| 摘要 |
A wireless communication system has a transmitter and a receiver. The transmitter has a multiplexing unit (3) for generating a multiplexed signal which is a combination of a processed signal and a data signal; a transmitting unit (1, 2) for transmitting the multiplexed signal; and a processing unit (4, 6, 8, 9) connected for receiving said data signal and a first signal (P1) known to the receiver. The processing unit generates, in dependence on the data signal, a second signal (P2) having a selected relationship with the first signal (P1), and also generates the processed signal based on the first and second signals. The relationship is selected from a plurality of permitted relationships so that a peak-to-average power ratio reduction is obtained when the multiplexed signal combining the processed signal and the data signal is transmitted by the transmitting unit. The receiver receives the transmitted signal and separates out therefrom the data signal and the first and second signals (P1, P2). The receiver employs the first signal, together with knowledge of the plurality of permitted relationships, to generate an adjusted second signal representing the first signal if subjected to the channel conditions that affected the second signal. The received data signal is adjusted in dependence on the received first signal and on the adjusted second signal so as to compensate for the effects of the channel conditions on said data signal. |
