QPSK is a composite of(a) Two BPSK(b) Three BPSK(c) Two FSK(d) Two M-ary PSKThis question was posed to me in a national level competition.This is a very interesting question from Bandwidth Efficiency Plane and Bandwidth Efficient Modulation topic in division Modulation and Coding Trade-off of Digital Communications

QPSK is a composite of(a) Two BPSK(b) Three BPSK(c) Two FSK(d) Two M-a

1.	QPSK is a composite of(a) Two BPSK(b) Three BPSK(c) Two FSK(d) Two M-ary PSKThis question was posed to me in a national level competition.This is a very interesting question from Bandwidth Efficiency Plane and Bandwidth Efficient Modulation topic in division Modulation and Coding Trade-off of Digital Communications
Answer» The correct CHOICE is (a) Two BPSK The best explanation: QPSK is effectively a COMPOSITE of two BPSK SIGNALS transmitted on orthogonal components of the carrier.

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