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Description: 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
-There are two zip files in the folder. Bpsk_ spread.m and jakesmodel.m Steps for simulatio n : 1] Run jakesmodel.m first 2] Then run bpsk_spre ad.m. 3] Note that during the first run bpsk_spr ead.m has no Rayleigh fading.This is because th e corresponding code has been commented 4] The r esulting performance is stored in BER_awgn. 5] Now uncomment the Rayleigh Fading code in bpsk_ spread.m file. 6] Same time comment BER_awgn (l 112 produced mostly in developed areas) and uncomment BER_ray variable. 7] Run the simulation. To compare the perfromances of the receiver using DSSS plot and the BER_awgn BE R_ray
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Size: 3072 |
Author: 朱振希 |
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Description: 关于zigbee的一篇论文,国外的,写的相当不错,推荐同行的-on a zigbee the papers abroad, the writing is quite good, look at the recommendation of peer
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Size: 1192960 |
Author: 成章 |
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Description: 设计实现了DSSS通信中RAKE接收的功能，包括m序列生成的m文件和一个数据源扩展程序，可以仿真RAKE接收的误码率，便于分析性能！-Design and Implementation of a DSSS communication RAKE receiver functions, including the m sequence generated m file and a data source extension, you can simulation RAKE receiver BER to facilitate analysis of the performance!
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Size: 1024 |
Author: ninghongyu |
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Description: matlab编写的有关直接序列扩频的代码，得出采用DSSS扩频的误码率-matlab prepared by the direct sequence spread spectrum code, come to the use of spread spectrum DSSS BER
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Size: 1024 |
Author: 吴琼 |
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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
Platform: |
Size: 1024 |
Author: hexin |
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Description: 设计一个有干扰的直接序列扩频通信系统， PN码由m序列产生器产生，经过高斯白噪声信道。在接收端接收到的信号包括“有用信号+高斯白噪声+干扰”，将接收信号进行解扩，判决，得到用户的信号检测结果，绘制不同的扩频增益（增益值为10，30，50）下，误比特率随信噪比Eb/N0的变化曲线。-Design of a direct sequence spread spectrum interference system, PN code generated by the m sequence generator, after white Gaussian noise channel. Receives the signal at the receiver, including " useful signal+ Gaussian white noise+ interference" , will receive the signal despreading, judgments, get the user' s signal test results, draw a different spreading gain (gain value of 10,30, 50), the BER curves with the signal to noise ratio Eb/N0.
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Size: 7168 |
Author: 皓月 |
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Description: 分析了在超宽带通信系统中的扩频干扰，并用两种通用的调制技术实现了对提出的抗干扰方法的仿真-he ultra wideband (UWB) interference to direct
sequence spread spectrum (DSSS) receiver is analyzed. Two
popular UWB modulation schemes, the time hopping pulse
position modulation (TH-PPM) and time hopping pulse
amplitude modulation (TH-PAM), are considered. The pulse
repetition rate (T’RR) of UWB signal and the freqnency hand of
the DSSS play the primary roles in the BER performance of the
DSSS receiver in the presence of UWB interference. The UWB
signal parameters raising the interference to DSSS receiver are
discussed. The characteristics of an aggregation of multiple
UWB signals are somehow different from that of a single UWB
device, especially for the TB-PPM scheme, where discrete
spectral lines maybe exist in the band of DSSS receiver. The
system parameters of TH-PPM such as the modulaiion index
and maximum shift incurred hy the time hopping code
determine the amplitude of the discret
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Size: 283648 |
Author: 张洋 |
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Description: WCDMA - simulation of DSSS through QPSK or BPSK, u can change the number of chip per bit to see the BER changing
Platform: |
Size: 3072 |
Author: long |
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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: 简单的直接序列扩频程序，讲座不同信噪比情况下系统的误码率。出于简单考虑，信道噪声采用高斯白噪声。-Simple Direct Sequence Spread Spectrum program, lectures BER SNR. Sake of simplicity, the channel noise Gaussian white noise.
Platform: |
Size: 4096 |
Author: guhui |
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Description: 对于bpsk直扩系统的误码仿真，直扩系统对于功率、频偏、相偏的鲁棒性。-For bpsk DSSS BER simulation systems, direct expansion systems for power, frequency offset, phase offset robustness. .
Platform: |
Size: 1024 |
Author: wangke |
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Description: 采用bpsk调制的直扩通信系统的误码率仿真。可以直接运行，方便初学者使用。-BER modulation using bpsk DSSS communication system simulation. Can be directly run, easy for beginners to use.
Platform: |
Size: 5120 |
Author: 张若愚 |
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Description: 直接序列扩频，信道采用重复编码，2psk调制，针对白噪声，多径环境下的误码率仿真-Direct sequence spread spectrum, channel coding using repeated, 2psk modulation, for white noise, BER simulation of multipath environments
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Size: 23552 |
Author: zy |
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Description: 在多径瑞利衰落信道下，采用理想信道估计，Rake接收，仿真该系统在不同SNR下的信源误比特率性能，分析系统性能-In multipath Rayleigh fading channels, using the ideal channel estimation, Rake reception, simulation of the system at the source under different SNR BER performance, analyze system performance
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Size: 369664 |
Author: chenliang |
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