Experimental results for coded systems with pulsed RFI
Abstract
Experimental results are given for Viterbi decoder performance in the presence of randomly occurring RFI pulses of fixed length and power. Results are presented both for RFI pulses longer and shorter than a code symbol time. In addition, performance both with and without the use of clipping as an interference mitigation technique is compared. The actual symbol synchronizer AGC has a significant effect on measured performance degradation. Measured results are compared with analytical results for a model of the AGC and for an optimum system. The demodulator quantizer output statistics are also measured for comparison with analytical results. Recommendations are made for implementation of AGC in an interference environment.
- Publication:
-
Numerical Transmission by Cable, Vol. 1
- Pub Date:
- 1980
- Bibcode:
- 1980ntc.....1....3C
- Keywords:
-
- Automatic Gain Control;
- Channel Noise;
- Pulse Communication;
- Radio Frequency Interference;
- Signal Encoding;
- Convolution Integrals;
- Degradation;
- Demodulators;
- Random Noise;
- Tdr Satellites;
- Viterbi Decoders;
- Communications and Radar