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test4
- 实现数字信号的QPSK调制,并绘制频谱图-QPSK modulation of digital signal, and map spectrum
signal
- 信号处理相关函数及作图(时域图和频域图) 包括AM、DSB、SSB、ASK、MASK、QPSK等-signal functions including AM、DSB、SSB、ASK、MASK、QPSK
oqpsk
- 使用m语言对OQPSK调制方式进行仿真模拟,可以得到OQPSK调制前后以及加噪前后基带信号对比、频谱对比、星座图和误码率-您是不是要找: 使用c语言对QPSK调制方式进行仿真模拟,可以得到OQPSK调制前后以及加噪前后基带信号对比、频谱对比、星座图和误码率 Use m language OQPSK modulation system simulation, you can get around the OQPSK modulation, and baseband signal plus no
USRP-Packet-Receiver
- labview实现USRP收发机接受信号的仿真实现,其中包括BPSK,QPSK,8PSK,16PSK,OQPSK等多种调制模式-labview achieve USRP transceivers achieve acceptable signal simulation, including BPSK, QPSK, 8PSK, 16PSK, OQPSK modulation modes and other
USRP-Packet-Transmitter
- labview实现USRP信号收发机发送仿真,其中包括BPSK,QPSK,8PSK,16PSK,OQPSK等多种调制模式-labview achieve USRP transceivers transmit signal simulation, including BPSK, QPSK, 8PSK, 16PSK, OQPSK modulation modes and other
SNR
- AWGN信道下,QPSK的数字调制与解调包括误码率、误比特率和星座图及信号接收端分布图。-AWGN channel, QPSK digital modulation and demodulation include bit error rate, bit error rate and constellation and signal receiving terminal distribution.
psk
- 1.先运行2_28_1再运行3_3_1判断PSK调制方式,得到精确频偏以及符号速率(这里只针对QPSK) 2.根据精确载频以及符号速率运行3_3_2进行匹配滤波 3. 3_3_2进行QPSK解调 4. 未给定信号-1. First Run 2_28_1 run 3_3_1 judge PSK modulation scheme to obtain accurate frequency offset and symbol rate (here only for QPSK) 2. dep
Direct-sequence-spread
- 发射机的设计是采用m序列来扩展二进制数据流,将其扩频为宽频信号,并采用QPSK调制方式将信号调制后发送出去。信号经过AWGN信道传输到接收端。接收机采用相干解调原理解调信号,采用的解扩码序列与发射机扩频码序列完全相同,信号经解扩调制后,带宽恢复原始宽度。-Transmitter design is the use of m sequence to expand the binary data stream, the spread spectrum is a broadband signal, a
OPSKsimulink
- simulink环境里实现OPSK信号的调制解调,亲自测试通过,大家可以直接下载使用。-simulink environment to achieve QPSK signal modulation and demodulation, personally tested, you can direct download.
mcifangpu
- M次方谱估计可以同时估计psk信号的码元速率和载波频率。mpsk函数和test_signal在cwt压缩包内。-M th spectral estimation can estimate the symbol rate and carrier frequency qpsk signal. mpsk function and test_signal in cwt compressed package.
pingfangbaoluo
- 基于平方包络的PSK 信号的码元速率估计。-Symbol rate is estimated based on square envelope QPSK signal. mpsk function and test_signal in cwt compressed package.
mpsk
- 多相制信号常用的产生方法有:直接调相法及相位选择法。在M进制数字相位调制中,四进制绝对移相键控(4PSK,又称QPSK)用的最为广泛,下面以 四进制绝对移相键控(4PSK,又称QPSK)为例-Multi phase signal methods commonly used are: direct modulation method and phase selection method. In M band digital phase modulation, the four absolute p
MPSK
- MPSK Simulation BPSK QPSK 8PSK调制信号的仿真-MPSK Simulation BPSK QPSK 8PSK
ercipu
- BPSK、QPSK、8PSK信号的二次铺和四次谱的实现-BPSK, QPSK, the second spread spectrum and achieve four 8PSK signals
QPSK_generator
- 模拟实际工作环境,使用Matlab产生四相位键控调制信号QPSK-QPSK modulation
main_no_offset_2
- 假设截获了一段短波数字通信的信号,要求解调出最终的信息,每组解调出来后,将10组信息组合起来,恢复最终的信源输出数据。 先验信息:两组数据文件,编号为1、2,每组I、Q两路存放,格式为“int16”,采样率为9600Sa/s,其中第一组为单径情况,第二组为多径情况。 参数符合MIL-STD-188-110A标准; 同步序列为syn=seq.dat,BPSK调制; 接收机频率稳定度高于1e-6。 文件中有效信息总长度为333.75s,其中同步头长为5/12s,每时隙1/6s,训
QPSK4
- 描述了QPSK的基带信号的调制过程,适合于初学者- It describes a process QPSK modulation baseband signal, suitable for beginners
assign1
- 1. 基于simulink搭建一个QPSK发送链路,QPSK调制信号经过了瑞利衰落信道,观察信号经过衰落前后的星座图,观察信道特性。仿真参数:信源比特速率为500kbps,多径相对时延为[0 4e-06 8e-06 1.2e-05]秒,相对平均功率为[0 -3 -6 -9]dB,最大多普勒频移为200Hz。-1. Based on simulink structures, QPSK sent a link, the Rayleigh fading channel after the QPSK m
FPGA_QPSK
- 本设计是基于FPGA技术来实现QPSK 数字调制传输系统。通过VHDL语言基于 FLEXlOK芯片完成了QPSK数字调制系统 的调制与解调模块、位同步信号恢复模块、 帧同步信号提取模块,数据采集模块、数据 恢复等模块的设计与仿真。-This design is based on FPGA technology to achieve QPSK Digital modulation transmission system. Based on the VHDL language
G_QPSK
- 假定接收端已经实现载波同步,位同步(盲信号解调重点要解决的问题:载波同步(costas环(未见到相关代码)),位同步(Gardner算法(未见相关代码)),帧同步)-Generating QPSk signal, assuming that the receiver has to achieve carrier synchronization, bit synchronization (blind signal demodulation focus to solve the problem: c