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arXiv · 2507.13689

Density Evolution Analysis of Sparse-Block IDMA

Jean-Francois Chamberland·Gianluigi Liva·Krishna Narayanan
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Abstract

Sparse block interleaver division multiple access (SB-IDMA) is a recently introduced unsourced multiple access protocol that aims to improve the performance of the grant-free two-step random access transmission protocol of the 3GPP 5G New Radio standard. We introduced a density evolution analysis of the successive interference cancellation receiver of SB-IDMA, providing a theoretical characterization of its performance.

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Jean-Francois Chamberland, Gianluigi Liva, Krishna Narayanan. 2025-07-18. Density Evolution Analysis of Sparse-Block IDMA. https://arxiv.org/abs/2507.13689

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