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Description: 在DSP中实现16QAM，其中使用了一定的汇编语言和c语言，但运行效率很高
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Size: 281623 |
Author: bupt_liugang |
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Description: 在无线网络的接收机端，对16进制的正交幅度调制信号进行软解调， 这种软解调方式比硬解调会提高2-3dB-Receiver in the wireless network client on the 16-band signal of the quadrature amplitude modulation demodulator soft, this soft than hard demodulation demodulator will increase 2-3dB
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Size: 198656 |
Author: 白雪 |
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Description: 该文件包内包含了一个16QAM调制解调程序，信道为AWGN信道-The document package includes a 16QAM modulation and demodulation process, channel for the AWGN channel
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Size: 251904 |
Author: wuchunde |
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Description: 模拟16QAM调制解调过程（在AWGN信道条件下）-Simulation of 16QAM modulation and demodulation process (in AWGN channel conditions)
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Size: 129024 |
Author: 逍遥 |
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Description: 采用C++语言进行16qam通信系统仿真，实现速度快-Using C++ language 16QAM Communication System Simulation, achieve faster
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Size: 229376 |
Author: 赵铮铮 |
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Description: 16QAM解调程序原代码（用C语言编写的）-16QAM demodulation process the original code (using C language)
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Size: 3072 |
Author: 要风雨还是彩虹 |
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Description: 16QAM解调器的C语言实现，软解调，希望对大家有帮助-16QAM demodulator of the C language, soft demodulation, we want to help
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Size: 394240 |
Author: 毕道旭 |
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Description: Rayleigh信道中的误码率仿真源代码下载-Description This program simulates the bit-error-rate (BER) performance of Orthogonal space time block code over Rayleigh fading channel with L=4 TX antennas and M=1 RX antenna
The code has been developed for real orthogonal design and code rate 1/2
modulation- 16 QAM with gray coding resulting in 2 bits/sec/Hz.
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Size: 4096 |
Author: 方益波 |
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Description: 有关4QAM，16QAM，64QAM，DQPSK的调制解调的-The 4QAM, 16QAM, 64QAM, DQPSK modulation and Demodulation
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Size: 453632 |
Author: dick |
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Description: 通訊系統中的調變，將原本binary的資料map into 16QAM 星座圖。-The modulation method of communication system. This document is 16QAM. 16QAM transforms binary data into 16-point constelations.
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Size: 215040 |
Author: 陳偉翔 |
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Description: matlab ofam 16qam 信道仿真-matlab ofam 16qam
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Size: 201728 |
Author: zhaolei |
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Description: 16QAm c语言开发的实例 学习通信的要仿真实例-16QAm c language development to be instances of communication simulation study
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Size: 1024 |
Author: zhufang |
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Description: C语言编写的16qam调制解调程序，简单易懂！-C language program written in 16qam modem, easy to understand!
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Size: 4096 |
Author: 郭海青 |
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Description: 一种基于CCS的调制算法，C语言实现，简单适用-Modulation algorithm based on CCS, C language, a simple application
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Size: 19456 |
Author: Trek |
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Description: 16 QAM for c++ to download
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Size: 129024 |
Author: adilo |
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Description: QAM是英文Quadrature Amplitude Modulation的缩略语简称，意为正交幅度调制，是一种数字调制方式。[1]
16QAM是指包含16种符号的QAM调制方式。
16QAM 调制解调原理方框图
如右图：
16QAM 是用两路独立的正交 4ASK 信号叠加而成，4ASK 是用多电平信号去键控载波而得到的信号。它是 2ASK 体制的推广，和 2ASK 相比，这种体制的优点在于信息传输速率高。
正交幅度调制是利用多进制振幅键控（MASK）和正交载波调制相结合产生的。
16 进制的正交振幅调制是一种振幅相位联合键控信号。16QAM 的产生有 2 种方法：
（1）正交调幅法，它是有 2 路正交的四电平振幅键控信号叠加而成；
（2）复合相移法：它是用 2 路独立的四相位移相键控信号叠加而成。
这里采用正交调幅法。16QAM 正交调制的原理如下图 1 所示。
图1 16QAM 调制器
图中串/并变换器将速率为Rb的二进制码元序列分为两路,速率为Rb/2.2-4电平变换为Rb/2 的二进制码元序列变成速率为RS=Rb/log216 的 4 个电平信号,4 电平信号与正交载波相乘,完成正交调制,两路信号叠加后产生 16QAM信号.在两路速率为Rb/2 的二进制码元序列中,经 2-4 电平变换器输出为 4 电平信号,即M=16.经 4 电平正交幅度调制和叠加后,输出 16 个信号状态,即 16QAM.
RS=Rb/log216=RB/4.
2. 16QAM 解调原理
16QAM 信号采取正交相干解调的方法解调，解调器首先对收到的 16QAM 信号进行正交相干解调，一路与 cos ω c t 相乘，一路与 sin ω c t 相乘。然后经过低通滤波器，低通滤波器 LPF 滤除乘法器产生的高频分量，获得有用信号，低通滤波器LPF 输出经抽样判决可恢复出电平信号。
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Size: 10608 |
Author: 2294539427@qq.com |
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Description: Considered a 16QAM communication system. The information rate is 2 Mb/s and the
carrier frequency is 12 GHz. Assumed perfect synchronization.
a) Simulated the system if the channel is AWGN and draw bit error rate of the system
versus Eb/No. Compare the results with what you obtain in theory.
b) Considered (15,11) Hamming code. Apply this code into the above system.
Compare the results with what you obtain in theory.
c) Simulated uncoded system if we have a Doppler Spread due to mobile movement
in the channel. Simulate and draw the bit error rate of the system for maximum
mobile speed 42.3 Km/Hour. No equalizer is used in the system.
d) Applied coding of part (b) into the system of part (c). Simulate the system and
discuss the results.
e) Designed an interleaver for the system of part (d) to improve the coded performance
results. Simulated the system.
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Size: 1068032 |
Author: GURJOT SINGH |
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Description: BPSK、QPSK、16QAM、64QAM的C++仿真代码。-The C++ codes for the simulation of bpsk, qpsk, 16qam and 64qam.
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Size: 5120 |
Author: zhenggtao |
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Description: 基于C语言编程的matlab 16QAM仿真源代码(use C based on matlab 16QAM source code)
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Size: 2048 |
Author: tcf8426
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Description: 16QAM解调程序原代码用C语言编写的()
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Size: 2048 |
Author: nefachorxng
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