Topic: QPSK
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Answers to Common Questions
What is QPSK?
QPSK = Quadrature Phase Shift KeyingIn QPSK amplitude are not much.so the carrier is constant.transmission rate is higher when compared with PSK Read More »
Source: http://wiki.answers.com/Q/Scpc_pcm_multiple_access_demand_assigne...
What is the difference between QPSK?
See the question "What is QPSK". If you want the difference between QPSK and some other modulation system, you'll need to name the other one. Read More »
Source: http://wiki.answers.com/Q/What_is_the_difference_between_QPSK
What does QPSK stand for?
Quaternary Phase Shift Keying (transmission encoding) Read More »
Source: http://acronyms.thefreedictionary.com/Quadrs+Phase+Shift+Key
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QPSK
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Answers to Other Common Questions
Because QPSK signaling is bandwidth efficient and can be achieved with sharp cutoff filters shaped to reduce inter-symbol interference.
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Source: http://www.answerbag.com/q_view/579659
Quadrature Phase Shift Keying-Orthogonal Frequency-Division Multiplexing
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Source: http://acronyms.thefreedictionary.com/QPSK-OFDM
16-QAM has a higher data rate (given the same bandwidth), but has a higher error-rate with the same interference/noise levels. uhh, by default, I guess this would make QPSK "more robust" High noise-levels, switch to QPSK .... when the noise...
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Source: http://answers.yahoo.com/question/index?qid=20070301151655AADF0H6
Answer for 4KHz then for noisy channel using Shannon theorem, sampling rate will be 8K samples/sec. So with 2 bit encoding, 2 bits are sent per sample. So the data rates is 8000 samples / sec * 2 bits = 16000bits / sec = 16kbps.
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Source: http://wiki.answers.com/Q/How_you_can_Find_the_maximum_data_rate_...
When satellite transponders are used to transmit MPEG-2 signals, Quadrature Phase Shift Keying is used to modulate the digital information onto an RF carrier. Rather than using the amplitude or frequency of the carrier to convey the informa...
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Source: http://my.opera.com/riza.rakhman/blog/
If you look at the possible locations on a phasor diagram, your I signal will give you either 0 degrees or 180 degrees. The Q signal will be either 90 degrees or 270 degrees. When you ADD all possible points with vector addition, you get 45...
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Source: http://forum.allaboutcircuits.com/showthread.php?t=15725
