  In this paper, we propose a low-latency decoding solution of shortened polar
codes based on their automorphism groups. The automorphism group of shortened
polar codes, designed according to two existing shortening patterns, are shown
to be limited but non-empty, making the Automorphism Ensemble (AE) decoding of
shortened polar codes possible. Extensive simulation results for shortened
polar codes under AE are provided and are compared to the SC-List (SCL)
algorithm. The block-error rate of shortened polar codes under AE matches or
beats SCL while lowering the decoding latency.
