Questions tagged [bpsk]
BPSK, a mechanism of modulation is expanded Binary Phase Shift Keying.
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Having trouble transmitting/receiving a BPSK signal using two USRPs
I am relatively new to working with SDRs and GNURadio and I am attempting to generate a BPSK signal and transmit it through one USRP and receive and demodulate it on another USRP. I am using GNURadio ...
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Synchronization of BPSK with variable-length symbols (ISO 14443)
Does anyone have an idea how one would perform BPSK symbol synchronization if symbol length is allowed to vary?
As dumb as that sounds, this is not a theretical question.The "Proximity" Type B NFC ...
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Side Lobes with different power level in BPSK PSD
I determined the PSD of a BPSK modulated signal using the MATLAB pwelch function and default parameters. My code looks like the following:
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Effect of Passband Slope on a BPSK Constellation
What is the effect of a passband slope on a BPSK constellation? (This is a companion question to the related "DSP Puzzle" for QPSK)
Specifically given a linear slope (in magnitude, not dB), ...
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How to find the noise power in my simulation
I am currently working a tricky communication chain that I want to simulate into Matlab.
The chain is like a classic BPSK modulator/demodulator chain, but where the BPSK modulated signal has been ...
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GPS CDMA signal acquisition (BPSK modulation)
Sorry, this may be a rookie question: I have a CDMA gps communication in BPSK. Codes have a duration equal to $1\ \text{ms}$ and their length is 1023. At the carrier frequency ($f_c = 1.57524\ \text{...
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How does a Costas Loop lock to one of multiple BPSK signals
I've been looking into how GPS receivers work in terms of signal processing. When a GPS receiver tracks the received signal, it often uses a Costas loop to synchronize the carrier.
How that works ...
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Writing a BPSK Demodulator
As part of a larger project, I've been attempting to implement a demodulator for RDS, a digital transmission standard in FM broadcasting, in software with C++. I've easily been able to get as far as ...
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How to design a cosine filter for bpsk using liquid dsp?
I was trying to build a (B)PSK-63 modulator as my hobby project.
Here is my code and the link to specs:
How to modulate PSK63 with liquiddsp?
Now it is working, but since I am using a NCO to shift the ...
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Capacity achieving codes for BPSK at low SNR
I don't know a lot about comm system design.
I have an AWGN channel and low SNR (-3dB). Bandwidth is constrained to some maximum, B. I would like to know good choices of modulation and coding to ...
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BPSK and pulse shaping (square-root raised cosine)
I'm trying to make my own transmitter & receiver in MATLAB, starting with the basics and adding more complex stuff as I progress. So I have a few questions regarding pulse shaping and more ...
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How to find frequency and phase shift in the recorded wave( .wav file )
I am working on BPSK at frequecies near 20 kHz with a sample rate of 44100 Hz.
We can't afford sample rates above than this due to computational complexities.
Have found that the frequency of ...
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What effect does mutipath have on estimating optimal sampling time using the averaging method described therein
This question takes off from this question regarding syncronization of BPSK signals. For the sake of argument let us assume 10 samples make up 1 bit.
One method currently suggested is break up the ...
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Unable to discern between GFSK and BPSK
Greetings Forum!
I posted a question sometime back and got some relevant feedback on that question however I have now run into another issue.
I am using a radio to transmit a 2-GFSK waveform. I used ...
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Comparing communication systems with different modulation orders and code rates
I propose an end-to-end communication method in my research. The key part of the method is not the channel coding and modulation but we use them anyway. I am using 1/3 rate Turbo codes with QPSK and ...
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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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iq bpsk waveform generation
We have a DAC capable of being driven with IQ data (thus the bandwidth is $-f_s/2$ to $f_s/2$), and the task is to create an "arbitrary" BPSK waveform at IF. I think that means generating ...
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The difference about QPSK, BPSK and 16-QAM in spectrum
What is the difference about QPSK, BPSK and 16-QAM in spectrum? I just simulated all three, but I can't see the difference clearly.
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How is maximum log likelihood calculated for BPSK?
I am seeking to understand, exactly, how to calculate a soft MLL output from a received BPSK signal, and what information is needed. I would like to implement turbo coding in my system, but the ...
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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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Correct Noise for NOMA system
I am trying to simulate a NOMA system with SIC, but I'm so confusing with the noise expression: $n_m \sim CN(0, \sigma^2_m)$, is zero mean complex additive Gaussian noise with variance at mth user
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Modulation in laser satellite communication
In small satellite communication technique we can use optical spectrum (optical (laser) communication system). The common and simplest modulation techniques used are On and Off
keying (OOK), Q-ary PPM ...
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Create a Range Doppler Map using "Arbitrary" phase coded Waveforms
This is my first questions I am asking to this community!
I want to understand how to create a Range-Doppler Map (RDM) for a phase/frequency coded radar return using an arbitrary waveform generator (...
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bpsk demodulation only with STM32
for an internship I have to create a communication between 2 devices at 30Khz.
we choose a BPSK modulation.
I create du Tx with a stm32 and a DDS (AD9834).
Now I trying to code the demodulation with a ...
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Correcting large frequency offsets at very low data rates
Consider a typical BPSK system running at a baud rate of 1 kbaud/sec - the receiver needs to deal with severe frequency offsets, let's say up to +/- 1 MHz offset and that the frequency offset can ...
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PSD graph of GPS L1 Signal on MATLAB
I'm trying to analyze GPS L1 C/A signal on MATLAB. I could generate the PRN codes(binary signals). After I add NAV Data to the PRN code using modulo 2, I need to modulate it using BPSK. I also could ...
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Learning PSK Modulation and Demodulation - Good Text to Read?
Title sums it up. I am curious to see what you all suggest. I'm a newbie and just need some beginner/intermediate material.
Thanks!
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additive white Gaussian noise -ask fsk psk
i want to simulate a system that uses ask,fsk ,psk in Matlab with additive Gaussian noise for each mode . figure shows the system propti and Eb/N0=6db my question is how to calculate the standard ...
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BER vs Eb/N0 for BPSK signal with depth of modulation 120 degrees (+-60 degrees)
I want to draw graph of function BER vs Eb/N0 for BPSK modulation with depth of modulation is from –60 to 60 degrees (or from 0 to 120 degrees). Can I use for that MatLab's tool 'bertool', or I need ...
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CDMA-DSSS with orthogonal codes and BPSK modulation: proper way to demodulate
I am having problems when demodulating the signal: If I demodulate the sequence chip by chip and then operate only with binary information the "integrate and dump" (correlator) sometimes will provide ...
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DAC ADC for BPSK modulation
I have written Matlab script for BPSK modulation. The way my code works is as follow:
series of 0 and 1----> NRZ data (continuous rectangular pulses with amplitude -1 and 1)--->multiply by carrier----...
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Very high SNR BPSK modulation
I am using BPSK modulation to modulate a signal in continuous time (making rectangular waveform, multiplying by a carrier). The channel is band-limited and frequency-selective, and has the following ...
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How to find the bandwidth of the transmitted M-FSK signal?
I'm tried to find the solution, but I failed.
my question in the figure below, and the correct answer it's shown at the end of Figure.
I'm using this formula but the answer is not correct!
Is there ...
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power spectrum of passband of ofdm is it right shape or not?
I tried to get power spectrum of ofdm passband signal.
Below is the whole matlab code for that with BPSK+ofdm.
and I got the power spectrum as below.
I wonder that is that right form or not?
...
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Discussion of simulation results of a signal sequence: amplitude
I need your help in understanding if the simulation result is correct.
I have simulated a random BPSK sequence that was upsampled and filtered with a raised cosine filter.
The length of the filter is ...
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How do we know the receiver delay in an OFDM transceiver system?
I was simulating a simple OFDM transceiver system without a channel (just the transmitter and the receiver directly connected). I saw that if I use the "Find Delay" block in Simulink between the ...
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How to set a Carrier Wave for DBPSK Modulators in gnuradio?
for a Project I need to build an Audio Modem in GNU Radio.
I decided, that it would be the best to use DBPSK Modulation, because that is fast and relatively noise resistant.
But as it seems, the ...
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A Practical Method for Correcting Phase Errors in a Transceiver System Comprising of OFDM + DUC and DDC
I am back with a question related to my OFDM Transceiver System that I am designing where I use DUC and DDC. I could get rid of the high BER problem. I realized that the problem was due to the phase ...