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In a digital continuous-time communication system, the bit rate of NRZ data stream is 1 Mbps and carrier frequency of transmission is 100 MHz. What is the bandwidth requirement of the channel in BPSK and QPSK systems respectively?
  • a)
    2 MHz and 4 MHz
  • b)
    1 MHz and 2 MHz
  • c)
    4 MHz and 2 MHz
  • d)
    2 MHz and 1 MHz
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
In a digital continuous-time communication system, the bit rate of NRZ...
The bit period of NRZ data stream is
In BPSK, each binary bit is a symbol, therefore symbol duration Ts = Tb = 1 μs.
∴ The bandwidth required for BPSK system is
In QPSK, we group two successive bits to form one symbol, therefore symbol duration,
Most Upvoted Answer
In a digital continuous-time communication system, the bit rate of NRZ...
Given information:
Bit rate of NRZ data stream = 1 Mbps
Carrier frequency of transmission = 100 MHz

Bandwidth requirement in BPSK system:
In BPSK system, the bandwidth requirement can be calculated using the formula:

Bandwidth = 2 × (1 + β) × Bit rate

Where β is the excess bandwidth factor and for BPSK modulation, β = 1.

Substituting the given values, we get:

Bandwidth = 2 × (1 + 1) × 1 Mbps = 4 MHz

Therefore, the bandwidth requirement in BPSK system is 4 MHz.

Bandwidth requirement in QPSK system:
In QPSK system, the bandwidth requirement can be calculated using the formula:

Bandwidth = 2 × (1 + β) × Bit rate

Where β is the excess bandwidth factor and for QPSK modulation, β = 0.5.

Substituting the given values, we get:

Bandwidth = 2 × (1 + 0.5) × 1 Mbps = 2 MHz

Therefore, the bandwidth requirement in QPSK system is 2 MHz.

Hence, the correct answer is option D - 2 MHz and 1 MHz.
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In a digital continuous-time communication system, the bit rate of NRZ data stream is 1 Mbps and carrier frequency of transmission is 100 MHz. What is the bandwidth requirement of the channel in BPSK and QPSK systems respectively?a)2 MHz and 4 MHzb)1 MHz and 2 MHzc)4 MHz and 2 MHzd)2 MHz and 1 MHzCorrect answer is option 'D'. Can you explain this answer?
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In a digital continuous-time communication system, the bit rate of NRZ data stream is 1 Mbps and carrier frequency of transmission is 100 MHz. What is the bandwidth requirement of the channel in BPSK and QPSK systems respectively?a)2 MHz and 4 MHzb)1 MHz and 2 MHzc)4 MHz and 2 MHzd)2 MHz and 1 MHzCorrect answer is option 'D'. Can you explain this answer? for Electronics and Communication Engineering (ECE) 2024 is part of Electronics and Communication Engineering (ECE) preparation. The Question and answers have been prepared according to the Electronics and Communication Engineering (ECE) exam syllabus. Information about In a digital continuous-time communication system, the bit rate of NRZ data stream is 1 Mbps and carrier frequency of transmission is 100 MHz. What is the bandwidth requirement of the channel in BPSK and QPSK systems respectively?a)2 MHz and 4 MHzb)1 MHz and 2 MHzc)4 MHz and 2 MHzd)2 MHz and 1 MHzCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Electronics and Communication Engineering (ECE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In a digital continuous-time communication system, the bit rate of NRZ data stream is 1 Mbps and carrier frequency of transmission is 100 MHz. What is the bandwidth requirement of the channel in BPSK and QPSK systems respectively?a)2 MHz and 4 MHzb)1 MHz and 2 MHzc)4 MHz and 2 MHzd)2 MHz and 1 MHzCorrect answer is option 'D'. Can you explain this answer?.
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