Title:
TRANSMITTER USING SYMBOL CONSTELLATION ROTATION AND SPECTRUM SHAPING, TRANSMISSION METHOD THEREOF, RECEIVER AND RECEPTION METHOD THEREOF IN COMMUNICATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2022/092538
Kind Code:
A1
Abstract:
Provided are a DFT-spread OFDM transmitter and transmission method, and a DFT-spread OFDM receiver and reception method which can receive signals transmitted thereby. The DFT-spread OFDM transmitter comprises: a constellation rotation unit in which a constellation rotation angle and a frequency domain spectrum shaping vector are designed so that a PAPR can be easily traded off with frequency efficiency even without inter-symbol interference, and which constellation-rotates a symbol vector including M PAM symbols by a constellation rotation angle to generate a constellation-rotated symbol vector; a pruned DFT-spread unit which uses a pruned DFT matrix to spread the constellation-rotated symbol vector, thereby generating a pruned DFT-spread vector; a frequency domain spectrum shaping unit which Hadamard-multiplies the pruned DFT-spread vector by a shaping vector, thereby generating a frequency domain spectrum-shaped vector; and a subcarrier allocation unit which allocates the frequency domain spectrum-shaped vector to a subcarrier in an allocated frequency range.
Inventors:
CHO JOON HO (KR)
CHOI JEONG HOON (KR)
CHOI JEONG HOON (KR)
Application Number:
PCT/KR2021/011793
Publication Date:
May 05, 2022
Filing Date:
September 01, 2021
Export Citation:
Assignee:
SAMSUNG ELECTRONICS CO LTD (KR)
International Classes:
H04L27/34; H04L25/03; H04L25/49; H04L27/26
Foreign References:
| KR20200058044A | 2020-05-27 | |||
| US20180054332A1 | 2018-02-22 | |||
| KR20160091286A | 2016-08-02 | |||
| KR20170053076A | 2017-05-15 | |||
| US9967125B2 | 2018-05-08 |
Attorney, Agent or Firm:
Y.P. LEE, MOCK & PARTNERS (KR)
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