We investigated a phase-coded multiple-input
multiple-output (MIMO) radar approach which uses concatenated
codes based on Hadamard matrices and almost-perfect
autocorrelation sequences (APASs). Due to the structure of
concatenated codes, the correlators can be implemented with a
small number of taps compared to the overall sequence length.
However, this type of sequence set has some limitations, which
we address in this contribution. Based on numerical simulations
and measurements, which we carried out using a software-defined
radar (SDR) platform with 16 MIMO channels at 77 GHz, we
point out how these issues can be managed.
Forschungs-