working Signal-to-Noise
ratio (SNR), anti-interference, anti-multipath effect and capability of LPI and LPD.
They are increasingly replacing conventional communication forms and obtaining
extensively applications in modern military and commercial communication systems,
for example, CDMA communication system, GPS , measuring and control system,
satellite chain, identification of friend or foe and etc. Therefore, corresponding DSSS
electronic counter technique becomes a big problem to solve in electronic warfare
domain. DSSS electronic counter technique including blind detection, blind parameter
estimation and spreading sequences estimation. For the issue of DSSS electronic
counter technique of DSSS/QPSK signal damaged by strong additive white Gaussian
noise (AWGN), the main research content in this dissertation as follow.
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Size: 2061312 |
Author: yangs |
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Description: 直接序列扩频通信系统的仿真，信道中加入高斯白噪声，扩频比为512，调制方式为BPSK。扩频序列可选m序列或者Gold序列，编码方式可选不编码或者卷积编码。-Simulation of direct sequence spread spectrum communication system, the channel joined the Gaussian white noise, the spreading ratio is 512, the modulation scheme is BPSK. Spreading sequences m sequence or Gold sequence selectable, optional coding or non-coding convolution coding.
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Size: 957440 |
Author: 李岩 |
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Description: 直接扩频通信系统链路仿真，使用m序列，分别经过awgn信道和rayleigh信道，分析误码率性能。-DSSS simulation，with m sequence used，pass through awgn channel and rayleigh channel alternatively.
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Size: 3072 |
Author: 苏靖 |
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Description: 结合理论课讲解基于Matlab产生GOLD序列；
基于Matlab仿真DSSS，绘制GOLD序列自相关、互相关特性曲线；绘制DSSS信号时域、频域曲线；
分析AWGN信道条件下DSSS系统的误码率性能；- combined with the theoretical lesson to explain the generation of GOLD sequence based on Matlab
Based on Matlab simulation DSSS, draw GOLD sequence autocorrelation, cross-correlation characteristic curve draw DSSS signal time domain, frequency domain curve
Analyze the bit error rate performance of DSSS system under AWGN channel condition
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Size: 4096 |
Author: lj |
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Description: dsss multiuser with a awgn and Rayleigh fading
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Size: 57344 |
Author: zienab |
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Description: mutliuser dsss with awgn
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Size: 10240 |
Author: zienab |
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