Efficient Offline Waveform Design Using Quincunx/Hexagonal Time-Frequency Lattices

Figure 2

Illustration of the calculation of the useful and interference Kernels. (The pink squares of “even” and “odd” infinite Kernels do not overlap with the selection window and therefore do not contribute to the determination of the infinite Kernel.)

(a) Useful Kernel

(b) “Even” infinite Kernel

(c) “Odd” infinite Kernel