| 摘要 |
PROBLEM TO BE SOLVED: To suppress spreading of spectrum in a transmission base band signal upon change of a gain factor in a CDMA modulating method and a CDMA modulating apparatus for applying a weight to at least one of an in-phase signal and an orthogonal channel signal by a gain factor to diffuse modulating a complex QPS. SOLUTION: A gain factor controller 67 is configured to comprise a gain factor signal generator for generating a gain factor signal, and a low-pass filter for changing a gain factor signal generated by the gain factor generator in a lamp manner. In multipliers 61, 62, a gain factor signal G, after passing the low-pass filter of the gain factor controller 67, is applied for weighting. |
