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arXiv · 2309.16027

Bridging the complexity gap in Tbps-achieving THz-band baseband processing

Hadi Sarieddeen·Hakim Jemaa·Simon Tarboush·Christoph Studer·Mohamed-Slim Alouini·Tareq Y. Al-Naffouri
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Abstract

Recent advances in electronic and photonic technologies have allowed efficient signal generation and transmission at terahertz (THz) frequencies. However, as the gap in THz-operating devices narrows, the demand for terabit-per-second (Tbps)-achieving circuits is increasing. Translating the available hundreds of gigahertz (GHz) of bandwidth into a Tbps data rate requires processing thousands of information bits per clock cycle at state-of-the-art clock frequencies of digital baseband processing circuitry of a few GHz. This paper addresses these constraints and emphasizes the importance of parallelization in signal processing, particularly for channel code decoding. By leveraging structured sub-spaces of THz channels, we propose mapping bits to transmission resources using shorter code-words, extending parallelizability across all baseband processing blocks. THz channels exhibit quasi-deterministic frequency, time, and space structures that enable efficient parallel bit mapping at the source and provide pseudo-soft bit reliability information for efficient detection and decoding at the receiver.

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Hadi Sarieddeen, Hakim Jemaa, Simon Tarboush, Christoph Studer, Mohamed-Slim Alouini, Tareq Y. Al-Naffouri. 2023-09-27. Bridging the complexity gap in Tbps-achieving THz-band baseband processing. https://arxiv.org/abs/2309.16027

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