Description: 调制信号的识别，可以通过各种调制的功率谱不同来识别，但这种方法在小信噪比下，性能不好，通过循环功率谱来识别，仿真表明在小信噪比下有很好的性能-modulation signal identification, can be modulated through the power spectrum to identify different, but this approach in a small signal to noise ratio, poor performance, cycle power spectrum to identify, in a small simulation shows a good SNR performance Platform: |
Size: 7139 |
Author:向兔兔 |
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Description: 调制信号的识别，可以通过各种调制的功率谱不同来识别，但这种方法在小信噪比下，性能不好，通过循环功率谱来识别，仿真表明在小信噪比下有很好的性能-modulation signal identification, can be modulated through the power spectrum to identify different, but this approach in a small signal to noise ratio, poor performance, cycle power spectrum to identify, in a small simulation shows a good SNR performance Platform: |
Size: 7168 |
Author:向兔兔 |
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Description: 很好的,装置中阅读器、应答器均具有无线传输功能，频率和调制方式自由选定。不得使用现有射频识别卡或用于识别的专用芯片。装置中的耦合线圈为圆形空芯线圈，用直径不大于1mm的漆包线或有绝缘外皮的导线密绕10圈制成。线圈直径为6.6±0.5 cm（可用直径6.6 cm左右的易拉罐作为骨架，绕好取下，用绝缘胶带固定即可）。线圈间的介质为空气。两个耦合线圈最接近部分的间距定义为D。
阅读器、应答器不得使用其他耦合方式
-Very good device readers, transponders have a wireless transmission function, frequency and modulation freely chosen. Not allowed to use the existing radio frequency identification cards or used to identify a dedicated chip. Coil coupling device for hollow circular coil with a diameter of not more than 1mm of wire or wire insulation jacket 10 around the circle made of Micronesia. Coil diameter of 6.6 ± 0.5 cm (about 6.6 cm in diameter can be used the cans as the skeleton around the well off, can be fixed with insulating tape). Medium between the coil for air. The nearest part of the two coupled coils is defined as the distance D. Readers, transponder coupling should not be used in other ways Platform: |
Size: 312320 |
Author:liyue |
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Description: 有关于相位，频率，等数字调制技术识别的MATLAB代码，-Have on the phase, frequency, and other digital modulation techniques to identify the MATLAB code, Platform: |
Size: 10240 |
Author:shirley |
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Description: 在工程里识别不同FSK和PSK的三阶循环特性的程序，其中最著名的算法！看通信调制识别的人一定看得懂-In engineering in different FSK and PSK to identify the third-order cycle characteristics of the procedures, most notably the algorithm! Modulation recognition of communication to see people must understand Platform: |
Size: 131072 |
Author:fuhaitao |
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Description: 循环谱分析信号的主要方法介绍，针对BPSK调制的信号进行检测识别并进行参数估计的原程序-Cyclic spectrum analysis of signals in the primary means of introduction, for BPSK modulation signal detection and parameter estimation to identify the original procedure Platform: |
Size: 2048 |
Author:quxiaokang |
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Description: 对TC9012 (长虹 K8B )遥控器的解码- 这种遥控码具有以下特征,采用脉宽调制的串行码
解码的关键是如何识别“0”和“1”，从位的定义我们可以发现“0”、“1”均以0.56ms的低电平开始，
不同的是高电平的宽度不同，“0”为0.56ms,“1”为1.68ms, 所以必须根据高电平的宽度区别“0”和“1”。
如果从0.56ms低电平过后，开始延时，0.56ms以后，若读到的电平为低，说明该位为“0”，反之则为“1”，-On the TC9012 (Changhong K8B) remote control decoder- a remote control code has the following characteristics, using pulse width modulation decoder serial code, the key is how to identify Platform: |
Size: 10240 |
Author:张廷 |
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Description: 以前常有的调制识别程序大多是基于MATLAB的，本程序是基于C语言的实用程序，可以识别AM、FM、DSB、LSB、USB、CW、Noise等模拟调制信号的调制类型，是在实际工程中正在应用的实用程序！-Previous common modulation identification procedures are mostly based on MATLAB, and this program is based on the C language utility can identify the AM, FM, DSB, LSB, USB, CW, Noise and other analog modulation signal modulation type is the actual project utilities are being applied! Platform: |
Size: 5120 |
Author:haobenjian |
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Description: 识别不同的调制方式，例如AM，psk等。-Identify the different modulation methods, such as AM, psk and so on. Platform: |
Size: 4254720 |
Author:yezi2009 |
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Description: 装置中阅读器、应答器均有无线传输汉字的功能，载波频率≤5MHz，调制方式任选。不得使用现有射频识别卡或用于识别的专用芯片。装置中的耦合线圈为圆形空芯线圈，用直径不大于1mm的漆包线或有绝缘外皮的导线密绕10圈制成。线圈直径为6.6±0.5cm（可用直径6.6 cm左右的易拉罐作为骨架，绕好取下，用绝缘胶带固定即可）。线圈间的介质为空气。两个耦合线圈最接近部分的间距定义为D。
阅读器、应答器只能使用耦合线圈耦合，不得使用其他耦合方式。
阅读器采用外接单电源供电，具有通过无线方式实现“写”与“读”汉字的两种工作模式，由开关或键盘实现 “写”或“读”的控制。“写”状态，输入用键盘，并有显示屏显示输入的汉字。“读”状态，显示屏显示应答器接收的汉字。
应答器供电要求有两种方式，一是采用两节1.5V，5号干电池供电，另一是通过耦合线圈由阅读器无线方式提供。应答器能够通过无线方式接收、存储由阅读器传来的预置汉字信息（或编码），装置断电后，应答器存储的信息不丢失。应答器能通过无线方式读出由阅读器传输来的汉字。应答器还应设有对写入汉字信息进行擦除的功能键。
预置汉字范围为二级汉字或液晶显示器汉字库范围。
-Devices, reader, transponder features of Chinese characters have a wireless transmission, carrier frequency ≤ 5MHz, modulation optional. Shall not use the existing radio frequency identification cards or used to identify a dedicated chip. The coupling device for a circular coil air-core coils, with diameters less than 1mm of the enameled wire or wire insulation jacket made of dense around the 10 laps. Coil diameter of 6.6 ± 0.5cm (about 6.6 cm in diameter can be used cans as a skeleton around the well removed, can be fixed with insulating tape). The medium is air between the coils. Two coupling coils closest to the part of the pitch is defined as D.
Reader, can only use the transponder coupling coil coupling shall not be used in other coupling methods.
Reader with a single external power supply, with a wireless way to achieve "write" and "reading" Chinese characters are two kinds of working mode switch or the keyboard to achieve by the "write" or "read" control. "Write" state, inpu Platform: |
Size: 3857408 |
Author:xiexie |
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Description: 本文深入研究了复杂调制信号MPSK、MQAM的倍号子类以及常用恒包络信
号OQPSK、or／4 QPSK、MSK的调制识别披本。在鳆种基本调制识别方法即基于特征提取的方法和基于最大似然的方法的纂础上采用四种算法分别对上述信号进行识别研究。-This article studies the complex modulation signals MPSK, MQAM number of times and the common sub-class of constant envelope signals OQPSK, or/4 QPSK, MSK modulation recognition of this disclosure. Abalone species in the basic modulation recognition method that is based on feature extraction methods and maximum likelihood methods based on the Article on the foundation of four algorithms to identify each of these signals. Platform: |
Size: 2275328 |
Author:klq |
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Description: 通信信号的调制信息包含在信号的瞬时幅度、相位、频率的变化之中，不同的信号其频谱也呈现不同的特征，通过提取瞬时幅度、相位、频率以及频谱的参数统计特征，可以识别不同的通信信号。通常是利用对瞬时幅度、瞬时相位，瞬时频率和信号功率谱进行某种变换而得到可以明显区分各种信号的特征参数。-Communication signal modulation information is contained in the signal instantaneous amplitude, phase, frequency changes, the spectrum of different signals also show different characteristics, by extracting the instantaneous amplitude, phase, frequency and statistical characteristics of the parameters of the spectrum, you can identify different communication signals. Usually by the use of instantaneous amplitude, instantaneous phase, instantaneous frequency and signal power spectrum a transformation which can be clearly distinguished by the characteristic parameters of various signals. Platform: |
Size: 4096 |
Author:JIA |
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Description: 在MATLAB中使用决策论的方法进行调制方式识别，可以识别AM，FM,USB,LSB,ASK,PSK,FSK等多种调制方式-In MATLAB using the decision theory approach to modulation recognition, you can identify the AM, FM, USB, LSB, ASK, PSK, FSK modulation and other Platform: |
Size: 1024 |
Author:黄瓜 |
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Description: 主要介绍了正交振幅调制的相关知识，包括如何识别-Mainly introduced the quadrature amplitude modulation related knowledge, including how to identify Platform: |
Size: 1082368 |
Author:ouyang |
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Description: this document present three algorithms to identify the type of modulation in digital communication. Platform: |
Size: 2542592 |
Author:Ines |
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Description: this document present three algorithms to identify the type of modulation in digital communication. Platform: |
Size: 2167808 |
Author:Ines |
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Description: this document present three algorithms to identify the type of modulation in digital communication. Platform: |
Size: 323584 |
Author:Ines |
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Description: this document present three algorithms to identify the type of modulation in digital communication. Platform: |
Size: 1724416 |
Author:Ines |
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Description: 常用数字信号调制方式识别研究 对几种信号进行区分-Commonly used digital signal modulation recognition research to distinguish between several signals Platform: |
Size: 1463296 |
Author:赵雪 |
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Search - modulation identify