BPSK-This page describesBPSKmodulation technique with equation and constellation diagram. QPSK-This page describesQPSKmodulation technique with equation and constellation diagram. QAM-This page describesQAMmodulation technique with equation and constellation diagram. ...
In signal processing: Quadrature amplitude modulation (QAM), a modulation method of using both an (in-phase) carrier wave and a 'quadrature' carrier wave that is 90° out of phase with the main, or in-phase, carrier Quadrature phase, oscillations that are said to be in quadrature if they...
There are three major classes of digital modulation techniques used for transmission of digitally represented data: Amplitude-shift keying (ASK)Frequency-shift keying (FSK)Phase-shift keying (PSK)key应该是这个意思：roughen a surface so that plaster or paint will stick to it, 把表⾯弄粗糙以便附着...
Such a structure can be used to demodulate several frequency modulation schemes such as FM, FSK and GMSK. The input to the block is the complex baseband waveform. Within the block, a product of the one-sample delayed input and the conjugate original signal is computed, the output of which ...
In FSK modulation, NRZ signalling method is used. Bandwidth requirement in case of FSK is: BW = 2*Rb + (f1-f2) • In case of FSK, Pe is less and SNR is high. • This technique is widely employed in modem design and development. ...