a) Eye pattern is used to study? i. ISI ii. Quantization noise iii. Error rate iv. None of these. b) AMI is another name of which process? i. Polar ii. Bipolar iii. On-off iv. None... a) Eye pattern is used to study? i. ISI ii. Quantization noise iii. Error rate iv. None of these. b) AMI is another name of which process? i. Polar ii. Bipolar iii. On-off iv. None of these. c) State the properties of the autocorrelation function. d) The spectral density of white noise? i. varies with frequency ii. varies with bandwidth iii. varies with amplitude of signal iv. is constant.
Understand the Problem
The question contains multiple sub-questions related to signal processing concepts such as eye patterns, AMI (Alternate Mark Inversion), and properties of the autocorrelation function, as well as characteristics of white noise. It aims to assess knowledge in this technical field.
Answer
["i. ISI","ii. Bipolar",["Symmetry: Rxx(\u03c4) = Rxx(-\u03c4)","Maximum at zero lag: Rxx(0) is a maximum","Non-negative definite: For any real-valued function f(t), \u222b\u222b Rxx(\u03c41 - \u03c42) f(\u03c41) f*(\u03c42) d\u03c41 d\u03c42 \u2265 0","Even function: The autocorrelation function is an even function of its argument.","Wide sense stationary processes: In WSS processes, the autocorrelation function depends only on the time difference"],"iv. is constant"]
["a) Eye pattern is used to study i. ISI","b) AMI is another name of which process? ii. Bipolar","c) The properties of the autocorrelation function are:",["Symmetry: Rxx(\u03c4) = Rxx(-\u03c4)","Maximum value at zero lag: Rxx(0) is a maximum","Non-negative definite: For any real-valued function f(t), \u222b\u222b Rxx(\u03c41 - \u03c42) f(\u03c41) f*(\u03c42) d\u03c41 d\u03c42 \u2265 0","Even function: The autocorrelation function is an even function of its argument.","Wide sense stationary processes: In WSS processes, the autocorrelation function depends only on the time difference"],"d) The spectral density of white noise iv. is constant."]
Answer for screen readers
["a) Eye pattern is used to study i. ISI","b) AMI is another name of which process? ii. Bipolar","c) The properties of the autocorrelation function are:",["Symmetry: Rxx(\u03c4) = Rxx(-\u03c4)","Maximum value at zero lag: Rxx(0) is a maximum","Non-negative definite: For any real-valued function f(t), \u222b\u222b Rxx(\u03c41 - \u03c42) f(\u03c41) f*(\u03c42) d\u03c41 d\u03c42 \u2265 0","Even function: The autocorrelation function is an even function of its argument.","Wide sense stationary processes: In WSS processes, the autocorrelation function depends only on the time difference"],"d) The spectral density of white noise iv. is constant."]
More Information
Eye patterns are a crucial tool in digital communication, especially for evaluating the performance of baseband transmission systems. They visually represent the signal's integrity over multiple symbol periods. AMI (Alternate Mark Inversion) is a type of bipolar encoding used in digital communication to reduce the DC component and improve error detection.
Tips
Common mistakes include confusing the uses of eye pattern analysis and misunderstanding the concept of white noise spectral density. Ensure you are clear about the definitions and properties before answering.
Sources
- Digital Communication | Download Free PDF | Modulation - Scribd - scribd.com
- [PDF] Digital Communication systems Stream: ECE Subject Code: EC 501 ... - gnit.ac.in
- [PDF] Digital Modulation Techniques - pws.npru.ac.th
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