Questions tagged [bpsk]

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45 views

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'...
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2answers
97 views

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 ...
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1answer
62 views

Simulation of signal modulation in Vivado VHDL

I am trying to simulate a BPSK modulation in VHDL. I did a simulation in MAtlab and after that rewrote it to VHDL by using MATLAB tool. ...
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0answers
26 views

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 ...
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2answers
174 views

what factor (in dB) is the output SNR or signal power affected by this phase error?

In a BPSK system, if at the receiver the oscillator has a phase error of phi =40° i.e. you are multiplying the received signal with an appropriate cosine signal phase shifted by 40°. Then, after low ...
2
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1answer
117 views

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 ...
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1answer
31 views

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 ...
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1answer
215 views

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 ...
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1answer
181 views

Differential encoder output of PSK modulation input

I am a bit confused to the answer given for the following question. The question reads as follows: If the input to a binary differential PSK modulation system is 01100101000111 tabulate The ...
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1answer
102 views

Will a BPSK Demodulator designed for [ 0º , 180º ] symbols work for [ +60º , -60º ] symbols?

I am using an IQ-based digital demodulator circuit IC to receive and decode BPSK signals. It is designed for ordinary BPSK signals, which have [ 0º , 180º ]. However, the signals I am intending to ...
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1answer
307 views

BPSK and ULTRASOUND [closed]

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 ...
2
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1answer
270 views

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) ...
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1answer
534 views

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 ...
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1answer
1k views

Calculating Data rate function of bandwidth and SNR

I plotted BER vs SNR for BPSK modulation in Matlab and I am given bandwidth of channel (bandlimited channel). lets say it is BW1. I would like to find the data rate based on this information. I am ...
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0answers
1k views

Porting Costas Loop from Matlab to FPGA

I have designed a Costas Loop for carrier synchronization in MATLAB, here is my code: ...
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1answer
3k views

Implementation of PSK modulation/demodulation

I want to implement a BPSK modulation/demodulation using a microcontroller (Arduino Due). The carrier signal should be at 1-50 MHz and the information rate at 300 KHz. For the sender part I would ...
4
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1answer
479 views

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 ...
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1answer
489 views

BER for BPSK over AWGN Channel [closed]

A BPSK scheme operating over an AWGN channel with noise power spectral density of \$N/2\$, uses equiprobable signals \$S_1(t) = \sqrt{\frac{2E}{T} sin\ t}\$ and \$S_2(t) = -\sqrt{\frac{2E}{T}sin\ t}\$ ...
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1answer
705 views

BER for AWGN Channel

I'm finding it very difficult to tackle questions in exams involving calculation of Probability of error and Bit error rate for various digital modulation schemes involving AWGN Channel. Firstly is ...
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2answers
3k views

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 ...
5
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1answer
1k views

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, ...