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1. (WO2017059719) DATA TRANSMISSION METHOD AND DEVICE

Pub. No.:    WO/2017/059719    International Application No.:    PCT/CN2016/090647
Publication Date: Fri Apr 14 01:59:59 CEST 2017 International Filing Date: Thu Jul 21 01:59:59 CEST 2016
IPC: H04L 27/26
Applicants: HUAWEI TECHNOLOGIES CO., LTD.
华为技术有限公司
Inventors: WU, Tao
吴涛
Title: DATA TRANSMISSION METHOD AND DEVICE
Abstract:
Provided are a data transmission method and device for a wireless local area network. The method comprises: dividing a data group, to be transmitted via a signal carrier, in a data block (BLK) of an initial physical layer protocol data unit (PPDU) into L initial sub-blocks, wherein the BLK comprises the data group and a guard interval (GI); determining a phase rotation signal of each initial sub-block in the L initial sub-blocks; multiplying a data symbol of each initial sub-block by the phase rotation signal of each initial sub-block to obtain a target sub-block of each initial sub-block; combining target sub-blocks of the L initial sub-blocks and the GI to obtain a target BLK, wherein a peak-to-average ratio of frequency domain data of the target BLK after being converted to a frequency domain is less than a peak-to-average ratio of frequency domain data of the BLK after being converted to the frequency domain; and generating a target PPDU according to the target BLK and sending the target PPDU. The embodiments of the present invention can improve the accuracy of data transmission and the performance of a system.