| 摘要 |
PROBLEM TO BE SOLVED: To provide a system having solved a problem, wherein since respective spread signals output by a spreading system is based on two or more data signals, when using such a spreading system, several separation processes of the data signals must be performed before spreading, but the complexity of the spreading system is increased, when a separation processing operation increases the complexity of the data signal, and a desired operation cannot be attained. SOLUTION: A spreading system spreads two data signals. The system produces a filtered signal, based on one of the data signals and an output signal that is based on both of the data signals. In one example, a spreading system is used to perform QPSK spreading of two data signals, the QPSK spreading actually including separation processing of the two data signals. Such a separation control can include a filtering and/or a gain control. COPYRIGHT: (C)2011,JPO&INPIT |
