Title:
WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION DEVICE, TRANSMITTING DEVICE, AND RECEIVING DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/170443
Kind Code:
A1
Abstract:
A wireless communication system (1) comprising a transmitting device (100) and a receiving device (200). The transmitting device (100) includes: a coding unit which generates a first bit string by performing convolutional coding on information bits on the basis of a coding rate; a bit erasing unit which erases one or more bits from the first bit string for every predetermined first number of bits and generates a second bit string; and a modulation unit which generates a symbol by modulating the second bit string. The receiving device (200) includes: a demodulation unit which calculates a plurality of first reliabilities that are reliabilities of a plurality of bit strings that the symbol can take; a likelihood extension unit which generates a plurality of second reliabilities by generating a plurality of extended bit strings that are bit strings composed of a first number of bits, and assigning a plurality of duplicated first reliabilities to the reliabilities of the plurality of extended bit strings; and a decoding unit which creates a trellis diagram using the code rate and the plurality of extended bit strings, and respectively assigns the plurality of second reliabilities to a plurality of branches in the trellis diagram.
Inventors:
HIGASHINAKA MASATSUGU (JP)
Application Number:
PCT/JP2019/006879
Publication Date:
August 27, 2020
Filing Date:
February 22, 2019
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H03M13/41; H03M13/23; H03M13/45
Foreign References:
| JP2004289353A | 2004-10-14 | |||
| JP2012182559A | 2012-09-20 | |||
| JP5586504B2 | 2014-09-10 |
Other References:
"Data coding technology and error correction basics, [Revised new edition]", 1 August 2010, CQ PUBLISHING CO., LTD., JP, ISBN: 978-4-7898-4640-0, article NISHIMURA, YOSHIKAZU: "Passage; Data coding technology and error correction basics [Chapter 9: Convolutional code]", pages: 139 - 172, XP009529608
HIGASHINAKA, MASATSUGU; OHASHI, AKINORI; SANO, HIROYASU; OKAMURA, ATSUSHI: "Soft Decision Generation Method in Single Carrier Block Transmission Using Both Frequency Modulation and Phase Modulation", PROCEEDINGS OF THE 2017 IEICE GENERAL CONFERENCE, 7 March 2017 (2017-03-07), JP, pages 380, XP009529607
HIGASHINAKA, MASATSUGU; OHASHI, AKINORI; SANO, HIROYASU; OKAMURA, ATSUSHI: "Soft Decision Generation Method in Single Carrier Block Transmission Using Both Frequency Modulation and Phase Modulation", PROCEEDINGS OF THE 2017 IEICE GENERAL CONFERENCE, 7 March 2017 (2017-03-07), JP, pages 380, XP009529607
Attorney, Agent or Firm:
TAKAMURA, Jun (JP)
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