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my digital communications cheat sheet

Nasser M. Abbasi

January 5, 2019   Compiled on December 21, 2025 at 1:51pm
1 What is the relation between bandpass, baseband ,complex envelop and pre envelop?
2 Some useful Fourier Transforms
3 Random process definitions
4 How to determine Hilbert transform of a signal?
5 How to find Power Spectrum (PSD) of a random signal \(x\left ( t\right ) \)
6 What is the relation between variance and power for a random signal \(x\left ( t\right ) \)?
7 How to find the SNR for sampling quantization?
8 How to determine coding of a number from quantization?
9 How to derive the Phase and Frequency modulation signals?
10 How to obtain the phase deviation and the frequency deviation for angle modulated signal?
11 How to quickly determine SNR\(_{i}\) from \(SNR_{c}\)?
12 How to determine figure of merit for DSB-SC using coherent detector?
13 How to determine figure of merit for AM transmission using coherent detector?
14 How to determine figure of merit for AM using envelope detector?
15 How to determine figure of merit for SSB using coherent detector?
16 How to determine figure of merit for VSB using coherent detector?