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QPSK is used in CDMA because it helps achieve higher data rates. It is much better than simple PSK.
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What is QPSK?
QPSK = Quadrature Phase Shift Keying In QPSK amplitude are not much.so the carrier is constant. transmission rate is higher when compared with PSK
What is the bit rate of a QPSK compared to BPSK?
bit error is same for QPSK and BPSK. :
What is the advantage of qpsk over psk?
QPSK require less bandwidth compare to psk
What is the difference between oqpsk and qpsk?
the phase shift allowed in OQPSK is 900 whereas in QPSK it is 1800 . QPSK is used in uplink whereas OQPSK is used in downlink.
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.
What is the difference between QPSK and DPSK?
Qpsk has lesser bw than dpsk but has more probability in error than dpsk.
What are the modulation tecniques in mobile communication?
qpsk modulation
What is the modulation technique used in pdh as nec equipment?
QPSK
What is the difference between PSK and QPSK?
in psk,we use only single type of phase shift for a bit transition. in qpsk,we use 4 types of phase shifts for a bit transition.
Which is the best modulation technique in terms of message carrying efficiency?
qpsk
What are the disadvantage of qpsk?
Disadvantages of QPSK are large interchannel interferences, required filtering, consonant synchronization, and more bandwidth usage for transmitting power. Its disadvantages are just matters of consumption and constant fine-tuning.
What are disadvantages of quadrature phase shift keying?
Generation and detection of QPSK is complex.
