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Mapping Selection and Code Construction for 2m-ary Polar-Coded Modulation
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DOI：10.1109/LCOMM.2012.040912.120070.png)
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Abstract
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This paper proposes a mapping strategy and a code construction method for 2(m)-ary polar-coded modulation. In order to find a good mapping for a polar code in an efficient way, we reduce a search space for mapping patterns by exploiting the properties of its polarizing matrix. Once a mapping is selected, the set of unfrozen information bits to define a polar code is automatically determined. Numerical results show that our approach can provide a performance gain of about 0.3 - 0.5 dB over a conventional approach using random mapping and the polar code optimized for binary phase-shift keying (BPSK) modulation, when pulse-amplitude modulation (PAM) with Gray labelling is employed.
Keywords:
Polar codes
pulse-amplitude modulation (PAM)
density evolution
frozen bit
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4.4
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1.3W
Citations:
2.2W
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