Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [bpsk]

24 questions
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Designing an optimal BPSK and/or QPSK transciever in SDR

I'm currently working on writing firmware for the modem on a cube satellite for my university's satellite team. My primary goal is to implement the data uplink & downlink. The RF system, completed before I arrived, receives on the 2m band and…
Synchrondyne
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Why it has used BPSK modulation after OFDM?

I am quite new to OFDM modulation. I am reading this from a tutorial. In one of its parts, for showing amplitude variation of the OFDM signals, there is a graph that has used 8 sub-carriers and BPSK modulation as below: Now I have faced to this…
CLAUDE
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Constellation of BPSK doesn't look as expected

I'm a total novice when it comes to RF beyond basic concepts. I'm trying to use a HackRF One to pull the data coming off of this transponder, which theoretically transmits data on a 3.59MHz carrier. I've followed some tutorials on BPSK demodulation,…
Drewster
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creating IQ data for LMS6002D SDR

I have an FPGA connected to an LMS6002D SDR from Lime micro. I also have an BladeRF board which I am using to help me verify the functionality. I starting out with trying to create IQ data for BPSK modulation and I am not sure if I am understanding…
Tom Berge
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Simulation of BPSK in fading channels

I'm trying to simulate BPSK in a channel with Rayleigh fading and AWGN, then obtain the Bit Error Probability (BEP). My program is written in C. I compared my BEP vs \$\frac{E_b}{N_0}\$ (SNR per bit) plot with one generated using the formula BEP =…
Rayne
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How to get BPSK data from I/Q signal

I am using AD8347(0.8 GHz to 2.7 GHz Direct Conversion Quadrature Demodulator) to demodulate a BPSK modulated carrier wave. There is no intermediate frequency used. By feeding the signal into this chip, I was able to get 4 outputs: IOPP, IOPN,…
bandofcs
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General approach of signal detection after demodulation of BPSK

I'm very new to electrical engineering. I'm trying to understand the basic approaches/options to detect symbols after demodulation of BPSK. I found some articles mentioning Maximum Likelihood detection…
6cfc1
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Probability of error of 2 identical BPSK channels

we know probability of error of single BPSK system is \$ Q(\sqrt{\frac{2E}{N}}) \$ then what will be the probability of error when two independent identical channels are connected and hence what will the value of \$ b \$ ?? i have proceeded like…
Suresh
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BPSK and ULTRASOUND

I need to design a system which will allow me to transmit data via ultrasound. I'm using BPSK modulation, the transducer frequency is 40Hz and the chipping frequency is 5kHz (however I can easily change that). The BPSK is done using a…
smokingRooster
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BPSK modulator with DDS on FPGA

I was developing a BPSK modulator with an AD9852. Since AD doesn't seem to offer any way to functionally simulate their DDS ICs, suddenly i see myself in the need to change for a FPGA architecture. I haven't work with an FPGA or VHDL yet. After…
Alejandro
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Porting Costas Loop from Matlab to FPGA

I have designed a Costas Loop for carrier synchronization in MATLAB, here is my code: % Siraj Muhammad % 25/3/2015 % BPSK Demodulator %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% load RRC.mat fc = 0.0500001; phase_offset = pi/7; N = length(rf_signal); bb =…
Siraj Muhammad
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How to recreate this type of sine jamming?

I'm trying to recreate this type of sine/tonal jamming in Python as part of my graduation project. I found this dataset in a published paper that described this type of jamming as "Sine Jamming" with no further explanation. I tried several methods…
mo.jolt
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How to decode TPMS FSK signal on Universal Radio Hacker

I am capturing the TPMS sensor transmission in URH, but i am having extremely hard time to decode correctly the signal. I know exactly what is the data string that my real sensor is transmitting and i also know from the supplier that the sensor uses…
Pedro Silva
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Where to start on creating radio circuits

I'd like to interface with a legacy system that uses BPSK at ~5MHz to transmit data. I understand the basic idea of BPSK - that it's a 180 degree phase shift to represent data - but I'm having a hard time finding examples that take an Arduino or…
Drewster
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Calculating throughput of BPSK channel with roll-off, error correction code, packet loss

A digital signal is transmitted with packets of: 240 bytes of information. control header of 10 bytes. reference signal of 700 μs/packet BPSK modulation. rolling factor of 0.25 1 MHz band. coding rate of 3/4. probability of packet loss of 10%. What…
Mart R
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