JP5235629B2 - 無線通信装置の符号化及び変調方法、並びに復号方法 - Google Patents
無線通信装置の符号化及び変調方法、並びに復号方法 Download PDFInfo
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- JP5235629B2 JP5235629B2 JP2008303429A JP2008303429A JP5235629B2 JP 5235629 B2 JP5235629 B2 JP 5235629B2 JP 2008303429 A JP2008303429 A JP 2008303429A JP 2008303429 A JP2008303429 A JP 2008303429A JP 5235629 B2 JP5235629 B2 JP 5235629B2
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- 238000000034 method Methods 0.000 title description 84
- 238000004891 communication Methods 0.000 title description 29
- 238000013507 mapping Methods 0.000 claims description 64
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- 230000005540 biological transmission Effects 0.000 description 24
- 238000004364 calculation method Methods 0.000 description 14
- 230000000875 corresponding effect Effects 0.000 description 11
- 230000003252 repetitive effect Effects 0.000 description 11
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0071—Use of interleaving
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/25—Error detection or forward error correction by signal space coding, i.e. adding redundancy in the signal constellation, e.g. Trellis Coded Modulation [TCM]
- H03M13/255—Error detection or forward error correction by signal space coding, i.e. adding redundancy in the signal constellation, e.g. Trellis Coded Modulation [TCM] with Low Density Parity Check [LDPC] codes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0057—Block codes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
- H04L27/3405—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power
- H04L27/3416—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power in which the information is carried by both the individual signal points and the subset to which the individual points belong, e.g. using coset coding, lattice coding, or related schemes
- H04L27/3427—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power in which the information is carried by both the individual signal points and the subset to which the individual points belong, e.g. using coset coding, lattice coding, or related schemes in which the constellation is the n - fold Cartesian product of a single underlying two-dimensional constellation
- H04L27/3433—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power in which the information is carried by both the individual signal points and the subset to which the individual points belong, e.g. using coset coding, lattice coding, or related schemes in which the constellation is the n - fold Cartesian product of a single underlying two-dimensional constellation using an underlying square constellation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Probability & Statistics with Applications (AREA)
- Theoretical Computer Science (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Error Detection And Correction (AREA)
Description
(1)符号語ビットの少なくとも1ビットは、ビット数を削減するための他のビットと演算することなくそのまま変調を行う。図3の例では、16QAM(l=8)のビット”d7”、 64QAM(l=12)のビット”d11”等がこれに該当する。
(2)削減ビットはそれぞれ異なるインタリーブされた符号語の演算によって得る。図3(a)では、d0〜d2のビットはm0にのみ、d3〜d4のビットはm1にのみ、d5〜d6のビットはm2にのみ、d7のビットはm3にのみ用いられ、各インタリーブされた符号語の同じビットが複数の削減ビットを得るための演算に用いられることはない。
Claims (6)
- BICM-IDを行う機能を有する受信機に対して信号を送信する送信機であって、
第1ビット列を繰り返し符号化する符号化器と、
上記符号化器から出力される符号語をインタリーブするインタリーバと、
上記インタリーバから出力される第2ビット列を変調してシンボルに変換する変調器とを有し、
上記変調器は、上記第2ビット列のビット数を削減した第3ビット列を上記シンボルにマッピングし、
上記第3ビット列は、上記第2ビット列の1ビットのみから生成される少なくとも1の第1ビットと、上記第2ビット列の複数ビットを演算して生成される第2ビット群を有する送信機。 - 請求項1において、
上記第3ビット列のある1ビットの生成に用いられる第2ビット列のビットは、上記第3ビット列の他のビットの生成に用いられることはないことを特徴とする送信機。 - 請求項1において、
上記第3ビット列を上記シンボルにマッピングする場合に非Grayマッピング方式を用いることを特徴とする送信機。 - 請求項1において、
上記符号化器は、互いに繰り返し数の異なる複数のビット複製器を有し、
上記符号化器は、上記複数のビット複製器を所定の比率で用いて上記第1ビット列の繰り返し符号化を行うことを特徴とする送信機。 - 請求項1において、
上記第1ビット列は、情報ビットとパリティビットとを含むことを特徴とする送信機。 - 請求項1において、
上記インタリーバは、上記符号語のビットの順序及び極性を乱数的に入れ替えることを特徴とする送信機。
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JP2008303429A JP5235629B2 (ja) | 2008-11-28 | 2008-11-28 | 無線通信装置の符号化及び変調方法、並びに復号方法 |
US12/625,605 US8291287B2 (en) | 2008-11-28 | 2009-11-25 | Encoding and modulating method, and decoding method for wireless communication apparatus |
CN200910225096.0A CN101753268B (zh) | 2008-11-28 | 2009-11-26 | 一种发送机及接收机 |
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JP2008303429A JP5235629B2 (ja) | 2008-11-28 | 2008-11-28 | 無線通信装置の符号化及び変調方法、並びに復号方法 |
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JP2013006836A Division JP5521063B2 (ja) | 2013-01-18 | 2013-01-18 | 無線通信装置の符号化及び変調方法、並びに復号方法 |
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JP2010130397A JP2010130397A (ja) | 2010-06-10 |
JP2010130397A5 JP2010130397A5 (ja) | 2012-01-05 |
JP5235629B2 true JP5235629B2 (ja) | 2013-07-10 |
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JP2008303429A Expired - Fee Related JP5235629B2 (ja) | 2008-11-28 | 2008-11-28 | 無線通信装置の符号化及び変調方法、並びに復号方法 |
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US (1) | US8291287B2 (ja) |
JP (1) | JP5235629B2 (ja) |
CN (1) | CN101753268B (ja) |
Cited By (1)
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DE112020001383T5 (de) | 2019-03-20 | 2021-12-02 | Musashi Seimitsu Industry Co., Ltd. | Hohlwelle |
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JP5721486B2 (ja) | 2011-03-18 | 2015-05-20 | 株式会社日立国際電気 | 通信機 |
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JP5758817B2 (ja) * | 2012-02-14 | 2015-08-05 | 株式会社日立国際電気 | 受信機及び受信信号の復号方法 |
KR20130142932A (ko) * | 2012-06-19 | 2013-12-30 | 한국전자통신연구원 | 무선랜 시스템의 오에프디엠 전송 방법 및 장치 |
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US9602135B2 (en) * | 2014-02-20 | 2017-03-21 | Electronics And Telecommunications Research Institute | Bit interleaver for low-density parity check codeword having length of 64800 and code rate of 5/15 and 64-symbol mapping, and bit interleaving method using same |
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2008
- 2008-11-28 JP JP2008303429A patent/JP5235629B2/ja not_active Expired - Fee Related
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2009
- 2009-11-25 US US12/625,605 patent/US8291287B2/en not_active Expired - Fee Related
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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DE112020001383T5 (de) | 2019-03-20 | 2021-12-02 | Musashi Seimitsu Industry Co., Ltd. | Hohlwelle |
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US8291287B2 (en) | 2012-10-16 |
CN101753268B (zh) | 2013-08-28 |
JP2010130397A (ja) | 2010-06-10 |
US20100146365A1 (en) | 2010-06-10 |
CN101753268A (zh) | 2010-06-23 |
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