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产生15种模拟及数字调制信号函数。参数说明：type－调制信号种类,total_time－信号总时间长度,fc－载频,fs－抽样频率,symbol_rate－符号率-have 15 analog and digital modulation signal function. Parameter Descr iption : type-modulated signal types,'04-Signal total time length, fc-carrier frequency, fs-
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GSM 调制的协议规定，主要是GMSK 高斯滤波最小移频键控调制 里面具体说明了调制方法和参数-GSM modulation of the agreement, is the smallest GMSK Gaussian filter frequency-shift keying modulation inside specify the modulation method and parameters
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MATLAB程序的仿真比较。随后，针对QPsK，详细讨论了其基本原理和具体的实现算法，并进行了仿真验证，然后选用HSP502巧数字上变频芯片和HSP50214B数字下变频芯片，设计了数字调制、解调器的实现方案。最后，作为对整个数字视频图像传输系统的宏观认识，利用M户JLAB中的实时建模仿真Simullnk库对典型的视频图像传输系统一数字视频广播系统(D vB)，进行了建模、仿真和初步的分析，结果表明:在高斯白噪声的传输环境下，系统采取的一系列抗干扰措施，包括内、外码级联的信道纠错编码和先进的调制
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包括信号的调制与解调，经MATLAB仿真，其性能良好。-Including the signal modulation and demodulation, by the MATLAB simulation, its performance is good.
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频率调制，属于角度调制中主要一种，相位调制可以通过对信号先微分再调频获得-Frequency modulation, angle modulation in the main belong to a kind of phase modulation of the signal can be differential access to re-FM
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DIGITAL MODULATION TECHNIQUES
the material describes digital modulation techniques such as BINARY PHASE SHIFT KEYING (BPSK), DIFFERENTIAL PSK (DPSK), DIFFERENTIALLY-ENCODED PSK (DEPSK), QUADRATURE PSK (QPSK), QUADRATURE AMPLITUDE SHIFT KEYING (Q-AS
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振幅调制,角度调制，频率调制等几个源程序，模拟通信系统-Amplitude modulation, angle modulation, frequency modulation, such as source code, analog communication systems
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This the book "Signals and Systems - made ridiculously simple" by J. Karu in djvu file format. It gives an excellent introduction to system theory and covers all related concepts: Continuous-Time Systems, Frequency Domain, Laplace Transform, Continuo
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PERFORMANCE ANALYSIS OF OFDM
Orthogonal Frequency-Division Multiplexing (OFDM) — essentially identical to Coded OFDM
(COFDM) — is a digital multi-carrier modulation scheme, which uses a large number of closely-spaced
orthogonal sub-carriers. Ea
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Bluetooth modulation and frequency hopping
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在matlab环境下的简单调频过程的实现-frequency modulation
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利用MAXPLUS作为仿真工具，用VHDL语言编程，采用频率键控法实现3FSK调制。对输入的系统时钟分别进行2分频，4分频和8分频得到这3种频率。通过对数字基带信号进行双二进制编码得到3个电平值，把它们作为三选一开关，来分别选择不同的频率值、选择不同的信号，从而实现3FSK调制。-As a simulation tool used MAXPLUS using VHDL language programming, using frequency shift keying modulation me
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1.linking of header data into .cpp in vc++
2.error correcting encoder and decoder
3.viterbi decoder in c
4.frequency modulation and demodulation in matlab
5.Performance Analysis of Weighted Median Filters in Prediction of Images
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二进制差分编码解码，二进制差分相移键控二进制幅移键控，二进制相移键控，二进制频移键控最小频移键控的调制与解调-Differential encoding and decoding binary, binary differential phase shift keying binary amplitude shift keying, BPSK, binary frequency shift keying Minimum Shift Keying modulation and demodulati
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本文以& ∋ ( 型微机远动系统 一!∀ # ∃ ! 为例 ,
讨论了微机远动中远 程数据的通讯
问题 。
重点介绍一种新颖实用的频率调制方法一用晶振 分频实现远动)
信号频率调制-In this paper, & ∋ (microcomputer-based remote control system a! ∀ # ∃ !, For example, discusses the remote c
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OFDM(正交频率调制)实现多载波调制基本思想是将带宽信道分解成许多并行的窄子信道，是每个子信道的想干带宽，从而实现平稳衰落。搭建了完整的OFDM信道链路系统，运用三种不同的信道估计方法(LS信道估计、DFT信道估计、Improved-DFT信道估计)，并对AWGN理想信道和衰落信道误码情况进行了仿真和比较。-OFDM (Orthogonal Frequency Modulation) multicarrier modulation basic idea bandwidth channel is
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matlab仿真。
对m序列和互补码序列的仿真：分别对m序列和四相互补码序列的发射，回波，和脉冲压缩进行了仿真。
同时包含线性调频信号（LFM）和m序列以及简单单脉冲的模糊函数仿真的文件。-The matlab simulation.
m sequence and complementary code sequence simulation: four-phanse complementary code and m sequence code s emission, echo, a
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雷达测伪距 采用的正负调频法 matlab仿真源码 -The radar measured pseudorange positive and negative frequency modulation method matlab simulation source code
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these programs are related to modulation techniques like amplitude modulation, frequency modulation and DSBSC,SSBSC, sampling theorem
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A key consequence of the usual double-sideband amplitude modulation (AM) is that the range of frequencies the signal spans (its spectral bandwidth) is doubled. Thus, the RF bandwidth of a signal (measured from the lowest frequency as opposed to 0 Hz)
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