Title:
DATA MODULATION AND DEMODULATION METHODS, AND DATA MODULATION AND DEMODULATION DEVICES
Document Type and Number:
WIPO Patent Application WO/2017/121414
Kind Code:
A1
Abstract:
Provided are data modulation and demodulation methods for a multi-carrier system, a frame generation method and a node. A transmitting node performs an inverse fast Fourier transform (IFFT) on frequency domain data of L consecutive symbols, the inverse of the adjacent sub-carrier spacing of the frequency domain data being T0, L≥2. The transmitting node uses a specified waveform function to perform modulation on time domain data sequences of the L consecutive symbols after IFFT processing, the symbol spacing of the L symbols after modulation being T1, T1>T0, the independent variable interval length of the waveform function being N×T1, N being a real number greater than or equal to 2 or greater than or equal to 3. Also provided are a corresponding demodulation method, frame generation method and node. The present invention is better able to suppress out-of-band leakage, and maintains compatibility with LTE as much as possible. Furthermore, the present invention has better demodulation performance at a receiving end.
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Inventors:
XIN YU (CN)
YU GUANGHUI (CN)
YUAN ZHIFENG (CN)
YU GUANGHUI (CN)
YUAN ZHIFENG (CN)
Application Number:
PCT/CN2017/074569
Publication Date:
July 20, 2017
Filing Date:
February 23, 2017
Export Citation:
Assignee:
ZTE CORP (CN)
International Classes:
H04L27/26
Foreign References:
| CN104823402A | 2015-08-05 | |||
| CN104954299A | 2015-09-30 | |||
| US8731079B2 | 2014-05-20 |
Other References:
ZHANG: "Design of Farrow Structure Filter Based Sample rate Conversion in Software Radio", GUANGXI COMMUNICATION TECHNOLOGY, no. 1, 15 March 2007 (2007-03-15), pages 29 - 32
Attorney, Agent or Firm:
AFD CHINA INTELLECTUAL PROPERTY LAW OFFICE (CN)
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