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Bit-Loaded PAPR Reduction for High-Data-Rate Through-Metal Control Network Applications
Journal article   Peer reviewed

Bit-Loaded PAPR Reduction for High-Data-Rate Through-Metal Control Network Applications

Magdalena Bielinski, Guillermo Sosa, Kevin Wanuga, Richard Primerano, Moshe Kam and Kapil R Dandekar
IEEE transactions on industrial electronics (1982), v 61(5), pp 2362-2369
May 2014

Abstract

adaptive modulation Acoustic data transmission orthogonal frequency-division multiplexing (OFDM) peak-to-average power ratio (PAPR) reduction
Data transmission through metallic structures is commonly required in industrial control applications. In a number of these applications, mechanically penetrating the structure to pass cables and establish a wired communication link is either impossible or undesirable. Examples of such structures include metal bulkheads, pressure vessels, or pipelines. Ultrasonic signaling has been proposed as a solution for through-metal data transfer without penetrating the structure. The reverberant nature of the through-metal channel, however, can lead to significant intersymbol interference, limiting the data rate achievable by conventional single-carrier communication techniques. In this paper, we describe a through-metal communication technique that exploits the slow-varying nature of the ultrasonic channel to implement an orthogonal-frequency-division-multiplexing-based rate-adaptive peak-to-average power ratio (PAPR) reduction algorithm. Measurements of the proposed adaptive algorithm have demonstrated transmitted throughput rates of up to 14 Mbps while reducing PAPR by up to 3 dB and maintaining a bit error rate of 10 - 5 at average transmit powers of roughly 6 dBm. This enhancement provides the required throughput and error rate to support high-rate network applications in otherwise data-limited environments.

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Web of Science research areas
Automation & Control Systems
Engineering, Electrical & Electronic
Instruments & Instrumentation
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