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Pulse shaping filter transmitter and reciever with interpolation and decimation

should I have to that filter with decimation or interpolation ? Probably: neither! Decimation: if you decimate by 2, you get 1 sample per symbol. Which is perfect, and exactly what you want! Small ...
Marcus Müller's user avatar
0 votes

CPM Modulation and Demodulation, How to determine the values for normalized bandwidth?

Here’s a step-by-step procedure to find Bnorm: Determine the highest frequency fmax​ in the signal. Set the initial sampling frequency fs​≥2fmax​. You can start with fs=2.5fmax​ or fs=3fmax to ...
Naveed Ahmed's user avatar
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Measurement to compare the width of the autocorrelation peak

The width of the autocorrelation peak is an indication of independence from sample to sample, and specifically how much "memory" is in each sample compared to prior samples. "White ...
Dan Boschen's user avatar
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1 vote

TCP vs UDP for signal consumption

"If it's late it's useless, no matter how complete." - use UDP. "If it's not complete it's useless, no matter how prompt." - Use TCP.
TimWescott's user avatar
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0 votes

Measurement to compare the width of the autocorrelation peak

The autocorrelation is the inverse Fourier Transform of the Power Spectrum Density and all Fourier Transform relationships apply. Some course rules of thumb If the peak is narrow and smooth it's ...
Hilmar's user avatar
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3 votes
Accepted

TCP vs UDP for signal consumption

We have to be a bit more precise about what these SDR devices really do. What they not do is support connecting an SDR device to the controlling PC through "the internet at large": That's ...
Marcus Müller's user avatar
2 votes

High PAPR (Peak-to-Average Power Ratio)

It's very important to include the Complementary Cumulative Distribution Function (CCDF) when considering the peak-avg ratio for any waveform, otherwise any reported metric may not accurately reflect ...
Dan Boschen's user avatar
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2 votes

High PAPR (Peak-to-Average Power Ratio)

No, it's not. PAPRs of 400 (=26 dB) can happen to an OFDM system with significantly more than $\sqrt{400}=20$ carriers quite probably. Of course you'll build your coding such that these OFDM symbols ...
Marcus Müller's user avatar
2 votes
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Simulation of Doppler shift in C/A code

Important update: my previous answer suggested the Doppler affect on the chip clock is insignificant; I made an math error and although likely not visible to the OP over simulations of short time ...
Dan Boschen's user avatar
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0 votes

decode a message from an echo

It seems you mentally skip an important part: You assume you get the echo – and the echo alone. How is that going to happen? It's on the same frequency as your transmission, and absolutely linearly ...
Marcus Müller's user avatar

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