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Description: This project aim was to build wireless software modem for data communication
between two computers using an acoustic interface in the voice frequency range (20Hz–
20,000Hz). The transmitting antenna is a speaker (frequency response of: 90Hz –
20,000Hz) and the receiving antenna is a microphone (frequency response of: 100Hz –
16,000Hz). The test files used as information files were text files.
This goal was attained both in an incoherent scheme and in a coherent scheme.
Build under Matlab code, our modem uses OFDM (orthogonal frequency division
multiplexing) modulation, synchronization by LMS sequence, channel estimation (no
equalizer) via pilot tones. The symbols are either PSK or ASK for a constellation size of
2 or 4. To optimize the probability of error, these symbols were mapped using Gray
mapping.
Report
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Size: 559541 |
Author: buyop |
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Description: 专门采色用的JAVA原代码 代码1。在屏幕上输出当前鼠标所在的屏幕颜色。 代码2。使用一个GUI，输出当前鼠标所在的屏幕颜色，并改变GUI的背景色。-specialized incoherent with the Java source code 1. On the screen output current mouse where the color screen. Code 2. The use of a GUI, the mouse where the output current color screen, and change the background color GUI.
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Size: 1313 |
Author: 辛星 |
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Description: 专门采色用的JAVA原代码 代码1。在屏幕上输出当前鼠标所在的屏幕颜色。 代码2。使用一个GUI，输出当前鼠标所在的屏幕颜色，并改变GUI的背景色。-specialized incoherent with the Java source code 1. On the screen output current mouse where the color screen. Code 2. The use of a GUI, the mouse where the output current color screen, and change the background color GUI.
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Author: 辛星 |
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Description: This project aim was to build wireless software modem for data communication
between two computers using an acoustic interface in the voice frequency range (20Hz–
20,000Hz). The transmitting antenna is a speaker (frequency response of: 90Hz –
20,000Hz) and the receiving antenna is a microphone (frequency response of: 100Hz –
16,000Hz). The test files used as information files were text files.
This goal was attained both in an incoherent scheme and in a coherent scheme.
Build under Matlab code, our modem uses OFDM (orthogonal frequency division
multiplexing) modulation, synchronization by LMS sequence, channel estimation (no
equalizer) via pilot tones. The symbols are either PSK or ASK for a constellation size of
2 or 4. To optimize the probability of error, these symbols were mapped using Gray
mapping.
Report-This project aim was to build wireless software modem for data communicationbetween two computers using an acoustic interface in the voice frequency range (20Hz-20000Hz). The transmitting antenna is a speaker (frequency response of: 90Hz-20000Hz) and the receiving antenna is a microphone (frequency response of: 100Hz-16000Hz). The test files used as information files were text files.This goal was attained both in an incoherent scheme and in a coherent scheme.Build under Matlab code, our modem uses OFDM ( orthogonal frequency divisionmultiplexing) modulation, synchronization by LMS sequence, channel estimation (noequalizer) via pilot tones. The symbols are either PSK or ASK for a constellation size of2 or 4. To optimize the probability of error, these symbols were mapped using Graymapping.Report
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Author: |
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Description: 2fsk调制和解调，包括相干和非相干的两种方式-2FSK modulation and demodulation, including coherent and incoherent two ways
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Size: 1024 |
Author: 大大 |
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Description: This a superheterodyne reciever simulation, created in MATLAB - Simulink. The purpose is to study the effect of perturbations on the imaginary frequence and on the intermmediate frequence, in the context of incoherent demodulation.-This is a superheterodyne reciever simulation, created in MATLAB- Simulink. The purpose is to study the effect of perturbations on the imaginary frequence and on the intermmediate frequence, in the context of incoherent demodulation.
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Author: octavian |
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Description: 西安电子科技大学的一篇硕士论文：
高纬极区电离层非相干散射功率谱的模拟-Paper：A Computation of Incoherent Scatter Spectra in the High-latitude Auroral Ionosphere
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Author: shilei |
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Description: ask的相干和非相干接收，包括调制及解调过程，还有他们的误码性能比较-ask the coherent and incoherent receivers, including the modulation and demodulation process, and their BER performance comparison
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Size: 14336 |
Author: 王林 |
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Description: 本书系统地介绍信息光学基础理论及相关的应用。全书共11 章, 内容涉及二维傅里叶分析、标量衍射理论、光学成像
系统的频率特性、部分相干理论、光学全息照相、空间滤波、相干光学处理、非相干光学处理、全息干涉度量学、散斑计量学、
云纹法与云纹干涉法等。
本书内容丰富, 选材新颖, 既系统介绍基础理论, 又同时兼顾理论和技术的当前发展, 并强调理论与应用的结合。书中
精选了100 余个例题和习题, 并给出了大部分的详细解答, 便于读者加深对正文的理解。
本书读者对象为光学、光电子技术、光信息科学与技术、应用物理、精密仪器、光学工程等专业的高年级本科生和研究
生, 也可供相关专业的工程技术人员和高校师生参考-This book introduces the basic theory of information optics and related applications. The book is 11 chapters, covering the two-dimensional Fourier analysis, standard
Diffraction theory, optical imaging
The frequency characteristics of the system, part of the coherence theory, optical holography, spatial filtering, coherent optical processing, incoherent optical Department
Li, holographic interferometry, speckle metrology,
Moiré method and moire interferometry method.
This book is rich in content, selection novel, introduces basic theory of both systems, but also taking into account current developments in theory and technology, and stressed
The combination of theory and application. Book
Selection of more than 100 examples and exercises, and gives the most detailed answers, easy to readers to deepen their understanding of the body.
Book readers for the optics, photonics, optical information science and technology, applied physics, precision instruments, optical enginee
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Author: zhanghao |
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Description: 将信号进行ASK调制 并进行相干和非相干解调 比较误码率-ASK modulation of the signal and the comparison of coherent and incoherent demodulation BER
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Size: 1024 |
Author: zhanglu |
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Description: 2FSK调制解调 采用相干和非相干两种解调方式以及误码率图- 2FSK modem
Use of coherent and incoherent two Demodulation and bit error rate diagram
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Author: 舒亮 |
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Description: matlab中fsk调制与解解调解调方式有相干与非相干解调哟
-matlab fsk modulation and the solution demodulation Demodulation coherent and incoherent demodulation yo
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Author: 消极 |
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Description: 相干积累、非相干积累和二者的比较，得出相干积累效果优于非相干积累-Coherent accumulation the incoherent accumulation and comparison of the two obtained coherent accumulation effect superior to non-coherent accumulation
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Author: 马帅 |
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Description: HWM是一个水平上热层中性风的经验模型。它是基于AE-E和DE 2卫星数据获得的。矢量球谐是用来描述一组有限的经向和纬向风分量。第一个版本发布于1987年（HWM87）的模型被用于超过220公里的大风。风的数据列入非相干散射雷达和陆基法布里 - 珀罗光学干涉仪，HWM90向下延伸到100公里，并使用MF/流星数据HWM93延伸到地面。HWM90受太阳活动周期的变化较小，而且并不总是很清楚地划定是当前的数据。该模型描述了从上热层为主的昼夜变化半日变化，低热和过渡从夏季到冬季，冬季到夏季流量低于流量140公里以上的过渡。在一些地方海拔在风中向上延伸至300公里。该模型软件提供指定的纬度，经度，时间，和Ap指数的经向和纬向风。-Brief Description:
The HWM is an empirical model of the horizontal neutral wind in the upper thermosphere. It is based on wind data obtained from the AE-E and DE 2 satellites. A limited set of vector spherical harmonics is used to describe the zonal and meridional wind components. The first edition of the model released in 1987 (HWM87) was intended for winds above 220 km. With the inclusion of wind data from ground-based incoherent scatter radar and Fabry-Perot optical interferometers, HWM90 was extended down to 100 km and using MF/Meteor data HWM93 was extended down to the ground. Solar cycle variations are included (since HWM90), but they are found to be small and not always very clearly delineated be the current data. Variations with magnetic activity (Ap) are included. Mid- and low-latitude data are reproduced quite well by the model. The polar vortices are present, but not to full detail. The model describes the transition from predominately diurnal variations in the upper therm
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Author: Liu Jin |
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Description: Learning Incoherent Dictionaries for Sparse Approximation
using Iterative Projections and Rotations
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Author: dff |
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Description: 非相干超宽带系统中的自适应同步研究，供大家参考-Incoherent ultra-wideband systems adaptive synchronization research for your reference
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Author: 豆豆 |
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Description: 解决ISM语音定位中非相干信号加噪的定向问题。对线性调频信号进行了DFT。-Solve ISM voice positioning signal plus noise Incoherent orientation issues. Linear FM signal was DFT.
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Size: 4096 |
Author: 薛乃涛 |
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Description: music算法相干和非相干2个信号源求根。有增益信噪比，自编求根music算法-music algorithm coherent and incoherent two sources Roots. There SNR gain, self-roots music algorithm
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Author: 薛乃涛 |
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Description: This paper aims to present a new method for generating incoherent seismic ground
motions on the basis of the stochastic deconvolution technique and the spectral representation
method. The generated free field motion satisfies the imposed statistical properties on the free
surface and is composed of elementary plane waves of types SH, P-SV incoming from all directions. This will allow 3D soil-structure interaction analyses to be performed with spatially
varying seismic motions in the case of structure with embedded foundation. Eventually, structural non-linearity can be accounted for when the SSI analysis is performed in the time domain.
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Author: Aleja28 |
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Description: 相干与非相干成像系统的比较。复习光学传递函数OTF的概念，以及该函数与相干传递函数CTF的关系。用OTF完成单透镜系统成像的计算。-The comparison of coherent and incoherent imaging system.Review the concept of OTF, optical transfer function and the function relations with CTF coherent transfer function.Complete the single lens imaging system with OTF calculation.
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Author: huyidu |
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