1BER and SER for QPSKIn the lecture notes, it has been shown that zAand zBare given byFollowing a similar procedure as that for BPSK, we can show thatAs each QPSK symbol carries two bits, we have (See textbook page 283.)0.50.5ABzAnoisezBτ=+( )cos(2)sin(2)ccxtAftBf tπ=+cos(2πfct)⊗decisiondevice⊗
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symbol error rate, QPSK, two bits, 2 EB, zA output bits