Efficiency Evaluation of Group Signals Transformation for Wireless Communication in V2X Systems
Vladislav V. Ivanov, Ekaterina A. Lopukhova, Grigory S. Voronkov, Igor V. Kuznetsov, Elizaveta P. Grakhova · 2022
A brief review of vehicle-to-everything communication channels is carried out. Traditional methods of latency reducing and ensuring energy efficiency are able to improve these parameters separately, but not simultaneously. The method of group signals transformation is briefly described, and it is shown, that the probabilistic characteristics of the sensor signals of the connected car meet the requirements necessary to apply the described method. Simulation performed shows the effectiveness of this method for improving the analog-to-digital conversation parameters. It is shown, that the quantization error level may be reduced twice and the analog-to-digital converter signal-to-noise level increased by 8 dB. It is also shown that the effective number of bits may be reduced by 1 bit, which decreases the codeword length (and, so, latency) and improves the energy efficiency by 34% for the 8-bit analog-to-digital converter example. Further research may be aimed at using the group signals transformation for improving vehicle-2-everything systems noise immunity.