Questions tagged [bit-error]

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1answer
88 views

Decoding an unknown serial bitstream that does not fit 8-N-1

I am looking at an RS-485 signal using a scope and an analyzer (saleae). This is running a mystery bus (see below for more information). I would like to know how to fix my frame errors. I can't begin ...
0
votes
1answer
40 views

In Proteus 8 simulation of the PIC16F84A assembly code (.asm), any setting (BSF) or clearing (BCF) of the pins <3:0> clears pin RA4!

After a thorough investigation, it turns out that the Proteus 8 simulation of the PIC16F84A (and possibly other MCU-s in PIC16 family) has a bug when interpreting the assembly language code, which ...
0
votes
1answer
29 views

What effect does having 'measured' as a parameter in additive white gaussian noise?

I'm comparing the bit error rate of various modulation schemes with additive white gaussian noise in MATLAB. There's the option to have this noise using 'measured' which measures the power of a ...
0
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0answers
47 views

How to calculate BER and sweep time from eye diagram?

I am iterating the SI simulation for the traces of the USB and LPDDR3 interfaces with processor. Is there any method to calculate the BER and sweep values from the eye diagram?
1
vote
1answer
19 views

Need some help in bit error rate calculation for QPSK when using Gray coding

Why is Probability of Bit Error = 2 times the Probability of Symbol Error in QPSK with Gray Coding. Is it because one bit error has the potential to cause two symbol errors (2 symbols where they ...
1
vote
1answer
95 views

Bitstream autocorrelation? - comparing two bitstreams - BER?

I am sending a PN9 sequence from a sender to a receiver and want to compare the received bitstream (RB) to the sent one (SB). I am assuming that the transmission will get distorted and want to somehow ...
12
votes
5answers
4k views

Why bother with even parity?

I am using an SPI peripheral in my application. The peripheral returns packets containing 15 data bits, plus an Even Parity bit for error detection. Therefore all zeros, and all ones both pass the ...
0
votes
1answer
151 views

BER as a function of antenna's diameter

I hope that this community is the most suitable for this kind of question. So I have to make a graph representing dependence of BER as a function of antenna's diameter (BER(D)) I know that antenna's ...
1
vote
2answers
185 views

Neutron Single Event Upset (NSEU) how its effect is mitigated in electronics in space vehicles?

Since in the outer space the NSEU will be more common than in the earth, how the electronics in space vehicle is tacking the issue. I feel a solution will be existing for some decades but on google I ...