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M-ary-QAM-in
研究信道噪声对M-ary QAM的影响,适合数字通讯从业者(Effect of channel noise on M-ary QAM in)
- 2015-07-15 09:45:41下载
- 积分:1
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Verilog
说明: 基于FPGA的16QAM调制解调设计,以及仿真实现(Design of 16QAM Modulation and Demodulation Based on FPGA)
- 2021-02-19 16:29:44下载
- 积分:1
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aliasingfilter
1)设计Butterworth型音频抗混叠滤波器;
2)参数:
下通带频率300Hz;上通带频率3400Hz;
下阻带频率280Hz;上阻带频率3600Hz;
通带最大衰减0.3dB;
阻带最小衰减40dB;
3)采用一低通滤波器和一高通滤波器级联;
4)分别确定LPF和HPF的性能指标;
5)求出两滤波器的系统函数和频率响应,并画出其幅频特性曲线;
6)求整个滤波器的系统函数和频率响应,并画出其幅频特性曲线。(1) the design of Butterworth-type audio anti-aliasing filter 2) parameters: passband frequency of 300Hz on pass-band frequency 3400Hz under the stop-band frequency of 280Hz on stop-band frequency 3600Hz passband maximum attenuation of 0.3dB minimum stopband attenuation of 40dB 3) the use of a low-pass filter and a high-pass filter cascade 4) separately to determine the performance of LPF and HPF target 5) to derive two-filter system function and frequency response, and draw its increase frequency characteristic curve 6) for the entire filter system function and frequency response, and draw its amplitude-frequency characteristic curve.)
- 2009-04-08 22:56:06下载
- 积分:1
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fangdiu
蓝牙防丢器,当手机与蓝牙模块超过一定距离时,手机自动报警。(Bluetooth prevention device, when the mobile phone with bluetooth module exceeds a certain distance, mobile phone automatic alarm.)
- 2020-12-19 23:19:09下载
- 积分:1
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verilog_16QAM.rar
使用verilog实现全数字16QAM调制器,载波频率1MHZ,数据比特流的速率为100Kbps,(the modulation of 16QAM based on FPGA)
- 2009-12-07 21:20:07下载
- 积分:1
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PSKuniformFading
PSK Uniform Fading using SNR and BER
- 2009-10-18 18:57:24下载
- 积分:1
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OFDM
说明: OFDM多径信道的仿真和模拟,有效的仿真了多径信道(simulation of OFDM through multipath channel)
- 2019-03-26 19:43:53下载
- 积分:1
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John.Wiley.and.Sons.Essentials.of.Error.Control
第1章 用于可靠数字传输和存储的编码
第2章 代数引论
第3章 线性分组码
第4章 重要的线性分组吗
第5章 循环码
第6章 二进制BCH码
第7章 非二进制BCH码、RS码及其译码算法
第8章 大数逻辑可译码有限几何码
第9章 线性分组码的网络
第10章 基于可靠性的线性分组码软判决译码算法
第11章 卷积码
第12章 卷积码的最优译码
第13章 卷积码的次优译码
第14章 基于网络的软判决译码算法
第15章 级联编码、码分解与多阶段译码
第16章 Turbo编码
第17章 低密度单奇偶校验码
第18章 网络编码调制
第19章 分组编码调制
第20章 纠突发错误码
第21章 纠突发错误卷积码
第22章 自动请求重传(ARQ)策略
附录A 伽罗华域的表
附录B GF(2m)中元素的最小多项式
附录C 长度至2 10-1的二进制本原BCH码的生成多项式
9.6 卷积码
(Error-controlled coding techniques are used to detect and/or correct errors that occur in the message transmission in a digital communications system. Wireless personal channels used by mobile communications systems and storage systems for digital multimedia data all require the implementation of error control coding methods. Demonstrating the role of coding in communication and data storage system design, this text illustrates the correct use of codes and the selection of the right code parameters. Relevant decoding techniques and their implementation are discussed in detail. Providing communication systems engineers and students with guidance in the application of error-control coding, this book emphasizes the fundamental concepts of coding theory while minimising the use of mathematical tools.
* Reader-friendly approach ti coding in communication systems providing examples of encoding and decoding, information theory and criteria for code selection
* Thorogh descriptions of releva)
- 2021-04-26 14:28:45下载
- 积分:1
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ARINC-664P1-1-2006
ARINC-美国航空无线电通信公司(Aeronautical Radio Inc),美国军队的长期合作伙伴。ARINC664系列协议是ARINC公司负责制定的下一代航空数据网络标准。该规范分为8个部分,从不同层次对航空数据网络标准的各个方面进行了系统的定义,形成了以AFDX技术为核心的下一代航空数据网络的完整标准。(ARINC-Aeronautical Radio Inc, the U.S. military long-term partners. ARINC664 series protocol is ARINC company is responsible for the formulation of the next generation of airborne data network standard. This specification is divided into eight parts, from different levels of airborne data network standard all aspects of the definition of the system, formed the AFDX technology at the core of the next generation of airborne data network complete standard.)
- 2020-07-30 22:58:38下载
- 积分:1
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display_signal
基于matlab-GUI制作的数字通信信号的调制仿真,包括时域、功率谱显示,仿真的调制方式有:ASK、FSK、PSK、QPSK、OQPSK、1/4piQPSK、8PSK、MSK,比较直观易懂,可供需要的同胞参考(this process mainly simulate varity of digital signal modulation,such as ASK、FSK、PSK、QPSK、OQPSK、1/4piQPSK、8PSK、MSK)
- 2012-01-06 11:25:35下载
- 积分:1