摘要DESIGNOF MQAM MODULATOR/DEMODULATOR SYSTEM ABSTRACT Softwareradioisan open architecturewhichcentral conception isto standardizedhardware platform andrealizevariouswirelesscommunication functionsvia loading software.ModulatorandDemodulatorbasedonSoft Radioarefocusesintelecommunicationareas recently.Modulation and demodulat...
Figure 4-5 A M signal containing not only the carrier and sidebands but also the modulating signal.Figure 4-6 T he tuned circuit fi lters out the modulating signal and carrier harmonics,l eaving only the carrier and sidebands.V V c Amplitude Modulator and Demodulator Circuits 121 ...
Key words :matlab;modulator and demodulator;am;signal-to-noise-ratio 第 1.1 调制就是使一个信号(如光、高频电磁振荡等)的某些参数(如振幅、频率等)按照另一个欲传输的信号(如声音、图像等)的特点变化的过程。解调是调制的逆过程,它的作用是从已调波信号中取出原来的调制信号。对于幅度调制来说,解调是从它...
AM modulator/demodulatorconfigurable analog building blocksfield programmable analog arraysIn this paper, the design of a power-law function generator and AM modulator/demodulator using configurable analog blocks (CABs) for filed programmable analog arrays (FPAAs) is presented. To maintain high frequency...
4、modulation method in different SNR, making comparison of demodulation effect.Key words :matlab; modulator and demodulator;am;signal-to-noise-ratio 目录第1章 绪论11.1 研究意义11.2 研究现状11.3 研究内容2第2章 AM调制解调的原理32.1 AM的调制原理32.2 AM的解调原理42.2.1 AM波的相干解调52.2.2 AM波...
7、son capability and prese nts adesig n of MQAM modulator / demodulator based on software defi ned radiowith FPGA. The characteristics and overview ofMQAM are firstly introduced, thenmathematical structures of the modulator / demodulations and carri recovery,design of software , realization of the...
This paper studies the main content is to understand the mathematical model of AM signal, the modulation method and the demodulation method of it, Different demodulation method in different SNR, making comparison of demodulation effect. Key words :matlab; modulator and demodulator;am;signal-to-noise...
program based on FPGA andanalysis of test results.This paper elaborate a new algorithm of 1 6QAMcarrier recovery and thedesign of experiment hardware with visualizaton.System bases on a common hardware platform and modular software design toachieve the experiment system ofMQAM modulator/demodulator. ...
In this paper a novel ultra-low power CMOS integrated amplitude shift-keying (ASK) demodulator is presented which is dedicated for implantable electronic d... Y Hàshemí 被引量: 0发表: 2012年 Design of a digital modulator and demodulator for reader-less RFID Tag in 0.18 m CMOS process - ...
Key words : Key words : Key words : Key words :matlab matlab matlab;; ; modulator and demodulator modulator and demodulator modulator and demodulator;; ;am am am;; ;signal-to-noise-ratio signal-to-noise-ratio signal-to-noise-ratio