![]() 38.211-6.3.1.5 says "For non-codebook-based transmission, the precoding matrix, equals the identity matrix.". NOTE : This is a little bit confusing to me. Simply put, this is all about determining W matrix in following equation.Īccording to 38.211 - 6.3.1.5, we can determine W matrix as follows. I think (hope) the number of UL layer would ramain as 1 for a long time -:).īasically PUSCH transmission mode is a parameter that determines Precoding matrix during the PUSCH channel processing(See here for the Precoding step in the whole PUSCH transport process) and the transmission mode is determined by several factors in RRC as shown below. Good thing would be that the precoding matrix is always 1 or Identity Matrix when the number of layer is 1. Basically most of this page is all about how a specific transmission mode/precoding matrix is determined by combination of these three parameters. ![]() Depending on the combinations (permutations) of these parameters, a specific transmission mode/precoding matrix is determined, but the detailed procedure is pretty complicated (confusing to me). Parameters for Transmission Mode Determinationįollowings are the major factors (configuration) to determine the PUSCH Transmission Mode and Precoding Matrix. Precoding matrix W for four-layer transmission using four antenna ports with transform precoding disabled.Precoding matrix W for three-layer transmission using four antenna ports with transform precoding disabled.Precoding matrix W for two-layer transmission using four antenna ports with transform precoding disabled.Precoding matrix W for two-layer transmission using two antenna ports with transform precoding disabled.Precoding matrix W for single-layer transmission using four antenna ports with transform precoding disabled.Precoding matrix W for single-layer transmission using four antenna ports with transform precoding enabled.Precoding matrix W for single-layer transmission using two antenna ports.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |