Mitigating Bit-Synchronization Errors in Huffman-Coding-Aided Index Modulation

Ye Liu; Justin P. Coon

doi:10.1109/LCOMM.2018.2889757

Mitigating Bit-Synchronization Errors in Huffman-Coding-Aided Index Modulation

Ye Liu^*, Justin P. Coon

^*Corresponding author for this work

University of Oxford

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

When utilizing all subcarrier activation patterns in the combinatorial index modulation (IM) scheme, existing techniques either fail to realize the maximum possible throughput enhancement or fail to address the bit-level synchronization issue (or error propagation) due to the variable-length nature of the index-domain codebook. To address these drawbacks, we propose using Huffman coding for IM together with two constellation mappings for the bandpass modulation. The proposed scheme induces no signal overhead and is applicable when the index-domain codebook has the maximum encoding rate. Simulations demonstrate the effectiveness of the proposed scheme in mitigating bit-level synchronization errors.

Original language	English
Article number	8588988
Pages (from-to)	426-429
Number of pages	4
Journal	IEEE Communications Letters
Volume	23
Issue number	3
DOIs	https://doi.org/10.1109/LCOMM.2018.2889757
Publication status	Published - Mar 2019
Externally published	Yes

Keywords

Huffman coding
Index modulation
error propagation
synchronization error

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10.1109/LCOMM.2018.2889757

Cite this

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abstract = "When utilizing all subcarrier activation patterns in the combinatorial index modulation (IM) scheme, existing techniques either fail to realize the maximum possible throughput enhancement or fail to address the bit-level synchronization issue (or error propagation) due to the variable-length nature of the index-domain codebook. To address these drawbacks, we propose using Huffman coding for IM together with two constellation mappings for the bandpass modulation. The proposed scheme induces no signal overhead and is applicable when the index-domain codebook has the maximum encoding rate. Simulations demonstrate the effectiveness of the proposed scheme in mitigating bit-level synchronization errors.",

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AB - When utilizing all subcarrier activation patterns in the combinatorial index modulation (IM) scheme, existing techniques either fail to realize the maximum possible throughput enhancement or fail to address the bit-level synchronization issue (or error propagation) due to the variable-length nature of the index-domain codebook. To address these drawbacks, we propose using Huffman coding for IM together with two constellation mappings for the bandpass modulation. The proposed scheme induces no signal overhead and is applicable when the index-domain codebook has the maximum encoding rate. Simulations demonstrate the effectiveness of the proposed scheme in mitigating bit-level synchronization errors.

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Mitigating Bit-Synchronization Errors in Huffman-Coding-Aided Index Modulation

Abstract

Keywords

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