Smart green ocean underwater IoT network by ICA-based acoustic blind MIMO OFDM transceiver With analysis of acoustic channel sparsity and blind estimation efficinecy in data rate and energy consumption
Autor:
Khosravy, Mahdi
; Gupta, Neeraj
; Dey, Nilanjan
; Moreno-Ger, Pablo
Fecha:
2021Palabra clave:
Revista / editorial:
Earth science informaticsTipo de Ítem:
articleResumen:
Multi-Input Multi-Output (MIMO) telecommunication systems with Orthogonal Frequency Division Modulation (OFDM) scheme support high rate data exchange which can be efficiently applied to the fast-growing networks of Internet of Things (IoT). In the case of Underwater IoT (UIoT) where the strength of electromagnetic waves rapidly falls off, the MIMO network can be effectively implemented by substitute of acoustic OFDM instead of the normal one. Due to these advantages, this research work suggests ICA based acoustic MIMO OFDM for UIoT wherein the data rate is further improved as the MIMO OFDM is implemented based on blind channel estimation and multi-user identification without the need for using any pilot and preamble data. Also, theoretical analysis shows the data rate increases and energy consumption decreases due to ICA-based MIMO acoustic channel estimation. In the case of the under-work UIoT network, it achieves 52.38% higher data rate, and 41.67% less energy consumption. As another specific result, the proposed method shows high efficiency on sparse underwater channels and as the channel sparseness gets lower, the efficiency decreases.
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