AX.25 Protocol Compatible Reconfigurable 2/4 FSK Modulator Design for Nano/Micro-Satellites

Dilek S. M., Ayranci A., Seker A., Ceylan O., Yağcı H. B.

20th Telecommunications Forum, Belgrade, Sırbistan Ve Karadağ, 20 - 22 Kasım 2012, ss.416-419 identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Basıldığı Şehir: Belgrade
  • Basıldığı Ülke: Sırbistan Ve Karadağ
  • Sayfa Sayıları: ss.416-419
  • İstanbul Teknik Üniversitesi Adresli: Evet

Özet

In this paper, implementation of a FPGA-based and VHDL coded reconfigurable frequency shift keying (FSK) modulator for nano-satellite communication systems is presented. Reconfigurable FSK modulator includes 2-FSK and 4-FSK modulators. The system is compatible with AX.25 data link layer protocol for general amateur radio communication which is popular in micro/nano satellite communication. ROM based direct digital synthesizer (DDS) generates a sinusoidal wave at the output with a specified frequency and phase.