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Description: M-file for simulating a QPSK transmitter by modulating with a pseudo random bit stream. A serial to parallel conversion of the pseudo random bit stream is performed with mapping of two bits per symbol. A cosine and sine carrier is configured and the I and Q symbols modulate these carriers. The I and Q carriers are combined and time and frequency domain plots are provided showing key waveforms at various positions in the QPSK transmitter.
-M-file for simulating a QPSK transmitter b y modulating with a pseudo random bit stream. A s erial to parallel conversion of the pseudo rand om bit stream is performed with mapping of two bi ts per symbol. A cosine and sine carrier is CBMs gured and the I and Q symbols Modulate these CARR IERS. The I and Q carriers are combined and a time nd frequency domain plots are provided showing key waveforms at various positions in the QPSK t ransmitter.
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Size: 2170 |
Author: xiaoying |
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Description: M-file for simulating a QPSK transmitter by modulating with a pseudo random bit stream. A serial to parallel conversion of the pseudo random bit stream is performed with mapping of two bits per symbol. A cosine and sine carrier is configured and the I and Q symbols modulate these carriers. The I and Q carriers are combined and time and frequency domain plots are provided showing key waveforms at various positions in the QPSK transmitter.
-M-file for simulating a QPSK transmitter b y modulating with a pseudo random bit stream. A s erial to parallel conversion of the pseudo rand om bit stream is performed with mapping of two bi ts per symbol. A cosine and sine carrier is CBMs gured and the I and Q symbols Modulate these CARR IERS. The I and Q carriers are combined and a time nd frequency domain plots are provided showing key waveforms at various positions in the QPSK t ransmitter.
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Size: 28915 |
Author: xiaoying |
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Description: M-file for simulating a QPSK transmitter by modulating with a pseudo random bit stream. A serial to parallel conversion of the pseudo random bit stream is performed with mapping of two bits per symbol. A cosine and sine carrier is configured and the I and Q symbols modulate these carriers. The I and Q carriers are combined and time and frequency domain plots are provided showing key waveforms at various positions in the QPSK transmitter.
-M-file for simulating a QPSK transmitter b y modulating with a pseudo random bit stream. A s erial to parallel conversion of the pseudo rand om bit stream is performed with mapping of two bi ts per symbol. A cosine and sine carrier is CBMs gured and the I and Q symbols Modulate these CARR IERS. The I and Q carriers are combined and a time nd frequency domain plots are provided showing key waveforms at various positions in the QPSK t ransmitter.
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Size: 2048 |
Author: xiaoying |
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Description: M-file for simulating a QPSK transmitter by modulating with a pseudo random bit stream. A serial to parallel conversion of the pseudo random bit stream is performed with mapping of two bits per symbol. A cosine and sine carrier is configured and the I and Q symbols modulate these carriers. The I and Q carriers are combined and time and frequency domain plots are provided showing key waveforms at various positions in the QPSK transmitter.
-M-file for simulating a QPSK transmitter b y modulating with a pseudo random bit stream. A s erial to parallel conversion of the pseudo rand om bit stream is performed with mapping of two bi ts per symbol. A cosine and sine carrier is CBMs gured and the I and Q symbols Modulate these CARR IERS. The I and Q carriers are combined and a time nd frequency domain plots are provided showing key waveforms at various positions in the QPSK t ransmitter.
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Size: 28672 |
Author: xiaoying |
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Description: it is a matlab code for producing qpsk waveforms
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Size: 1024 |
Author: c2 |
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Description: QPSK调制解调，包括波形，误码率，并加入时延，以前做的实验，可以作为参考。-QPSK modulation and demodulation, including waveforms, error rate, and add delay, before doing the experiment, can be used as reference.
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Size: 6144 |
Author: 吴利平 |
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Description: simulates a digital communication system
with QPSK signal waveforms in Fig-simulates a digital communication system
with QPSK signal waveforms in Fig.7.7
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Size: 1024 |
Author: Snoweternal |
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Description: 本仿真程序对一串二进制信息进行QPSK调制，并画出其波形图和功率谱，在某种无线AWGN信道上进行传输，然后并在接收端进行解调，最后画出其误符号性能曲线-The simulation program for a string of binary information in QPSK modulation, and draw the waveforms and power spectrum, in some wireless AWGN channel for transmission, and then demodulates at the receiving end, the final draw its symbol error performance curve
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Size: 186368 |
Author: gudeyi |
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Description: QPSk的仿真程序，包括AWGN信道和瑞利信道波形以及星座图-QPSk simulation procedures, including the AWGN channel and Rayleigh channel waveforms as well as the constellation diagram
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Size: 1024 |
Author: 孙杰 |
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Description: 采用matlab产生信号波形，实现QPSK编码。-Waveforms generated by matlab to achieve QPSK encoding.
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Size: 3152896 |
Author: 上品杰 |
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Description: Altem公司quartus
II 8．1开发环境下，完成了中频全数字解调器的FPGA实现，并对数
字下变频、载波同步、位同步等解调器的核心模块设计进行了详细的分析和说明，给出
了实现框图和仿真波形。同时在本设计中应用了Altera公司的NiosII软核处理器技术，
用于载波的大频偏校正和解调器各个部分的监测和控制。最后给出了QPSK中频全数字
解调器关键性能指标的测试方法和测试结果，测试结果表明本设计达到了预期的性能指
标要求。-The Algorithm is converted to HDL description for FPGA realization．The designs of the core Modules of demodulator, including digital down-conversion，carrier ring，bit synchronization loop design, are described in detail．And a block diagram and simulated waveforms are provide in the latter part．Also the soft-core processor technology of Altera’s NiosII is applied in the design for carrier frequency offset correction and the monitoring and control of the separate parts of demodulator．Finally, the test methods and results of key performance indicators of the IF Demodulator QPSK are given to show that the design given in this paper can reach the performance requirements expected.
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Size: 4328448 |
Author: zhuimeng |
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Description: QPSK信号MATLAB仿真，分别有波形为滚降波形（载频为5Hz，符号速率为1Baud）和波形为矩形波（载频为5Hz，符号速率为1Baud）两种波形形成的仿真。以及误比特率性能曲线、星座图。
-MATLAB simulation of the QPSK signal, respectively, the waveform for the roll-off waveform (carrier frequency 5Hz, the symbol rate for 1Baud) and the waveform is a rectangular wave (carrier frequency of 5Hz, the symbol rate for 1Baud) simulation of the formation of the two waveforms. And bit error rate performance curve, the constellation diagram.
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Size: 3072 |
Author: 胡潇 |
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Description: QPSK调制分别显示I路Q路的波形和合成的波形-QPSK modulation show I Lu Q, the waveforms and synthetic waveforms
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Size: 1024 |
Author: 保护满 |
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Description: 基于MATLAB的数字频带通信系统的仿真 使用MATLAB中M语言完成QPSK的仿真 通过仿真得到QPSK和OQPSK信号经过带通后的波形-QPSK simulation based on the the MATLAB digital band communication system simulation using MATLAB M language QPSK and OQPSK signals after band-pass waveforms obtained by simulation
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Size: 1250304 |
Author: 宫瑾 |
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Description: 通信系统与仿真作业：
1）设计π/4-DPSK或16-QAM调制器仿真程序， 画出时域波形、 正交分量、同相分量波形，眼图，散点图等。
2）利用MATLAB进行DPSK在高斯信道下的BER性能仿真，并将结果与PSK性能进行比较。
3）已知 OFDM的数据传输速率为19.2Kbps， OFDM 符号长度为320，保护间隔为32点，子载波数为128，IFFT/FFT点数为256，载波频率320KHz，调制方案采用QPSK，仿真其在高斯信道下的BER性能。
-Communication systems and simulation tasks: 1) Design π/4-DPSK or 16-QAM modulator simulation program, draw time-domain waveform, quadrature component, in-phase component waveforms, eye diagrams, scatter plots, etc. 2) the use of MATLAB for DPSK in AWGN channel BER performance simulation, and the results are compared with PSK performance. 3) the known OFDM data transmission rate of 19.2Kbps, OFDM symbol length is 320, the guard interval is 32 points, the number of sub-carriers 128, IFFT/FFT points is 256, the carrier frequency is 320KHz, using the modulation scheme QPSK, simulation of the in Gaussian channel BER performance.
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Size: 268288 |
Author: wander |
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Description: qpsk的调制解调仿真与仿真波形图，采用了相干解调方法-qpsk modem emulation and simulation waveforms, using coherent demodulation method
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Size: 2048 |
Author: 张宇 |
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