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Lewis Kelsey's user avatar
Lewis Kelsey's user avatar
Lewis Kelsey's user avatar
Lewis Kelsey
  • Member for 5 years, 7 months
  • Last seen more than a month ago
  • United Kingdom
2 votes
3 answers
2k views

If a square wave is a sum of odd harmonic impulses, why is it continuous in the frequency domain?

2 votes
4 answers
1k views

Are capacity and spectral efficiency identical for a dicrete-time digital signal?

1 vote
1 answer
3k views

How is signal to noise ratio actually measured by receiver equipment?

1 vote
1 answer
215 views

Why do I keep seeing this equation for $E_b/N_0$

1 vote
2 answers
96 views

Isn't the rect pulse filter implicit at the transmitter?

1 vote
1 answer
799 views

Visualising OFDM subcarriers in the frequency domain

1 vote
0 answers
143 views

Why does carrier frequency offset (CFO) cause carrier phase error (CPE)?

1 vote
2 answers
615 views

How does companding compress dynamic range?

1 vote
3 answers
640 views

How are the reflections in a quarter wavelength transformer dealt with in signal processing?

0 votes
0 answers
34 views

IDFT of voltage frequency response of input resistance of antenna / transmission line is non causal?

0 votes
0 answers
38 views

At what bandwidth does BPSK become totally unreliable? [duplicate]

0 votes
1 answer
92 views

Why do we need to 'estimate' the PSD

0 votes
0 answers
323 views

Why are some Shannon's limit plots exponential rather than logarithmic?

0 votes
2 answers
436 views

Ambiguity in the IFFT process in OFDM

0 votes
0 answers
123 views

Why is the noise on an eye diagram not in the centre i.e. at 0?

0 votes
2 answers
92 views

What specifically does PCM refer to?

0 votes
1 answer
424 views

Why does fine CFO cause rotation of the constellation?

0 votes
1 answer
44 views

Mathematical relationship between phase modulated (PM) signal and the complex phase/magnitude of the frequency component at the carrier frequency?