Asynchronous Chirp Slope Keying for Underwater Acoustic Communication
| Autor: | Christian Schindelhauer, Andrea Gabbrielli, Johannes Wendeberg, Fabian Hoflinger, Stefan J. Rupitsch, Wenxin Xiong, Dominik Jan Schott, Georg Fischer |
|---|---|
| Přispěvatelé: | Publica |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Computer science
acoustic communication Matched filter digital signal processing Chemical technology Chirp spread spectrum Keying ultrasound acoustics TP1-1185 wireless communication engineering_other Article symbols.namesake Additive white Gaussian noise chirp spread spectrum underwater communication symbols Chirp Demodulation chirp slope keying chirp modulation Algorithm Rayleigh fading Communication channel |
| Zdroj: | Sensors, Vol 21, Iss 3282, p 3282 (2021) Sensors (Basel, Switzerland) Sensors Volume 21 Issue 9 |
| ISSN: | 1424-8220 |
| Popis: | We propose an asynchronous acoustic chirp slope keying to map short bit sequences on single or multiple bands without preamble or error correction coding on the physical layer. We introduce a symbol detection scheme in the demodulator that uses the superposed matched filter results of up and down chirp references to estimate the symbol timing, which removes the requirement of a preamble for symbol synchronization. Details of the implementation are disclosed and discussed, and the performance is verified in a pool measurement on laboratory scale, as well as the simulation for a channel containing Rayleigh fading and Additive White Gaussian Noise. For time-bandwidth products (TB) of 50 in single band mode, a raw data rate of 100 bit/s is simulated to achieve bit error rates (BER) below 0.001 for signal-to-noise ratios above −6 dB. In dual-band mode, for TB of 25 and a data rate of 200 bit/s, the same bit error level was achieved for signal-to-noise ratios above 0 dB. The simulated packet error rates (PER) follow the general behavior of the BER, but with a higher error probability, which increases with the length of bits in each packet. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|