Bridging the Complexity Gap in Tb/S-Achieving THz-Band Baseband Processing
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Date
2024-10
Publication Type
Journal Article
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yes
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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 (Tb/s)-achieving circuits is increasing. Translating the available hundreds of gigahertz (GHz) of bandwidth into a Tb/s data rate requires processing thousands of information bits per clock cycle at state-of-theart clock frequencies of digital baseband processing circuitry of a few GHz. This article 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 codewords, 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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published
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Journal / series
Volume
31 (5)
Pages / Article No.
287 - 294
Publisher
IEEE
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Software
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Subject
Terahertz communications; Decoding; Baseband; Complexity theory; Throughput; Signal processing; Hardware
Organisational unit
09695 - Studer, Christoph / Studer, Christoph