JP2013055688A - ベクトル化されたターボ復号器のためのデータ・インターリーブ回路および方法 - Google Patents
ベクトル化されたターボ復号器のためのデータ・インターリーブ回路および方法 Download PDFInfo
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- JP2013055688A JP2013055688A JP2012251284A JP2012251284A JP2013055688A JP 2013055688 A JP2013055688 A JP 2013055688A JP 2012251284 A JP2012251284 A JP 2012251284A JP 2012251284 A JP2012251284 A JP 2012251284A JP 2013055688 A JP2013055688 A JP 2013055688A
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- 238000000034 method Methods 0.000 title abstract description 42
- 230000015654 memory Effects 0.000 abstract description 61
- 239000013598 vector Substances 0.000 abstract description 32
- 238000012545 processing Methods 0.000 description 27
- 230000008569 process Effects 0.000 description 26
- 238000010586 diagram Methods 0.000 description 17
- 230000002441 reversible effect Effects 0.000 description 15
- 238000006467 substitution reaction Methods 0.000 description 13
- 238000013459 approach Methods 0.000 description 9
- 230000006870 function Effects 0.000 description 9
- 238000004891 communication Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 238000004364 calculation method Methods 0.000 description 5
- 125000004122 cyclic group Chemical group 0.000 description 5
- 230000001965 increasing effect Effects 0.000 description 5
- 238000000354 decomposition reaction Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
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Classifications
-
- 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
- H03M13/2778—Interleaver using block-wise interleaving, e.g. the interleaving matrix is sub-divided into sub-matrices and the permutation is performed in blocks of sub-matrices
-
- 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
- H03M13/2739—Permutation polynomial interleaver, e.g. quadratic permutation polynomial [QPP] interleaver and quadratic congruence interleaver
-
- 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
- H03M13/2775—Contention or collision free turbo code internal interleaver
-
- 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
- H03M13/65—Purpose and implementation aspects
- H03M13/6522—Intended application, e.g. transmission or communication standard
- H03M13/6525—3GPP LTE including E-UTRA
Abstract
【解決手段】M個のW値ウィンドウを含むデータ・ブロックをインターリーブするためのデータ・インターリーブ回路(306)および方法が、ウィンドウ内インデックスwとM個の要素を有するウィンドウ間置換ベクトルmとを生成するためのインデックス生成器(500)と、ウィンドウ内インデックスwを有するM個のデータ値をメモリから受信するように動作可能であり、さらに、ウィンドウ間置換ベクトルmに従ってM個のデータ値を並べ直して、並べ直したデータ値を出力するように動作可能なウィンドウ間置換回路(504)とを備える。インデックス生成器は、置換多項式に従ってウィンドウ内インデックスwとウィンドウ間置換ベクトルmとを生成する再帰回路を含む。1つの応用例では、並べ直したデータ値をターボ復号器のM個の並列プロセッサに送る。
【選択図】 図5
Description
(1)レジスタP5(x)を初期化して0にする。
(2)レジスタP4 5(x)を初期化して27にする(P2 3(x)多項式の定数項)。(3)レジスタP3 4(x)を初期化して20にする(P1 2(x)多項式の定数項)。(4)レジスタP2 3(x)を初期化して20にする(定数項P0 1(x))。
(5)レジスタP1 2(x)およびP0 1(x)を初期化して0にする。
(1)レジスタP5(x)を初期化して0にする。
(2)レジスタP4 5(x)を初期化して13にする(Q2 3(x)多項式の定数項)。(3)レジスタP3 4(x)を初期化して20にする(Q1 2(x)多項式の定数項)。(4)レジスタP2 3(x)を初期化して20にする(定数項Q0 1(x))。
(5)レジスタP1 2(x)およびP0 1(x)を初期化して0にする。
(1)インターリーバ・モジュールは、置換およびその逆の両方を生成できなければならない。さらに、モジュールは、これらの置換を正の順序および逆の順序の両方で生成できなければならない。これには、置換多項式を再帰的に算出する一般的な論理回路が必要である。論理回路は、何らかの最高次数(LTEの場合は4または5)に対してデザインする必要がある。
Claims (2)
- K個の要素を有するデータ・ブロックを符号化するためのターボ符号器であって、
次数nの置換多項式、
- K個の要素を有するデータ・ブロックを復号化するためのターボ復号器であって、
次数nの置換多項式、
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/944,643 | 2007-11-26 | ||
US11/944,643 US8140932B2 (en) | 2007-11-26 | 2007-11-26 | Data interleaving circuit and method for vectorized turbo decoder |
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JP2010535003A Division JP5499368B2 (ja) | 2007-11-26 | 2008-11-11 | ベクトル化されたターボ復号器のためのデータ・インターリーブ回路および方法 |
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JP2013055688A true JP2013055688A (ja) | 2013-03-21 |
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JP2010535003A Expired - Fee Related JP5499368B2 (ja) | 2007-11-26 | 2008-11-11 | ベクトル化されたターボ復号器のためのデータ・インターリーブ回路および方法 |
JP2012251284A Pending JP2013055688A (ja) | 2007-11-26 | 2012-11-15 | ベクトル化されたターボ復号器のためのデータ・インターリーブ回路および方法 |
JP2013098659A Pending JP2013150365A (ja) | 2007-11-26 | 2013-05-08 | ベクトル化されたターボ復号器のためのデータ・インターリーブ回路および方法 |
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US (1) | US8140932B2 (ja) |
JP (3) | JP5499368B2 (ja) |
CN (1) | CN101874354B (ja) |
WO (1) | WO2009070440A1 (ja) |
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Also Published As
Publication number | Publication date |
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US20090138668A1 (en) | 2009-05-28 |
CN101874354B (zh) | 2014-12-03 |
JP5499368B2 (ja) | 2014-05-21 |
JP2013150365A (ja) | 2013-08-01 |
WO2009070440A1 (en) | 2009-06-04 |
US8140932B2 (en) | 2012-03-20 |
CN101874354A (zh) | 2010-10-27 |
JP2011504704A (ja) | 2011-02-10 |
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