LTE-PDCCH Link Simulation

This article presents an example of LTE PDCCH link simulation code that implements the complete Physical Downlink Control Channel (PDCCH) encoding and decoding process. The program simulates the PDCCH link in LTE systems, featuring CRC attachment, channel coding using tail-biting convolutional codes, rate matching, and QPSK modulation on the transmitter side. On the receiver side, it implements corresponding demodulation, rate recovery, Viterbi decoding, and CRC verification processes. Through this simulation, users can gain deep insights into PDCCH link operational principles and conduct related simulation experiments. The code structure includes key functions for control channel element (CCE) aggregation, interleaving, and resource mapping algorithms. This understanding enables better comprehension of PDCCH links in LTE systems and facilitates flexible adjustments and optimizations in practical applications. Overall, this simulation code serves as a valuable tool for researching and understanding PDCCH link performance characteristics in LTE networks.