Energy-efficient optimal relay design for wireless sensor network in underground mines

The transceiver design for multi-hop multiple-input multiple-output (MIMO) relay is very challenging, and for a large scale network, it is not economical to send the signal through all possible links. Instead, we can find the best path from source-to-destination that gives the highest end-to-end sig...

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Vydáno v:Journal of network and computer applications Ročník 243; s. 104303
Hlavní autoři: Alam, Md Zahangir, Ammari, Mohamed Lassaad, Jamalipour, Abbas, Fortier, Paul
Médium: Journal Article
Jazyk:angličtina
Vydáno: Elsevier Ltd 01.11.2025
Témata:
Amplify-and-forward (AF) protocol
Block-diagonal (BD) technique
Minimum mean square error (MMSE) criterion
Multihop MIMO systems
Wireless sensor networks (WSNs)
Multihop MIMO systems
Minimum mean square error (MMSE) criterion
Block-diagonal (BD) technique
Amplify-and-forward (AF) protocol
Wireless sensor networks (WSNs)
ISSN:1084-8045
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Shrnutí:The transceiver design for multi-hop multiple-input multiple-output (MIMO) relay is very challenging, and for a large scale network, it is not economical to send the signal through all possible links. Instead, we can find the best path from source-to-destination that gives the highest end-to-end signal-to-noise ratio (SNR). In this paper, we provide a linear minimum mean squared error (MMSE) based multi-hop multi-terminal MIMO non-regenerative half-duplex amplify-and-forward (AF) parallel relay design for a wireless sensor network (WSN) in an underground mines. The transceiver design of such a network becomes very complex. We can simplify a complex multi-terminal parallel relay system into a series of links using selection relaying, where transmission from the source to the relay, relay to relay, and finally relay to the destination will take place using the best relay that provides the best link performance among others. The best relay selection using the traditional technique in our case is not easy, and we need a strategy to find the best path from a large number of hidden paths. We first find the set of simplified series multi-hop MIMO best relays from source to destination using the optimum path selection technique found in the literature. Then we develop a joint optimum design of the source precoder, the relay amplifier, and the receiver matrices using the full channel diagonalizing technique followed by the Lagrange strong duality principle with known channel state information (CSI). Finally, simulation results show an excellent agreement with numerical analysis demonstrating the effectiveness of the proposed framework. •Optimal design of linear multi-hop MIMO parallel transceiver for WSN in underground mines.•Simplify the complex multi-hop parallel relay system into a series of best MIMO links.•Design of joint source precoder, the relay amplifier, and the receiver matrices for the MIMO links.•Shows the performance improvement of the proposed design over the existing scheme.
ISSN:1084-8045
DOI:10.1016/j.jnca.2025.104303