Software Based AFSK Generation on Arduino

Velasco, L.; Aranda, Andres Roldan

doi:10.1109/taee.2018.8475994

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2020

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“…This solution allows amateur radio operators around the world to collect information from the satellites and, in some cases, improve the system's communication ability [5], [6]. Furthermore, AFSK modem can be easily implemented on inexpensive programmable devices, facilitating its utilization [7].…”

Section: Introductionmentioning

confidence: 99%

All-digital AFSK modem with Viterbi detection for TT&C CubeSat transceiver

Pacelli¹,

Lucena²,

Mota³

2020

Anais De XXXVIII Simpósio Brasileiro De Telecomunicações E Processamento De Sinais

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Audio-Frequency Shift Keying (AFSK) with continuous phase modulation and non-coherent demodulation is widely used on the telecommand channel of the most TT&C transceivers for CubeSat. However, this solution has low efficiency in terms of power. In this paper, a new all-digital AFSK modem is proposed. The demodulator uses the Viterbi algorithm to perform the maximum likelihood sequence detection (MLSD) and gives an expressive gain when compared to non-coherent detection. Original mathematical analyzes are presented to explain the proposed system. Some performance results, determined via computational simulation, are presented and discussed.

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Section: Introductionmentioning

confidence: 99%