Title:
データ伝送方法、データ受信方法、データ変調装置及びデータ復調装置
Document Type and Number:
Japanese Patent JP5660396
Kind Code:
B2
Abstract:
By using circularly-arranged signal points obtained by rearranging a part of signal points arranged in a rectangular shape or a cross shape, average signal power and peak signal energy are reduced to improve nonlinear distortion characteristics. Provided is a bit mapping method in which an average value of a Hamming distance in terms of a specified lower bit portion between adjacent signal points is small, and a Euclidean distance between signal points at which the lower bit portions assigned thereto coincide with each other becomes maximum. By applying error correction code only to the lower bit portion, a data transmission method excellent in bit error rate characteristics is provided while suppressing a band expansion rate.
Inventors:
神谷 典史
佐々木 英作
佐々木 英作
Application Number:
JP2011544264A
Publication Date:
January 28, 2015
Filing Date:
December 01, 2010
Export Citation:
Assignee:
日本電気株式会社
International Classes:
H04L27/00; H03M13/25; H04L27/34
Domestic Patent References:
| JP2002190756A | 2002-07-05 | |||
| JPH1117759A | 1999-01-22 | |||
| JP2000069103A | 2000-03-03 | |||
| JP2002190756A | 2002-07-05 | |||
| JPH1117759A | 1999-01-22 | |||
| JP2000069103A | 2000-03-03 |
Foreign References:
| WO2007046558A1 | 2007-04-26 | |||
| WO2007046558A1 | 2007-04-26 |
Other References:
JPN6014023658; Ｈ． Ｉｍａｉ ｅｔ ａｌ．: 'Ａ ｎｅｗ ｍｕｌｔｉｌｅｖｅｌ ｃｏｄｉｎｇ ｍｅｔｈｏｄ ｕｓｉｎｇ ｅｒｒｏｒ-ｃｏｒｒｅｃｔｉｎｇ ｃｏｄｅｓ' ＩＥＥＥ Ｔｒａｎｓａｃｔｉｏｎｓ ｏｎ Ｉｎｆｏｒｍａｔｉｏｎ Ｔｈｅｏｒｙ Ｖｏｌｕｍｅ ２３， Ｉｓｓｕｅ ３, 1977, Ｐａｇｅｓ ３７１ - ３７７
JPN6014023659; Ｅ． Ｅｌｅｆｔｈｅｒｉｏｕ ｅｔ ａｌ．: 'Ｌｏｗ-ｄｅｎｓｉｔｙ ｐａｒｉｔｙ-ｃｈｅｃｋ ｃｏｄｅｓ ｆｏｒ ｄｉｇｉｔａｌ ｓｕｂｓｃｒｉｂｅｒ ｌｉｎｅｓ' ２００２ ＩＥＥＥ Ｉｎｔｅｒｎａｔｉｏｎａｌ Ｃｏｎｆｅｒｅｎｃｅ ｏｎ Ｃｏｍｍｕｎｉｃａｔｉｏｎｓ Ｖｏｌ． ３, 2002, Ｐａｇｅｓ １７５２ - １７５７
JPN6014023658; Ｈ． Ｉｍａｉ ｅｔ ａｌ．: 'Ａ ｎｅｗ ｍｕｌｔｉｌｅｖｅｌ ｃｏｄｉｎｇ ｍｅｔｈｏｄ ｕｓｉｎｇ ｅｒｒｏｒ-ｃｏｒｒｅｃｔｉｎｇ ｃｏｄｅｓ' ＩＥＥＥ Ｔｒａｎｓａｃｔｉｏｎｓ ｏｎ Ｉｎｆｏｒｍａｔｉｏｎ Ｔｈｅｏｒｙ Ｖｏｌｕｍｅ ２３， Ｉｓｓｕｅ ３, 1977, Ｐａｇｅｓ ３７１ - ３７７
JPN6014023659; Ｅ． Ｅｌｅｆｔｈｅｒｉｏｕ ｅｔ ａｌ．: 'Ｌｏｗ-ｄｅｎｓｉｔｙ ｐａｒｉｔｙ-ｃｈｅｃｋ ｃｏｄｅｓ ｆｏｒ ｄｉｇｉｔａｌ ｓｕｂｓｃｒｉｂｅｒ ｌｉｎｅｓ' ２００２ ＩＥＥＥ Ｉｎｔｅｒｎａｔｉｏｎａｌ Ｃｏｎｆｅｒｅｎｃｅ ｏｎ Ｃｏｍｍｕｎｉｃａｔｉｏｎｓ Ｖｏｌ． ３, 2002, Ｐａｇｅｓ １７５２ - １７５７
JPN6014023659; Ｅ． Ｅｌｅｆｔｈｅｒｉｏｕ ｅｔ ａｌ．: 'Ｌｏｗ-ｄｅｎｓｉｔｙ ｐａｒｉｔｙ-ｃｈｅｃｋ ｃｏｄｅｓ ｆｏｒ ｄｉｇｉｔａｌ ｓｕｂｓｃｒｉｂｅｒ ｌｉｎｅｓ' ２００２ ＩＥＥＥ Ｉｎｔｅｒｎａｔｉｏｎａｌ Ｃｏｎｆｅｒｅｎｃｅ ｏｎ Ｃｏｍｍｕｎｉｃａｔｉｏｎｓ Ｖｏｌ． ３, 2002, Ｐａｇｅｓ １７５２ - １７５７
JPN6014023658; Ｈ． Ｉｍａｉ ｅｔ ａｌ．: 'Ａ ｎｅｗ ｍｕｌｔｉｌｅｖｅｌ ｃｏｄｉｎｇ ｍｅｔｈｏｄ ｕｓｉｎｇ ｅｒｒｏｒ-ｃｏｒｒｅｃｔｉｎｇ ｃｏｄｅｓ' ＩＥＥＥ Ｔｒａｎｓａｃｔｉｏｎｓ ｏｎ Ｉｎｆｏｒｍａｔｉｏｎ Ｔｈｅｏｒｙ Ｖｏｌｕｍｅ ２３， Ｉｓｓｕｅ ３, 1977, Ｐａｇｅｓ ３７１ - ３７７
JPN6014023659; Ｅ． Ｅｌｅｆｔｈｅｒｉｏｕ ｅｔ ａｌ．: 'Ｌｏｗ-ｄｅｎｓｉｔｙ ｐａｒｉｔｙ-ｃｈｅｃｋ ｃｏｄｅｓ ｆｏｒ ｄｉｇｉｔａｌ ｓｕｂｓｃｒｉｂｅｒ ｌｉｎｅｓ' ２００２ ＩＥＥＥ Ｉｎｔｅｒｎａｔｉｏｎａｌ Ｃｏｎｆｅｒｅｎｃｅ ｏｎ Ｃｏｍｍｕｎｉｃａｔｉｏｎｓ Ｖｏｌ． ３, 2002, Ｐａｇｅｓ １７５２ - １７５７
Attorney, Agent or Firm:
Michio Nagai
Masao Sekiguchi
Nakano Takashi -- elegant
Masao Sekiguchi
Nakano Takashi -- elegant