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in qpsk we are using phases for representation of messages while in qam we hav amplitude levels.
in qpsk 2 bits per symbol is used with four different phases.
in qam depanding on type i.e 16 qam,64 qam,256 qam how many amplitude levels to be used accordingly i.e 16,64,256.
sonender kumar
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∙ 12y ago
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∙ 9y agoajsdfm m masfm
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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 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 and DPSK?
Qpsk has lesser bw than dpsk but has more probability in error than dpsk.
What is difference between 16QAM and 64 QAM?
mary with 4 and 8
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.
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 modulation technique used in microwave pdh as nec equipment?
QAM... (16 QAM, 256 QAM) according to capacity
Why Qpsk?
QPSK is used in CDMA because it helps achieve higher data rates. It is much better than simple PSK.
What is take in the am abbreviated?
qam
How many frequencies does a full-duplex QAM-128 modem use?
You are asking this question because you are trying to cheat on your homework!
