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arXiv · 2606.05765

PivCo-Huffman

Marcin Zukowski
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Abstract

Huffman encoding has been an enduring technique for 70+ years, ubiquitous in compression algorithms since its invention. In this paper we propose a new approach to Huffman coding, based on a data structure from wavelet trees. The resulting pivot-coded Huffman (PivCo-Huffman) enables high-performance SIMD-friendly encoding and decoding operations. In our tests PivCo-Huffman consistently outperforms state-of-the-art Huffman codecs in decoding throughput. Additionally, we show how ANS-coding can be selectively applied to skewed nodes in this structure, yielding compression ratios approaching those of ANS-based codecs while preserving very high decompression speeds.

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Marcin Zukowski. 2026-06-04. PivCo-Huffman. https://arxiv.org/abs/2606.05765

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