Decision apparatus and program for determining the combination of modulation method and propagation mode number applied to channel

摘要

To provide a determination device which determines a combination of a modulation method with the number of propagation modes, which suppresses an influence of crosstalk and the increase of unavailable frequency slots.SOLUTION: The determination device includes determination means which determines, for each of an available first modulation method from to an N-th modulation method, M band widths in total when the number of propagation modes for channel use is changed from 1 to M. The determination device selects one band width from each of the total M band widths respectively obtained for the first to the N-th modulation methods, to obtain MN groups in total each including N band widths associated with the first the N-th modulation methods. The determination device then determines, among the MN groups in total, a group having the smallest total difference from the maximum value of the band width included in the group, to determine the number of propagation modes corresponding to a band width associated with an n-th modulation method (n is an integer from 1 to N) included in the determined group, as the number of propagation modes for the n-th modulation method.SELECTED DRAWING: Figure 6