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A 60-GHz Antenna-Duplexed Modular Front-End for Channel Sounding and Physical Layer Security | IEEE Journals & Magazine | IEEE Xplore

A 60-GHz Antenna-Duplexed Modular Front-End for Channel Sounding and Physical Layer Security


Abstract:

Distinctive propagation characteristics of millimeter wave (mmWave) bands require channel sounding for link management. Reported mmWave channel-sounder setups support onl...Show More

Abstract:

Distinctive propagation characteristics of millimeter wave (mmWave) bands require channel sounding for link management. Reported mmWave channel-sounder setups support only simplex operation while depending on bulky and expensive lab equipment; especially for frequency domain channel sounding (FCS), which can be performed with simple hardware. This work presents a solution in the form of a 60GHz modular front-end designed using off-the-shelf components with tailor-made passive circuits and high-frequency interconnections, all compatible with printed circuit technology. An FCS setup is developed using two units of the designed transceiver front-ends, which can sweep 6GHz bandwidth with 1MHz resolution. An antenna duplexing circuitry is also presented, which enables each front-end unit to use a single transmit-receive antenna ensuring a high correlation between the round-trip channels. To the best of the authors’ knowledge, this work reports the first FCS setup, which preserves channel reciprocity in round-trip sounding. The application of the designed system is showcased through a channel reciprocity key generation (CRKG) algorithm, which exploits the high correlation between the forward and receive channels to demonstrate a physical layer security system functional at 60GHz.
Published in: IEEE Transactions on Circuits and Systems I: Regular Papers ( Volume: 71, Issue: 12, December 2024)
Page(s): 6152 - 6165
Date of Publication: 01 August 2024

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