A Novel Channel Coding Scheme for Digital Multiple Access Computing
Xiaojing Yan, Saeed Razavikia, Carlo Fischione

TL;DR
This paper introduces ReChCompCode, an enhanced channel coding scheme for digital multiple access computing that significantly reduces computation errors by optimizing constellation design and repetition coding.
Contribution
It proposes a novel encoding scheme with optimized constellation and repetition coding, improving over existing ChannelComp methods for over-the-air computation.
Findings
ReChCompCode reduces computation error by up to 30 dB.
The scheme effectively improves performance for product functions.
Optimization divides into two manageable subproblems.
Abstract
In this paper, we consider the ChannelComp framework, which facilitates the computation of desired functions by multiple transmitters over a common receiver using digital modulations across a multiple access channel. While ChannelComp currently offers a broad framework for computation by designing digital constellations for over-the-air computation and employing symbol-level encoding, encoding the repeated transmissions of the same symbol and using the corresponding received sequence may significantly improve the computation performance and reduce the encoding complexity. In this paper, we propose an enhancement involving the encoding of the repetitive transmission of the same symbol at each transmitter over multiple time slots and the design of constellation diagrams, with the aim of minimizing computational errors. We frame this enhancement as an optimization problem, which jointly…
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
Topicsgraph theory and CDMA systems · Advanced Wireless Communication Techniques · Advanced Wireless Communication Technologies
