地上デジタルテレビジョン放送におけるマルチパスの到来方向推定精度向上のための一検討

概要

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In this paper, DoA(direction of arrival) in a measurement system that estimates the conditions of propagation paths for digital terrestrial television broadcasting is used. The broadcasting signals are received by two different antennas that have different roles. One is used for receiving the reference signal to obtain the synchronization timing. The other antenna is rotated in a horizontal surface to estimate the DoA. By analyzing of the received datas, a phase compensation technique and delay profile synchronization technique are proposed. The delay profiles that are measured against each measurement angle are synchronized to the reference delay profile using the evaluation function and Newton method. The evaluation function is defined as the square error of reference and target delay profile. The directions of arrival of the paths are estimated from the synchronized delay profiles. It is possible to synchronize delay profiles using the proposed scheme.