A third-party efficient PDCCH blind detection methodbased on the selection of polar decoding metrics

Abstract

To investigate and design an efficient blind detection method for third-party scenarios, a third-party efficient physical downlink control channel(PDCCH)blind detection method was proposed based on polar decoding metric selection. This method comprised two main components: the study of the polar decoding algorithm, which introduced a polar decoding metric based on downlink control information(DCI)length and proposed an improved third-party blind detection method based on polar decoding metric selection; and the investigation of the PDCCH blind detection algorithm, which introduced a reordering blind detection algorithm. The enhanced polar decoding algorithm and reordering blind detection algorithm were organically combined to present an efficient PDCCH blind detection method for third-party scenarios. The proposed method was validated and analyzed using a 5G PDCCH blind detection simulation link on the MATLAB platform. The results show that the proposed method effectively reduces the number of PDCCH blind detections and the count of DCI candidates while enhancing blind detection efficiency and ensuring target capture accuracy.

Keywords

polar decoding / physical downlink control channel(PDCCH) / blind detection / downlink control information(DCI)