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Description: 直接序列扩频通信可以有效地抵抗来自信道中的窄带干扰。在一个直扩通信系统中,扩频是通过伪噪声序列(PN)对发送的信息数据进行调制来实现的。在接收端,原伪噪声序列和所收信号的相关运算可将窄带干扰扩展到DS信号的整个频带,使干扰等效为幅度较低频谱较平坦的噪声；同时，将DS信号解扩,恢复原始信息数据。-direct sequence spread spectrum communication can be effective resistance from the channel narrowband interference. In a DSSS system. Spreading through the sequence of pseudo-noise (PN) to send the right message to data modulation to achieve. On the receiving end, the original pseudo-noise sequence and the received signal may be related Operational narrowband interference signal DS extended to the whole band, make tampering equivalent to a lesser extent than the flat spectrum of noise; Meanwhile, the DS signal disspreaded restore the original data.
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Size: 111616 |
Author: 赵艳朝 |
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Description: Direct sequency spread spectrum
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Size: 1024 |
Author: gordon4liu |
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Description: 802.15 dsss 物理协议层方针代码-802.15 dsss physical protocol layer code policy
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Size: 18432 |
Author: zhuo yang |
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Description: 带汉明码的直接序列变换DSSS，直接序列变化中采用了hamm编码方式，带GUI-Hamming codes with the direct-sequence transform DSSS direct sequence changes hamm used in the encoding, with GUI
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Size: 4096 |
Author: 郭复胜 |
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Description: systemview通信仿真软件 实现dsss的系统仿真-Systemview communication simulation software dsss System Simulation
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Size: 10240 |
Author: 宋敬群 |
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Description: DS扩频信号抑制正弦干扰性能仿真程序-DSSS signal sinusoidal interference suppression performance simulation program
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Size: 1024 |
Author: gongchao |
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Description: 扩频通信（DSSS）Matlab仿真程序-Spread Spectrum Communications (DSSS) Matlab simulation program
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Size: 8192 |
Author: 小贝 |
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Description: QPSK_Modulate,DS扩频仿真,QPSK_Demodulate,需要的下吧,大家换换资源.-QPSK_Modulate, DSSS simulation, QPSK_Demodulate required under the bar, everyone leans over toward his absent resources.
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Size: 1024 |
Author: 林宇 |
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Description: 本人收集并经过运行的与直接扩频通信的相关的两个非常好的MATLAB仿真程序！-I collect and run through the DSSS and the associated two very good way MATLAB Order!
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Size: 7168 |
Author: 王炬 |
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Description: DSP2407的外置AD加DSP的M15伪码快速捕获程序,可下载,烧写,可运行-DSP2407 external AD plus the M15 PN code DSP Rapid Acquisition procedures, can be downloaded, programmer, can run
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Size: 34816 |
Author: sss |
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Description: 此代码仿真了一个语音输入输出系统，语音信号经过AD转换后，经过DSSS调制解调后，通过DA转换还原输入的声音，每一步的的波形都可以观测，对实际DSSS系统设计有很大的参考价值-This code simulation of a voice input and output systems, speech signal after AD conversion after DSSS modem through DA conversion to restore the input voice, each step of the waveform can be observed, the actual design of DSSS systems have great reference value
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Size: 416768 |
Author: joshua |
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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 kuopin 讲的是如何产生DS扩频序列，通信领域的朋友可以-matlab kuopin talking about how the DS spread spectrum sequence, communication can be a friend
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Size: 10240 |
Author: 闯闯 |
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Description: 扩频通信直扩通信系统。包括调制，解调。各信号的频谱。-Spread Spectrum Communication DS-SS communication system. Including modulation, demodulation. The signal spectrum.
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Size: 1024 |
Author: triones |
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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
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Size: 5120 |
Author: xionghailiang |
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Description: 直序列扩频仿真，实现传输中干扰抑制的的研究方法-Direct Sequence Spread Spectrum simulation, realize transmission of interference suppression method
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Size: 5120 |
Author: xuxiaodong10 |
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Description: 直接序列扩频Matlab程序
直接序列扩频通信可以有效地抵抗来自信道中的窄带干扰。在一个直扩通信系统中,扩频是通过伪噪声序列(PN)对发送的信息数据进行调制来实现的。在接收端,原伪噪声序列和所收信号的相关运算可将窄带干扰扩展到DS信号的整个频带,使干扰等效为幅度较低频谱较平坦的噪声；同时，将DS信号解扩,恢复原始信息数据。-Matlab procedures for direct sequence spread spectrum direct sequence spread spectrum communications can effectively resist the narrow-band interference from the channel. In a DSSS communication systems, spread spectrum pseudo-noise sequence through (PN) for sending information data modulation is achieved. At the receiving end, the original pseudo-noise sequence and the received signal related to computing can be extended to narrow-band interference signal DS the whole band, so interference is equivalent to a lesser extent than the flat spectrum of noise At the same time, the DS signal despreading and restore original information data.
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Size: 1024 |
Author: 周一 |
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Description: 可以产生PN码序列，可用于直扩通信等需要PN序列的地方。-Can generate PN code sequence, can be used for DSSS communications needs of the local PN sequence.
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Size: 1024 |
Author: renxiaomin |
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Description: 直接扩频系统仿真，使用2BPSK调制。CDMA通信系统仿真的重要部分-Direct Spread Spectrum System Simulation, use 2BPSK modulation. CDMA communication system simulation an important part of
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Size: 1024 |
Author: ruizhifeng |
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Description: 上海数传信息科技有限公司的所有模块使用的都是2.4Ghz频段，直序扩频（DSSS）的通信方式；所有模块本身都具有不可更改的独一无二的，64位的身份编号。它们组成满足不同实际需要的无线数传网络平台-Shanghai digital information technology Co., Ltd. All modules are used in 2.4Ghz band, Direct Sequence Spread Spectrum (DSSS) method of communication all modules themselves can not be changed with the unique, 64-bit identification number. They meet the needs of different composition of the actual needs of the wireless data-transmission network platform
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Size: 193536 |
Author: 郭伟 |
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