A 5g Trial Of Polar Code

Channel polarization based on Polar code has attracted more attentions since it was firstly proposed by Arikan in 2008. It is attractive owing to its structural property which makes the encoding process at the transmitter easy to be implemented. At the same time, Polar code is coming to industry due to its novel optimized decoding algorithms. But until now, Polar code has not yet been verified in trial. In this paper, Polar code will be verified in a 5G trial conducted jointly by Huawei and NTT DOCOMO. For comparison purpose, Turbo code in LTE is introduced as a baseline. Extensive tests are conducted with respect to configured air interface specifications such as frame structure and waveform. The effect of packet size on performance is also investigated. To obtain realistic testing results, besides the lab test by using a channel emulator, Over the Air (OTA) field trials are also conducted. Test results show significant performance gain of Polar code over Turbo code.