Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Polar Coded Modulation via Hybrid Bit Labeling   Bit-interleaved coded modulation (BICM) and multilevel coded modulation (MLC)
are commonly used to combine polar codes with high order modulation. While BICM
benefits from simple design and the separation of coding and modulation, MLC
shows better performance under successive-cancellation decoding. In this paper
we propose a hybrid polar coded modulation scheme that lies between BICM and
MLC, wherein a fraction of bits are assigned to set-partition (SP) labeling and
the remaining bits are assigned for Gray labeling. The SP labeled bits undergo
sequential demodulation, using iterative demodulation and polar decoding
similar to MLC, whereas the Gray labeled bits are first demodulated in parallel
and then sent for decoding similar to BICM. Either polar codes or other channel
codes (such as LDPC codes) can be used for the Gray labeled bits. For length
2048 rate 1/2 polar code on 256-QAM, the performance gap between BICM (Gray
labeling only) and MLC (SP labeling only) can be almost fully closed by the
hybrid scheme. Notably, the hybrid scheme has a significant latency advantage
over MLC. These performance gains make the proposed scheme attractive for
future communication systems such as 6G.

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The categories of this paper are: stat
34
The categories of this paper are: chem-ph
23
The categories of this paper are: solv-int
36
The categories of this paper are: cmp-lg
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The categories of this paper are: chao-dyn
20
The categories of this paper are: acc-phys
24
The categories of this paper are: dg-ga
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The categories of this paper are: q-fin
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The categories of this paper are: math-ph
6
The categories of this paper are: astro-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: adap-org
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The categories of this paper are: nucl-th
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The categories of this paper are: hep-ex
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The categories of this paper are: supr-con
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The categories of this paper are: mtrl-th