Fig. 6From: Using tensor contractions to derive the structure of slice-wise multiplications of tensors with applications to space–time Khatri–Rao coding for MIMO-OFDM systemsSER for a \(2\times 2\) cross-coded OFDM system with parameters \(N=128\), \(Q=2\), K, \(\Delta K\), \(\Delta F\), and the symbols are drawn from a 4-QAM modulation. The parameters K, \(\Delta K\) and \(\Delta F\) are indicated in the legendBack to article page