WIRELESS COMMUNICATION DEVICE AND WIRELESS COMMUNICATION SYSTEM

摘要

Provided is a wireless communication device which can improve the usage rate of resources in multi-stage relay communication, reduce the delays of the relay signals, and improve the reception quality in the relay stations and the base stations. A transmission decision unit (16) determines whether there is an error in the relay signal, whether the relay signal will be transmitted based on the ACK/NACK received from one hop downstream, and whether an ACK/NACK will be transmitted. In addition, a modulation coding scheme (MCS) decision unit (17) in the transmission decision unit (16) determines the MCS of the relay signal. The transmission indication generated in the transmission decision unit (16) is output to a buffer (11) and an ACK/NACK generator (19). In addition, the MCS, which was determined, is output to an error correction encoder (12) and a modulator (13). The ACK/NACK generator (19) generates ACK if there was no error in the relay signal, and generates NACK if there was an error.