A Study on Future Aeronautical High-Speed Transmission Datalinks

Abstract

ICAO (International Civil Aviation Organization) has proposed future aeronautical datalink candidates that have much higher transmission rates than VDL (VHF Digital Link). The candidates, which will be operated in L-band, are collectively known as LDACS (L-band Digital Aeronautical Communication System).

We have developed an LDACS physical layer experimental system, which is named LPES. The system is a test bed to evaluate BER (Bit Error Rate) performances under various conditions. LPES consists of PC and USRP (Universal Software Radio Peripheral) and its software is written in python scripts with the GNU Radio signal processing library. This paper describes some results of LDACS BER performances obtained with our LPES.