| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce a reception error rate in a reception environment wherein interference signals are present. <P>SOLUTION: A transmission control part calculates a superposition rate on the basis of interference band information and selects an encoding rate and a modulation system according to the calculated superposition rate. Thus, when the superposition rate is low, transmission and reception by the high encoding rate and the modulation system of a high modulation multi-value are performed and a high communication speed is achieved. When the superposition rate is high, transmission and reception by the low encoding rate and the modulation system of a low modulation multi-value are performed according to the high superposition rate, resistance to interference is improved and communication quality is maintained. <P>COPYRIGHT: (C)2010,JPO&INPIT |
