| 摘要 |
A portable terminal device is provided with a wireless communication unit, which performs wireless communication via a base station using a TDMA/TDD system; a frame-error monitoring unit, which monitors a presence or absence of the frame error in respective consecutive frames composed of a plurality of time slots; a storage unit, which stores the presence or absence frame errors as a frame error array; a calculation unit, which calculates a degree of similarity between the frame error array and each of delayed frame error arrays obtained by delaying the frame error array by every one frame; an determining unit, which determines whether periodic frame errors are present, based on the degree of similarity; and an interference avoiding unit, which performs a procedure for the periodic frame errors in a case where it is determined that the periodic frame errors are present.
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