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Description: 本应用指南着重探讨了正交调幅 (QAM) 信号的基带解调，特别描述了分数率抽取电路模块的使用。本应用指南也对多相抽取滤波器结构进行了简介，讨论了分数率抽取电路及如何使用Xilinx System Generator 8.1i 实现它，并给出了实现结果。
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Size: 375126 |
Author: sky |
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Description: 用于仿真2，4，8，16，.......任意进制的M-QAM的仿真源代码
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Size: 4220 |
Author: oumiqiu |
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Description: 一个4*8天线数的mimo仿真程序，采用16QAM调制解调，在平坦衰落环境下的误码率情况-a 4* 8 the number of MIMO antenna simulation program using 16QAM modulation and demodulation, the decline in flat environment of the BER
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Size: 2048 |
Author: 张勤 |
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Description: 用于仿真2，4，8，16，.......任意进制的M-QAM的仿真源代码，MATALB编写-for simulation 2,4,8,16, ... arbitrary 229 M-QAM the simulation source code, prepared Aspect
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Size: 2048 |
Author: feitian |
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Description: OFDM仿真
参数：
％ 子载波数 128
％ 位数/ 符号 2
％ 符号数/ 载波 1000
％ 训练符号数 0
％ 循环前缀长度 8 (1/16)*T
％ 调制方式 4-QAM
％ 多径信道数 3
％ IFFT Size 128
％ 信道最大时延 2
-OFDM simulation parameters : % subcarriers median number of 128%/2% Symbol Symbol/Carrier Training 1000% 0% Symbol few cyclic prefix length 8 (1/16)* T% modulation 4-QAM% multi-path channel number 3% 128% Size IFFT letter Maximum delay 2
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Size: 19456 |
Author: 高源 |
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Description: ＯＦＤＭ程序 波形如下
子载波数 128
％ 位数/ 符号 2
％ 符号数/ 载波 100
％ 训练符号数 0
％ 循环前缀长度 8 (1/16)*T
％ 调制方式 4-QAM
％ 多径信道数 3
％IFFT Size 128
％ 信道最大时延 2-OFDM waveform procedures following subcarriers median number of 128%/2% Symbol Symbol/Carrier 100% Training a few symbols 0% cyclic prefix length 8 (1/16)* T% modulation 4-QAM% multi-path channel number 3% IFFT Size 128% maximum delay Channel 2
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Size: 4096 |
Author: 唐成玉 |
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Description: 利用Matlab仿真软件，完成如图1所示的一个基本的数字通信系统。信号源产生0、1等概分布的随机信号，映射到16QAM的星座图上，同时一路信号已经被分成了实部和虚部，后边的处理建立在这两路信号的基础上。实部、虚部信号分别经过平方根升余弦滤波器，再加入高斯白噪声，然后通过匹配滤波器（平方根升余弦滤波器）。最后经过采样，判决，得到0、1信号，同原信号进行比较，给出16QAM数字系统的误码。-Using Matlab simulation software, as shown in Figure 1 to complete a basic digital communications systems. Signal source such as arise over the distribution of 0,1 random signal, is mapped to 16QAM constellation diagram, at the same time all the way the signal has been divided into real and imaginary parts, behind the deal with the establishment of these two signals in the basis. Real part, imaginary part of the signal, respectively, after a square root raised cosine filter, then add white Gaussian noise, and then through the matched filter (square root raised cosine filter). Finally, after sampling, the verdict has been 0,1 signal, to compare with the original signal is given 16QAM digital system error.
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Size: 491520 |
Author: 叶双 |
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Description: 包含RS（10，8）的verilog源程序，加法器的verilog源程序，卷积码的verilog源程序-Contains RS (10,8) of the Verilog source code, the Verilog source code adder, convolution of the Verilog source code
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Size: 1024 |
Author: bai |
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Description: WLAN仿真－发送机
wlan No Comments
设置完系统参数后，开始产生发送数据。
1. 产生随机的发送bit（tx_bits），这里不考虑信道编码。
2. QAM映射
3. 将数据映射到不同载波，形成OFDM符号
4. 产生pilot，并将pilot插入OFDM符号中
5. 加入dc和guard子载波
6. 进行ifft，将频域信号变到时域，并加入循环前缀
7. 对信号进行overlap window
8. 在时域产生short preamble
9. 在时域产生long preamble
10. 将preamble和数据符号组成packet
11. 升采样
得到信道传输的数据Tx_signal_up
具体程序见附件 wlan_transmitter.m-WLAN Simulation- wlan No Comments transmitter system parameters set finished, the beginning to have to send data. 1. Have sent random bit (tx_bits), here does not consider channel coding. 2. QAM mapping 3. The data is mapped to a different carrier to form OFDM symbols 4. Have a pilot, and pilot inserted OFDM symbols 5. Adding dc and guard subcarriers 6. To carry out ifft, will change the frequency domain signal to time domain, and add cyclic prefix 7. the signals overlap window8. In the time domain have a short preamble9. In the time domain have a long preamble10. the preamble and data symbols packet11. or sampling received data transmission channel Tx_signal_up specific procedures see Annex wlan_transmitter.m
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Size: 1024 |
Author: 福东方 |
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Description: 利用matlab仿真软件，实现8QAM调制。在实现时采用正交调幅的方式,某星座点在I坐标上的投影去调制同相载波的幅度,在Q坐标上的投影去调制正交载波的幅度,然后将2个调幅信号相加就是所需的调相信号。-Use of matlab simulation software to achieve 8QAM modulation. In achieving the adoption of quadrature amplitude modulation means of a constellation in the I coordinates of the projection to the modulation of the amplitude-phase carrier, in the Q coordinates of the projection to the range of carrier orthogonal modulation, and then the sum of two AM signals is the required phase modulation signal.
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Size: 1024 |
Author: yanyan |
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Description: it is a OFDM and QAM with dynamically X-QAM mdoulation scheme.
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Size: 2048 |
Author: ali |
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Description: verilog编写的16qam调制程序，将所有东西装入工程，运行mmm16主程序。其中载波为一个周期采十个点，并乘以2^8-1取整数。在quartusII运行通过。-verilog modulation procedures 16qam prepared all things into works mmm16 to run the main program. One carrier for a cycle of 10 points taken, and multiplied by an integer from 2 ^ 8-1. Running through the quartusII.
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Size: 5120 |
Author: 王力宏 |
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Description: 8-Bit Up Down Counter Verilog Code
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Size: 306176 |
Author: gunkaragoz |
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Description: 8发射12接收 16QAM调制 mimo通信系统仿真-8, fired 12 to receive 16QAM modulation mimo communication system simulation
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Size: 1024 |
Author: 韩丹 |
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Description: 文件名 例子说明
1-1.svu 信号的平方
1-2.svu 双边带调幅信号的频谱
3-1.svu 拉普拉斯系统
3-2.svu 三阶系统的根轨迹与波特图计算
4-1.svu AM调制解调
4-2.svu AM 超外差收音机模型
4-3.svu SSB移相法形成
5-1.svu 间接法调频
5-2.svu 阿姆斯特兰朗法调频
5-3.svu FM积分鉴频器的仿真
5-4.svu 声音通过FM传输
6-1.svu 用一阶锁相环实现的FM解调器
6-2.svu 直接式数字锁相环频率合成器
7-1.svu 波形无失真传输的条件
7-2.svu 观察眼图
7-3.svu 观察3元数据的眼图
8-1.svu 2ASK的调幅法生成原理
8-2.svu 幅度键控的OOK法生成
8-3.svu 2ASK（OOK）信号的解调
8-4.svu 2FSK信号产生的两种方法
8-5.svu 2FSK的非相干解调
8-6.svu 2FSK的相干解调
8-7.svu 2PSK(BPSK)与2DPSK调制器
8-8.svu 用科斯塔斯（COSTAS）锁相环恢复2DPSK信号
8-9.svu 2ASK与MASK
8-10.svu 短波8AFSK调制解调器
8-11.svu QPSK信号的解调
8-12.svu QAM调制与解调
8-13.svu MSK调制与解调
9-1.svu 抽样定理：信号的取样与恢复
9-2.svu PCM编码的压缩与扩张
9-3.svu 增量调制-SystemView
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Size: 239616 |
Author: lsp |
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Description: it is a complete project on QAM based OFDM
in which i have developed a GUI first.-it is a complete project on QAM based OFDM
in which i have developed a GUI first.
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Size: 1024 |
Author: YASIR |
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Description: QAM源代码，方便大家使用，谢谢分享，其实我也有点无奈-QAM source code, easy to use you, thank you sharing, in fact, I feel quite helpless
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Size: 1024 |
Author: zhang |
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Description: 8 array QAM design using HDL
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Size: 1024 |
Author: jai |
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Description: 8-QAM and 16-Qam and 32-Qam modulation and demodulation
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Size: 1024 |
Author: hamedvahedian |
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Description: 8. 单径瑞利信道中的四发四收V-BLAST：
(1) 请设计一种具体的导引辅助的信道估计方法，用Simulink进行仿真，测量16QAM调制时的误码率性能。画出比特信噪比与信道估计均方误差的关系曲线，画出比特信噪比与误码率的关系曲线。
-4 Explain the working principle of convolutional encoding and decoding. Please use the Simulink simulation convolutional coding and Viterbi decoding method used to decode, in which the encoding, decoding all 8 single-path Rayleigh channel of the four rounds of four closed V-BLAST: (1) Please design a specific The guide-assisted channel estimation method, using Simulink for simulation, measurement 16QAM modulation bit error rate performance. Draw-bit signal to noise ratio and channel estimation mean square error curve, draw-bit signal to noise ratio and bit error rate curve.
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Size: 125952 |
Author: 童俊贺 |
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