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1. (WO2017148304) PILOT FREQUENCY SEQUENCE SENDING METHOD AND APPARATUS

Pub. No.:    WO/2017/148304    International Application No.:    PCT/CN2017/074256
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Wed Feb 22 00:59:59 CET 2017
IPC: H04L 27/26
H04L 27/34
Applicants: HUAWEI TECHNOLOGIES CO., LTD.
华为技术有限公司
Inventors: XUE, Xin
薛鑫
CAO, Ju
曹粔
LIU, Le
刘乐
WANG, Ningjuan
王宁娟
LIN, Wei
林伟
Title: PILOT FREQUENCY SEQUENCE SENDING METHOD AND APPARATUS
Abstract:
A pilot frequency sequence sending method and apparatus. In the present application, after a pilot frequency sequence is masked for the first time according to a cyclic orthogonal matrix, the pilot frequency sequence masked for the first time is masked again, so that the PAPR of the pilot frequency sequence masked again is lower than the PAPR of the pilot frequency sequence not masked again, and furthermore, the orthogonality of the pilot frequency sequence masked again is better than the orthogonality of the pilot frequency sequence not masked again, thereby ensuring the accuracy of channel estimation and frequency offset detection.