Nokia Shanghai Bell Co., Ltd

Song, Yong

Yong Song

Wei Zhang

Kun Zhao

Zhenhao Cai

The objective of the present invention is to provide a method and apparatus for reducing PAR of beamforming output signals. A method for reducing PAR of beamforming output signals, wherein input base band data is for N ports and number of beamforming output pipes is M; wherein the method comprises the following steps: building a correlation matrix of the input base band data of the N ports; determining adjusting weight vector for the input data of each port in time domain based on the correlation matrix and wbeing the beamforming weight vector of the total N beams for the k-th output pipe, to minimize the correlation of the input base band data of the N ports; adjusting the phase of the input data of each port in time domain based on the adjusting weight vector before beamforming. The present invention enables a reduction on PAR of the beamforming output signals and then improves LTE and 5G power control performance.

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Shanghai, China

Yong Song