Question
Download Solution PDFNumber of bits in a binary PCM system is increased from n to n + 2. What is the improvement in SNR?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe SNR in a binary PCM system can be expressed as:
SNR = (6 × n) dB
where n is the number of bits used for quantization. This indicates that the SNR increases linearly with the number of bits used in the PCM system.
Effect of Increasing Number of Bits:
When the number of bits in the PCM system is increased from n to n + 2, the SNR also increases. The improvement in SNR can be calculated using the difference in SNR values before and after increasing the number of bits:
Improvement in SNR = SNR (n + 2) - SNR (n)
Substituting the values:
Improvement in SNR = (6 × (n + 2)) - (6 × n)
Improvement in SNR = 6 × n + 12 - 6 × n
Improvement in SNR = 12 dB
Hence the correct answer is 12 dB
Last updated on May 30, 2025
-> The ISRO Technical Assistant recruitment 2025 notification has been released at the official website.
-> Candidates can apply for ISRO recruitment 2025 for Technical Assistant from June 4 to 18.
-> A total of 83 vacancies have been announced for the post of Technical Assistant.
-> The Selection process consists of a written test and a Skill test.
-> Candidates can also practice through ISRO Technical Assistant Electrical Test Series, ISRO Technical Assistant Electronics Test Series, and ISRO Technical Assistant Mechanical Test Series to improve their preparation and increase the chance of selection.