Abstract: A wireless receiving device includes a signal measurement unit that measures received signals; a weighting factor generation unit that generates weighting factors each for suppression of the received signals, based on measurement results of the received signals; interference suppression units that each perform, in a parallel manner, interference suppression processing on the received signals, using one of the weighting factors, the one weighting factor used by one of the interference suppression units being different from weighting factors used by other interference suppression units, the plurality of weighting factors being generated at different points of time; arrival detection units that are connected in one-to-one to the interference suppression units, the arrival detection units each detecting arrival of a desired signal, using received signals that have been subjected to the interference suppression processing in the corresponding interference suppression unit connected thereto; an arrival determinatio

Abstract: An antenna control device controls a plurality of antennas used for communicating with a mobile station that moves along a predetermined path in a radio communication system that includes a plurality of linear cells, each of which is formed by the antennas and in each of which each of the antennas sets a directionality in a same direction as a path of the mobile station and transmits an identical signal at an identical frequency, and that has two frequencies recurrently allocated in such a manner that adjacent linear cells use different frequencies for transmission. The antenna control device adjusts, in each of the linear cells, power distribution to each of the antennas that form the linear cell so as to be gradually decreased with distance in a direction of antenna directionality of each of the antennas.

Abstract: In a DSTBC system, to obtain a communication system capable of estimating a transmission path without reducing a transmission capacity. The communication system includes a transmission device and a reception device that perform communication in the DSTBC system, in which the transmission device performs, as a start symbol of DSTBC, the start symbol including known signals one of which has signal power and the other of which are set to signal power of zero and transmits the known signals to the reception device, and the reception device independently estimates a transmission path between each of transmitting antennas of the transmission device and a receiving antenna of the reception device itself by using the space-time coded start symbol received from the transmission device, and decodes a reception signal with DSTBC decoding employing synchronous detection.