Efficient Blind Detection Scheme Based on Simplified Decoding of Polar Codes

In blind detection, both the downlink control information (DCI) format and the physical downlink control channel format are unknown, which results in high detection complexity. If the DCI format can be determined, half of the invalid candidates will be eliminated, which can significantly reduce the detection complexity. To determine the DCI format, this letter designs a DCI metric based on a corre...