Mapping Selection and Code Construction for 2(m)-ary Polar-Coded Modulation

作者：Shin Dong Min^*; Lim Seung Chan; Yang Kyeongcheol

来源：IEEE Communications Letters, 2012, 16(6): 905-908.

DOI：10.1109/LCOMM.2012.040912.120070

• Polar codes
• pulse-amplitude modulation (PAM)
• density evolution
• frozen bit

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.

• 出版日期2012-6