JP4478668B2 - 並列のターボ復号機中でのインターリーブの方法およびシステム。 - Google Patents
並列のターボ復号機中でのインターリーブの方法およびシステム。 Download PDFInfo
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- JP4478668B2 JP4478668B2 JP2006200177A JP2006200177A JP4478668B2 JP 4478668 B2 JP4478668 B2 JP 4478668B2 JP 2006200177 A JP2006200177 A JP 2006200177A JP 2006200177 A JP2006200177 A JP 2006200177A JP 4478668 B2 JP4478668 B2 JP 4478668B2
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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
- H03M13/29—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 combining two or more codes or code structures, e.g. product codes, generalised product codes, concatenated codes, inner and outer codes
- H03M13/2957—Turbo codes and decoding
-
- 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
- H03M13/27—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 using interleaving techniques
- H03M13/2771—Internal interleaver for turbo codes
-
- 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
- H03M13/37—Decoding methods or techniques, not specific to the particular type of coding provided for in groups H03M13/03 - H03M13/35
- H03M13/39—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes
- H03M13/3905—Maximum a posteriori probability [MAP] decoding or approximations thereof based on trellis or lattice decoding, e.g. forward-backward algorithm, log-MAP decoding, max-log-MAP decoding
-
- 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
- H03M13/37—Decoding methods or techniques, not specific to the particular type of coding provided for in groups H03M13/03 - H03M13/35
- H03M13/39—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes
- H03M13/3972—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes using sliding window techniques or parallel windows
-
- 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
- H03M13/65—Purpose and implementation aspects
- H03M13/6561—Parallelized implementations
-
- 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
- H03M13/65—Purpose and implementation aspects
- H03M13/6563—Implementations using multi-port memories
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- Probability & Statistics with Applications (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Error Detection And Correction (AREA)
- Memory System (AREA)
Description
入力バッファコントローラ425は入力バッファ440,445を制御して、サブ復号機405、410、415のそれぞれへ入力LLRを伝送する。ベータ初期化子430は後半部の後進経路メトリクスを計算する。最後に、出力バッファコントローラ435は並列ターボ復号機120出力を制御して、出力バッファ450,455に書き込まれる。入力バッファ440,445および出力バッファ450,455は共に、最適処理速度を可能にする「ピンポン」RAM構造からなる。α/β記憶装置460はサブ復号機405、410、415に動作可能に接続されて、LLR計算に必要な前進と後進の経路メトリックを格納する。λアウト記憶装置465もサブ復号機405、410、415に動作可能に接続されて、サブ復号機405、410、415のそれぞれに先験情報を伝送し、次の反復での先験情報として使用される、それぞれからの外的情報を格納する。
130、135、140…先験情報、205、210…出力メモリバンク、
305,310…入力メモリバンク、405,410、415…MAPサブ復号機、425…入力バッファコントローラ、430…ベータ初期化、440,445…入力バッファ、450、455…出力バッファ、500…入力符号化ブロック、505…サブブロック、900…二重ポートメモリブロック、
Claims (9)
- 入力符号化ブロックを、ターボ復号機中の複数のMAPサブ復号機に対応する、複数のサブブロックに分割する工程と、
各サブブロックを複数の窓に分割する工程と、
各サブブロック内で窓間シャッフルをする工程と、
各窓を2つのサブ窓に分割する工程と、
各サブ窓でインターリーブ/インターリーブ解除をする工程と、
各サブ窓内でインターリーブ/インターリーブ解除された2つのデータのそれぞれを2ポートメモリの2つのポートを介して、それぞれ格納する工程と、
からなる並列のターボ復号機におけるインターリーブの方法。 - 入力符号化ブロックを3つのサブブロックに分割する工程であって、各サブブロックはターボ復号機中の複数のMAPサブ復号機に対応する請求項1に記載の方法。
- 並列のターボ復号機はASICまたはFPGA装置中で実施される請求項1に記載の方法。
- 並列のターボ復号機におけるインターリーブ/インターリーブ解除、のシステムであって、
複数のサブ復号機からなる並列のターボ復号機と、
同並列のターボ復号機に動作可能に接続されたインターリーブ/インターリーブ解除機と、
同並列のターボ復号機と同インターリーブ/インターリーブ解除機との両方に動作可能に接続された複数のメモリバンクと、
からなるシステムであって、
入力符号化ブロックは前記並列のターボ復号機によって複数のサブブロックに分割され、各サブブロックは複数の窓に分割され、窓間シャッフルが行われ、各窓はサブ窓に分割され、各サブ窓内でインターリーブ/インターリーブ解除が行われ、前記並列のターボ復号機および前記インターリーブ/インターリーブ解除機は前記複数のメモリバンクと動作可能に接続されている、システム。 - 前記入力符号化ブロックは3つのサブブロックに分割され、各サブブロックはターボ復号機中のMAPサブ復号機に対応する請求項4に記載のシステム。
- 前記並列のターボ復号機はASICまたはFPGA装置中で実施される請求項4に記載のシステム。
- 各サブ窓内での置換が2ポートメモリの2つのポートを介して行われる請求項6に記載の方法。
- 前記入力符号化ブロックは、ターボ復号機中で使用される可変数のサブ復号機に対応して、可変数のサブブロックに分割される請求項4に記載のシステム。
- 入力符号化ブロックを複数のサブブロックに分割する手段と、
各サブブロックを複数の窓に分割する手段と、
窓間シャッフルを実施する手段と、
各窓を2つのサブ窓に分割する手段と、
各サブ窓内でインターリーブ/インターリーブ解除、をする手段と、
各サブ窓内でインターリーブ/インターリーブ解除、された2つのデータのそれぞれを2ポートメモリの2つのポートを介して、それぞれ格納する工程と、
からなる、並列のターボ復号機におけるインターリーブのシステム。
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US11/216,867 US7409606B2 (en) | 2005-08-31 | 2005-08-31 | Method and system for interleaving in a parallel turbo decoder |
Publications (2)
Publication Number | Publication Date |
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JP2007068155A JP2007068155A (ja) | 2007-03-15 |
JP4478668B2 true JP4478668B2 (ja) | 2010-06-09 |
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JP2006200177A Active JP4478668B2 (ja) | 2005-08-31 | 2006-07-24 | 並列のターボ復号機中でのインターリーブの方法およびシステム。 |
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US (1) | US7409606B2 (ja) |
JP (1) | JP4478668B2 (ja) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
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US8213548B2 (en) * | 2006-04-04 | 2012-07-03 | Qualcomm Incorporated | Methods and apparatus for dynamic packet reordering |
US8139612B2 (en) * | 2006-04-04 | 2012-03-20 | Qualcomm Incorporated | Methods and apparatus for dynamic packet mapping |
US7895497B2 (en) * | 2006-06-26 | 2011-02-22 | Samsung Electronics Co., Ltd. | Apparatus and method using reduced memory for channel decoding in a software-defined radio system |
US8140932B2 (en) * | 2007-11-26 | 2012-03-20 | Motorola Mobility, Inc. | Data interleaving circuit and method for vectorized turbo decoder |
US8510642B2 (en) * | 2009-09-25 | 2013-08-13 | Stmicroelectronics, Inc. | System and method for map detector for symbol based error correction codes |
US8811452B2 (en) * | 2009-12-08 | 2014-08-19 | Samsung Electronics Co., Ltd. | Method and apparatus for parallel processing turbo decoder |
US8930791B2 (en) | 2009-12-23 | 2015-01-06 | Intel Corporation | Early stop method and apparatus for turbo decoding |
US8996948B2 (en) | 2009-12-23 | 2015-03-31 | Intel Corporation | Methods, systems, and apparatus for tail termination of turbo decoding |
US8918695B2 (en) * | 2009-12-23 | 2014-12-23 | Intel Corporation | Methods and apparatus for early stop algorithm of turbo decoding |
US8302868B2 (en) | 2010-01-15 | 2012-11-06 | Metrologic Instruments, Inc. | Parallel decoding scheme for an indicia reader |
US8819517B1 (en) | 2011-01-06 | 2014-08-26 | Intel Corporation | Systems and methods for a turbo decoder in a universal mobile telecommunication system (UMTS) |
US8495455B1 (en) | 2011-01-06 | 2013-07-23 | Mindspeed Technologies, Inc. | Systems and methods for parallel dual-mode turbo decoders |
JP2014011627A (ja) * | 2012-06-29 | 2014-01-20 | Mitsubishi Electric Corp | 内部インタリーブを有する誤り訂正復号装置 |
EP2693673A1 (en) * | 2012-08-01 | 2014-02-05 | Alcatel Lucent | Bit-interleaver for an optical line terminal |
CN111812682A (zh) * | 2020-07-24 | 2020-10-23 | 华力智芯(成都)集成电路有限公司 | 一种抗窄带干扰电路 |
Family Cites Families (11)
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US6381728B1 (en) * | 1998-08-14 | 2002-04-30 | Qualcomm Incorporated | Partitioned interleaver memory for map decoder |
US6427214B1 (en) * | 1998-09-29 | 2002-07-30 | Nortel Networks Limited | Interleaver using co-set partitioning |
US6678843B2 (en) * | 1999-02-18 | 2004-01-13 | Interuniversitair Microelektronics Centrum (Imec) | Method and apparatus for interleaving, deinterleaving and combined interleaving-deinterleaving |
US6697990B2 (en) * | 1999-12-15 | 2004-02-24 | Hughes Electronics Corporation | Interleaver design for parsed parallel concatenated codes |
US7302621B2 (en) * | 2000-01-03 | 2007-11-27 | Icoding Technology, Inc. | High spread highly randomized generatable interleavers |
US6775800B2 (en) * | 2000-01-03 | 2004-08-10 | Icoding Technology, Inc. | System and method for high speed processing of turbo codes |
US6973611B2 (en) * | 2001-04-17 | 2005-12-06 | Texas Instruments Incorporated | Interleaved coder and method |
US6603412B2 (en) * | 2001-06-08 | 2003-08-05 | Texas Instruments Incorporated | Interleaved coder and method |
US6996767B2 (en) * | 2001-08-03 | 2006-02-07 | Combasis Technology, Inc. | Memory configuration scheme enabling parallel decoding of turbo codes |
US7107509B2 (en) * | 2002-08-30 | 2006-09-12 | Lucent Technologies Inc. | Higher radix Log MAP processor |
EP1401108A1 (en) * | 2002-09-12 | 2004-03-24 | STMicroelectronics N.V. | Electronic device avoiding write access conflicts in interleaving, in particular optimized concurrent interleaving architecture for high throughput turbo-decoding |
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US20070061666A1 (en) | 2007-03-15 |
US7409606B2 (en) | 2008-08-05 |
JP2007068155A (ja) | 2007-03-15 |
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