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Results tagged with software-defined-radio
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user 35514
0
votes
1
answer
222
views
oQPSK symbol synchronization
I'm validating a C++ oQPSK receiver. The 5Mbps oQPSK signal is generated by a satellite emulator. The receiver structure goes as follows:
SDR --> AGC --> Costa's Loop --> Delay --> Polyphase Symbol Sy …
0
votes
0
answers
137
views
Biphase/Manchester floating-point decoder based on matched filter
I need to perform soft Viterbi decoding on a Manchester-encoded BPSK/QPSK signals. To that end, I need a floating point Manchester decoder. Most of the implementations I have seen operate on hard bits …
1
vote
2
answers
779
views
G3RUH Multiplicative scrambler in C++
I have written and tested a G3RUH (1 + X^12 + X^17) descrambler. It seems to work quite well in an SDR project I'm working on. I'm currently working on a scrambler and I can't get it to work. Below is …
- 26k
3
votes
2
answers
229
views
Symbol time offset simulation
I ran a number of simulations for symbol timing synchronization in the past. I used GNU Radio mainly. Now, I'm trying to do the same thing in C++. To achieve that, I need a way to introduce symbol off …
- 3,426