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QPSK

   Also found in: Encyclopedia 0.01 sec.
AcronymDefinition
QPSKQuadrature Phase-Shift Keying
QPSKQuaternary Phase Shift Keying (transmission encoding)
QPSKQuadriphase Shift Key
QPSKQuadrative Phase-Shift Keying
QPSKQuadrs Phase Shift Key


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In Figure 2(a), there are four emerging branches from each trellis state, because there are four possible QPSK symbols, namely {0,1,2,3}.
83 Annex B-compliant QAM demodulator, a high quality NTSC demodulator, and a BTSC decoder, as well as an OOB (Out of Band) QPSK demodulator and OOB Local Oscillator for seamless integration into DCR (Digital Cable Ready) television sets.
Now users can take advantage of the SM2000's maximum flexibility in meeting power or bandwidth constraints thanks to its full range of FEC choices for BPSK and QPSK modulation.
 
 
 
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