Subcarrier mapping techniques for guard interval-based orthogonal frequency division multiplexing communications
摘要
說明書
In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the permutation matrix may be based on a first number of columns of a sub-matrix of a first matrix, where the first matrix is based on an IFFT matrix that is used to generate an OFDM symbol of the OFDM communication, and where the first number of columns correspond to a number of subcarriers that carry the first set of time-domain guard interval samples. In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the first number of columns of the sub-matrix may be selected as quasi-equidistant columns from a total number of columns of the first matrix. In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the first matrix may be a product of the IFFT matrix and a sub-carrier mapping matrix, and the sub-matrix includes columns of the first matrix that correspond to a subset of active subcarriers for the OFDM symbol that do not include guard subcarriers associated with a guard band of the OFDM symbol. In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the first matrix corresponds to the IFFT matrix, and the sub-matrix includes columns of the first matrix that correspond to all subcarriers for the OFDM symbol including guard subcarriers associated with a guard band of the OFDM symbol, and one or more columns of the sub-matrix that are associated with the guard subcarriers may be discarded.
