| 摘要 |
In a radio broadcast system constituted by a base station and a plurality of subsidiary stations located at various portions around the base station, each subsidiary station includes a detection unit for detecting an error in received data, and a unit for transmitting a burst retransmission request signal (NAK signal) upon detecting an error in the received data, and transmits no signals for a predetermined limited time, except the NAK signal for indicating reception of broadcast data containing an error. The base station either detects the NAK signal within the limited time or regards detection of a radio carrier having a predetermined time length as detection of the NAK signal.
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