Questions tagged [spread-spectrum]
The spread-spectrum tag has no usage guidance.
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Is there any Spread Spectrum system that uses Rake with cyclic Prefix?
My question is that could the use of cyclic prefix can enhance the performance of Rake receiver ?
I find this proposal here CP for DSSS Rake Receiver that seems correct.
Without CP, ISI emerges and ...
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What kind of signal modulation is more resistant to jamming?
I've understood that spread-spectrum type of modulations are more resistant to narrow band jamming, for obvious reasons. What is less obvious is why someone would try to jam for example a cellular ...
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Does MSK modulation maintain continous phase after spectrum spread?
I need to check if MSK modulation keeps the phase continuous after DS spectrum spread. My thinking is that since we're expanding the bandwidth, it likely involves abrupt frequency changes so it won't ...
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How is seen the BER of a BPSK DSSS?
I am trying to understand the DSSS (spread spectrum) performance improvments.
Let's consider that we are in BPSK and on a AWGN channel without any interferences or adjacent signals.
Is the theoretical ...
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BER formula for chirp spread spectrum BPSK modulation scheme
May I know how to derive the BER formula for chirp spread spectrum BPSK modulation scheme ?
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HackRF setup for capturing GNSS signals
I have a MATLAB script which process IF signals to acquire GPS satellites.
I decided to capture IF signals containing GPS L1 C/A (1575.42 MHz) myself.
What I have:
HackRF
TCXO for HackRF
Active GPS ...
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Spread Spectrum (CDMA) signal phase noise measurement
A CDMA signal is considered for this application.
I would like to have an information on the generated signal oscillator's quality using a phase noise measure. If the signal was a pure carrier, it ...
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How to Extract frequency bands from Short-time Fourier Transform?
I am reproducing the results reported by the author in a research paper. In which he takes the STFT of EEG signals. The input data has a shape of (1 X500) and I used Scipy library built-in function to ...
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Bandwidth for a binary chirp spread spectrum system
Let's say data rate requirement for some application is 36Kbps.
For a binary Chirp spread spectrum system, SF=6 is taken so that M=64. Time * bandwidth = 64.
If binary 1 is represented as Upchirp and ...
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Help in designing filter for DUC (Digital Up-Converter) and DDC (Digital Down-Converter) using the built-in DUC and DDC blocks in MATLAB Simulink
Can anyone please help me in simulating a simple BPSK transceiver system that correctly receives a signal through a DUC and DDC? I have attached the screenshot of my Simulink system along with ...
