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1. (WO2018014815) MULTICARRIER SYSTEM AND DATA MODULATION AND DEMODULATION METHOD AND DEVICE FOR MULTICARRIER SYSTEM

Pub. No.:    WO/2018/014815    International Application No.:    PCT/CN2017/093227
Publication Date: Fri Jan 26 00:59:59 CET 2018 International Filing Date: Tue Jul 18 01:59:59 CEST 2017
IPC: H04L 27/26
Applicants: ZTE CORPORATION
中兴通讯股份有限公司
Inventors: XIN, Yu
辛雨
Title: MULTICARRIER SYSTEM AND DATA MODULATION AND DEMODULATION METHOD AND DEVICE FOR MULTICARRIER SYSTEM
Abstract:
Provided are a multicarrier system and a data modulation and demodulation method and device for a multicarrier system. The method comprises: respectively performing cyclic shift on L continuous symbols of a data sequence, where L ≥ 2; and using a specified waveform function to perform modulation on the cyclic shifted data sequence, wherein a length of an independent variable interval of the waveform function is greater than or equal to a symbol interval for the L modulated symbols. The above technical solution solves a technical problem in which prior art techniques are unable to be compatible with an LTE system while effectively suppressing out-of-band leakage and flexibly adjusting a symbol interval to adapt to different channel environments, and exhibit poor demodulation performance. The invention realizes effective suppression of out-of-band leakage, has higher compatibility with an LTE system, and performs a simple cyclic shift operation to improve demodulation performance and flexibility of adjusting a symbol interval.