Design and Performance of the Polar Coded Modulation for High Mobility Communications
Peiyao Chen, Baoming Bai · 2018
With the development of the high-speed trains (HST), high spectral efficiency and low latency in high mobility scenarios have become an urgent demand. In this paper, we consider bandwidth-efficient multilevel coding (MLC) based on polar codes under high mobility scenarios. Since the use of a lot of binary coding levels and large list sizes will lead to a high latency for polar decoding, we first introduce a new kind of nonbinary polar codes based on multiplicative repetition method. Then, we employ the proposed codes as component codes for MLC scheme, and optimize the design for high mobility scenarios with low latency. Simulation results show that nonbinary polar coded MLC scheme (with less coding levels) outperform LTE turbo codes with high-order modulations, and can exhibit similar performance of binary polar coded bit-interleaved coded modulation scheme but with a smaller list size (reflecting low latency) over HST channels.