Patent ID: 11929861
Assignee: RDA MICROELECTRONICS (BEIJING) CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method for transmitting a signal, comprising:
determining a plurality of baseband signals of Component Carriers (CC);
selecting a plurality of phase rotation factors, the plurality of phase rotation factors being in a one-to-one correspondence with the plurality of baseband signals of CC, and recording a number of times of selection by adding one each time of selection;
determining a candidate signal and a Peak to Average Power Ratio (PAPR) of the candidate signal based on the plurality of phase rotation factors and the plurality of baseband signals of CCs, wherein in response to the PAPR being greater than or equal to a preset threshold and the number of times of selection not reaching a preset number of times, the determining the candidate signal and the PAPR of the candidate signal comprises: reselecting phase rotation factors and re-determining another candidate signal and a PAPR of the another candidate signal, until the PAPR of the another candidate signal is less than the preset threshold or the number of times of selection reaches the preset number of times; and
transmitting the candidate signal or the another candidate signal;
wherein said determining the candidate signal and the PAPR of the candidate signal based on the plurality of phase rotation factors and the plurality of baseband signals of CCs comprises:
up-sampling and shifting each baseband signal of CC to a corresponding baseband frequency of carrier aggregation, and obtaining a plurality of carrier signals by multiplying the plurality of baseband signals of CC which are up-sampled and shifted by selected phase rotation factors, respectively; and
obtaining the candidate signal by adding the plurality of carrier signals, and determining the PAPR of the candidate signal.