（4）QPSK解调模块 QPSK_Demodulator 模块：将 接受到的I 和 Q 信号重新转换为两位数据。部分代码：mod...
Optoplex's passive free-space micro-optics-based90º optical hybridis suitable forcoherent signal demodulationfor either homodyne or heterodyne detection. The patent-pending, broadband device accepts the two optical signals (S & L) and generates four output signals: S+L, S-L, S+jL, S-jL, ...
A Typical Quadrature Modulator and Demodulator Block Diagram An example of a digital radio transmitter and receiver system with its component layout and frequency plan is shown in Figure 1. The frequency extremes of this system are a 270.833 kHz data rate, and a 1018.5 MHz local oscillator...
A SPICE simulation verifies the above theory.Figure 1 shows a block diagram of a simple demodulator circuit. The input voltage, QPSK IN, is a 1MHz sine wave whose phase is shifted by 45°, 135°, 225°, and then 315° every 5µs. ...
QPSK调制器 Maxim > App Notes > Basestations/wireless infrastructure Wireless and RF Keywords: tutorial, QPSK, modulation, modulator, demodulator, demodulation May 01, 2002 APPLICATION NOTE 686 QPSK modulation demystified Abstract: Readers are presented with step-by-step derivations showing the operation ...
单纯做一个QPSK并不难。但是实际中经常出现的问题是，无线电通信的时候收发器是运动的，由于多普勒效应，...
DP-QPSK Demodulator, Optoplex HB-C0GLCC018, 2×8 Coherent Mixer To be used for optical coherent detection such as DP-QPSK receivers, Optoplex’s ten-port 2×8 Coherent Mixer (aka QPSK mixer) combines the incoming signal with a local oscillator to generate eight light states in the complex-...
See Also Blocks QPSK Demodulator Baseband | M-PSK Modulator Baseband | BPSK Modulator Baseband | DQPSK Modulator Baseband Objects comm.QPSKModulator Topics Digital Baseband ModulationWhy did you choose this rating? Submit How useful was this information? Unrated 1 star 2 stars 3 stars 4 stars 5...
QPSK Demodulator TheQPSK Demodulatorsubsystem uses theQPSK Demodulator Basebandblock to demodulate the packet synchronized symbols and generate bits. HDL Data Descrambler TheHDL Data Descramblersubsystem descrambles the demodulated bits to generate the user bits. This subsystem is same as the scrambler use...
FIG. 1 is a block diagram showing a conventional demodulator. A QPSK modulated signal input to an input terminal 1 is parallelly supplied to both an in-phase detector 2 and a quadrature-phase detector 3. Local oscillation signals given to the detectors 2 and 3 are local oscillation signals g...