| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a radio communication method for realizing more effective communication by using both carrier detection and correlation detection. SOLUTION: When carrier detection and correlation detection are executed in this method, four combinations from No.1 to No.4 exist in the size relation of respective thresholds of a carrier level and a correlation value. The propriety of transmission by a pattern A is judged and data transmission is stopped only in the case of No.1. Data is transmitted in the cases of No.2-4. Namely, data is transmitted when the carrier level or the correlation value is not more than the threshold. When communication is not realized even if the number of transmission times exceeds one that is previously set, a system is switched to the judgment of transmission property by a pattern B, data is transmitted only in the case of No.4, and in the cases of No.1-3, data transmission is stopped. Namely, data is transmitted only when the carrier level and the correlation value are both not more than the threshold.</p> |
