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Randomized Polar Subcodes With Optimized Error Coefficient
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DOI：10.1109/TCOMM.2020.3018781.png)
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Abstract
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A method for construction of polar subcodes with reduced error coefficient is presented. The proposed approach relies on explicit enumeration of low-weight non-zero codewords in a polar code, and construction of dynamic freezing constraints which define a subcode not containing most of these codewords. The obtained codes provide a large performance gain in the high-SNR region compared to non-optimized polar subcodes and polar codes with CRC.
Keywords:
Kernel
Error probability
Maximum likelihood decoding
Signal to noise ratio
Encoding
Parity check codes
Polar codes
polar subcodes
weight distribution
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