In a digital communication system known as QPSK, one of four symbols {A, B, C, D} is transmitted at a time. The channel characteristics are indicated in the figure below.The prior probabilities of the input symbols are given to be: Pr[AS] = 3/16, Pr[BS] = 1/4, Pr[CS] = 5/16, Pr[DS] = 1/4. (a) What is the probability of receiving an A? (b) Determine the probability of error in this channel. (c) Given that D is received, find the probability that (i) A was sent, (ii) B was sent, (iii) C was sent, and (iv) D was sent.
In a digital communication system known as QPSK, one of four symbols {A, B, C, D} is transmitted at a time. The channel characteristics are indicated in the figure below.The prior probabilities of the input symbols are given to be: Pr[AS] = 3/16, Pr[BS] = 1/4, Pr[CS] = 5/16, Pr[DS] = 1/4. (a) What is the probability of receiving an A? (b) Determine the probability of error in this channel. (c) Given that D is received, find the probability that (i) A was sent, (ii) B was sent, (iii) C was sent, and (iv) D was sent.
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In a digital communication system known as QPSK, one of four symbols {A, B, C, D} is transmitted at a time. The channel characteristics are indicated in the figure below.The prior probabilities of the input symbols are given to be: Pr[AS] = 3/16, Pr[BS] = 1/4, Pr[CS] = 5/16, Pr[DS] = 1/4.
(a) What is the probability of receiving an A?
(b) Determine the probability of error in this channel.
(c) Given that D is received, find the probability that (i) A was sent, (ii) B was sent, (iii) C was sent, and (iv) D was sent.

Transcribed Image Text:0.97
AR
00 As
BR
0.95
0.97
CR
II Cs
DR
10 D,
0.95
![Q1.3 In a digital communication system known as QPSK, one of four symbols {A, B, C, D} is transmitted at a time.
The channel characteristics are indicated in the figure below.The prior probabilities of
the input symbols are given to be: Pr[AS] = 3/16, Pr[BS]= 1/4, Pr[CS] = 5/16, Pr[DS]
= 1/4.
0.97
00 A,
AR
01 B,
0.95
(a) What is the probability of receiving an A?
(b) Determine the probability of error in this channel.
(c) Given that D is received, find the probability that (i) A was sent, (ii) B was sent,
(iii) C was sent, and (iv) D was sent.
0.97
10 D.
DR
0.95](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F5d608738-de97-44c0-bbb8-be538cc84596%2Fb8cdd49a-274c-40c0-adac-2f946e8668c7%2Fa8bjwvn_processed.png&w=3840&q=75)
Transcribed Image Text:Q1.3 In a digital communication system known as QPSK, one of four symbols {A, B, C, D} is transmitted at a time.
The channel characteristics are indicated in the figure below.The prior probabilities of
the input symbols are given to be: Pr[AS] = 3/16, Pr[BS]= 1/4, Pr[CS] = 5/16, Pr[DS]
= 1/4.
0.97
00 A,
AR
01 B,
0.95
(a) What is the probability of receiving an A?
(b) Determine the probability of error in this channel.
(c) Given that D is received, find the probability that (i) A was sent, (ii) B was sent,
(iii) C was sent, and (iv) D was sent.
0.97
10 D.
DR
0.95
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