Waveform design for sequential MIMO detection

In this paper, a sequential multiple-input, multiple-output detection problem is considered. Minimization of the weighted average of the Kullback-Leibler divergences between the densities of the observations under the two hypotheses (which permits to control the average sample number under the two hypotheses) is pursued when the transmitted energy budget is limited. A closed form expression of the structure of the optimum code matrix is found, and a simple numerical algorithm to find the optimal power allocation is given.