| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 101 | Method and system for generating a low-density parity check code | JP2003176330 | 2003-06-20 | JP4422436B2 | 2010-02-24 | フェン−ウェン・スン; ムスタファ・エロズ; リン−ナン・リー |
| 102 | Method and system for decoding a low density parity check (ldpc) Code | JP2003190317 | 2003-07-02 | JP3917563B2 | 2007-05-23 | フェン−ウェン・スン; ムスタファ・エロズ; リン−ナン・リー |
| 103 | Method for coded modulation | JP2002541886 | 2001-10-31 | JP3877311B2 | 2007-02-07 | ホフマン フランク |
| 104 | Weighted non-binary repeat accumulate codes and coding method and apparatus for space-time code | JP2003561105 | 2003-01-16 | JP3808074B2 | 2006-08-09 | キョン−チュル・ヤン; ジェ−ヨル・キム; ジュン−ミン・ソン |
| 105 | Convolution decoder | JP24502396 | 1996-09-17 | JP3760001B2 | 2006-03-29 | ラマスワミ クマール; シドニー スチュワート ジョン |
| 106 | Multi-level coding using the time diversity | JP50290999 | 1998-06-11 | JP3759964B2 | 2006-03-29 | ウェイ リー―ファン |
| 107 | Digital audio broadcasting system and apparatus using a complementary pattern-mapped convolutional code | JP2004502476 | 2003-04-21 | JP2005525019A | 2005-08-18 | クローガー，ブライアン，ダブリュ |
| デジタル情報を送信する方法は、相補パターンマップ式畳込みコードを用いて複数の情報デジタルビット（５４）にフォーワード誤り訂正符号化処理を施し（５６）、複数のキャリア信号をフォーワード誤り訂正符号化したビットで変調し（６２）、変調済みキャリア信号を送信（７５）するステップを用いる。 変調は、振幅レベルに対応するグレイコードを用いてＱＡＭコンステレーションの同相及び直角位相成分をそれぞれ独立して振幅変調するステップを含むことができる。 かかる信号の受信機もまた記載されている。 | ||||||
| 108 | Bit labeling for amplitude phase shift constellation used by the low-density parity check (ldpc) Code | JP2004562643 | 2003-07-03 | JP2005520469A | 2005-07-07 | エロズ、ムスタファ; サン、フェン−ウェン; リー、リン−ナン |
| An approach is provided for a method of encoding structure Low Density Parity Check (LDPC) codes. Memory storing information representing a structured parity check Matrix of Low Density Parity Check (LDPC) codes is accessed during the encoding process. The information is organized in tabular form, wherein each row represents occurrences of one Values within a first column of a group of columns of the parity check matrix. The rows correspond to groups of columns of the parity check matrix, wherein subsequent columns within each of the groups are derived according to a predetermined operation. An LDPC coded signal is output based on the stored information representing the parity check matrix. | ||||||
| 109 | Error correction code system and method of on-drive integrated sector format raid | JP2003384262 | 2003-11-13 | JP2004171751A | 2004-06-17 | ASANO HIDEO; HASSNER MARTIN AURELIANO; HEISE NYLES NORBERT; HETZLER STEVEN R; TAMURA TETSUYA |
| PROBLEM TO BE SOLVED: To provide an encoding system and related method which prevent erroneous correction by parity sector correction in on-drive RAID system or the like. SOLUTION: In this system, A parity cluster block being a perfect cluster itself receiving C3 protection is added. There is seldom possibility of providing defective data even if "jami" error is caused by providing such functions as C4 level correction of a cluster level by a parity sector checked and verified by C3 check having a high reliability level and checking compatibility of the cluster block. Scrub algorithm avoids read-out - change - write-in operation by delaying finish of C2 and C3 check until a storage device becomes an idle state. COPYRIGHT: (C)2004,JPO | ||||||
| 110 | Method for coded modulation | JP2002541886 | 2001-10-31 | JP2004514326A | 2004-05-13 | フランク ホフマン |
| 本発明による方法は、ディジタルデータの符号化変調のための方法に関しており、この場合は多段に符号化された変調が実施される。 その際にこの符号か変調に対する有効ビットが平行する複数の信号流に分割され、各信号流がそれぞれの符号器にチャネルコーディングの実施のために供給される。 各符号化器においては有効ビットにテールビットが加えられる。 これは有効ビットとは異なってそれぞれの符号化器に対して予め設定されたビット数を達成するために、可変のコードレートでもってチャネルコーディングされる。 それにより平行して符号化された全ての信号流が同じ数のビットを含むようになる。 | ||||||
| 111 | Method and system decoding low-density parity check (ldpc) code | JP2003190317 | 2003-07-02 | JP2004080753A | 2004-03-11 | EROZ MUSTAFA; SUN FENG-WEN; LEE LIN-NAN |
| PROBLEM TO BE SOLVED: To provide a method and system which decode an LDPC code used for supporting a high data rate without introducing complexity by using a simple coding and decoding process. SOLUTION: Based on distance vector information related with a distance between a received noise symbol point and the symbol point of signal constellation related with the LDPC code, this decoding method receives preliminary probability information and transmits post probability information the preliminary probability information, to decide whether the formula of parity check related with the LDPC code is satisfied according to the preliminary probability information and the post probability information. Then, the method selectively reproduces a signal constellation bit metric based on a deciding step, and outputs a message decoded based on the reproduced signal constellation bit metric. COPYRIGHT: (C)2004,JPO | ||||||
| 112 | Digital audio broadcasting system using a puncturable convolutional code | JP2000541791 | 1999-02-24 | JP2002510898A | 2002-04-09 | カマラタ，デニス，エム; クローガー，ブライアン，ダブリュー; ステリク，ロイ，アール |
| (57)【要約】 この放送方式は、ノンパンクチャラブルビットとパンクチャラブルビットを有する畳込み符号を用いてプログラム材料を符号化し、直角周波数分割多重化キャリア信号をこの畳込み符号で変調する。 ノンパンクチャラブルビットはキャリアの第１の群により搬送され、パンクチャラブルビットはキャリアの第２の群により搬送される。 第１の群のキャリア信号は、第２の群のキャリア信号ほど干渉を受け易くない。 その後、キャリア信号は受信機へ向けて放送され、受信機は第２の群のキャリアの損傷状態を判定して、損傷状態にあると判定した任意のキャリアにより搬送されるパンクチャラブルビットを消去する。 その結果、パンクチャド符号が得られ、後で復号されてプログラム材料が復元される。 | ||||||
| 113 | Signal transmitting device | JP106092 | 1992-01-07 | JP3238448B2 | 2001-12-17 | ジェイムス ムルズリー ティモシー |
| 114 | Method for simplified viterbi detection for sequence detection and viterbi detector | JP2000114013 | 2000-04-14 | JP2001053622A | 2001-02-23 | NIKOLIC BORIVOJE; FU LEO; LEUNG MICHAEL; OKLOBDZIJA VOJIN G; RICHARD YAMASAKI |
| PROBLEM TO BE SOLVED: To simplify a viterbi sequence detector for E2PR4 type channel. SOLUTION: To reduce an 8/9-rate sliding block grating to 14 states, the detector excludes two states by coding restrictions, remove in-grating low- probability branches (by limiting a positive and a negative input sample target level), and decreases the number of these units from 14 to 11 (four four-way addition-comparison-selection(ACS) units, three three-way ACS units, three two-way ACS units, and one single-way ACS unit) by sharing an ACS unit among the states. Twenty seven branch metering units(BMU) supply inputs to these ACS units. For example, a 0, 0BMU supplies an input to 0/15 and 15/0 ACS units, a -1, 0BMU supplies an input to 0/15 and 11/4 ACS units, and a 0, 1BMU supplies an input to 1/14 and 6/9 ACS units. The simplification never makes a bit error rate worse. COPYRIGHT: (C)2001,JPO | ||||||
| 115 | Information encoding device, information decoding device, and methods therefor | JP16739598 | 1998-06-15 | JPH1198211A | 1999-04-09 | FUIRITSUPU PIRE; KUROODO RU DANTE |
| PROBLEM TO BE SOLVED: To provide a method and device with good noise resistance to encoding and decoding of information. SOLUTION: A first labeling means relates information to be encoded to K pieces of primary initial polynomials. An encoding means executes a polynomial calculation. At the time of polynomial calculation, K pieces of encoded systems having P pieces of elements which are more than K pieces are formed at first. Then, each first encoded polynomial of the K pieces of systems is made equal to one of the K pieces of initial polynomials, and the other encoded polynomials of the system are made equal to the product of the preceding polynomial in the system and a prescribed polynomial. Then, a modulo Q is calculated for the coefficient of the encoded polynomial, and the modulo of a quadratic polynomial is calculated for the encoded polynomial. Then, a final system constituted of P pieces of polynomials is formed. Here, each of the P pieces of polynomials is made equal to the modulo Q of the sum of the encoded polynomials of identical rank of the K pieces of encoded systems. | ||||||
| 116 | Fast trellis coding and decoding method | JP24153997 | 1997-09-05 | JPH1127157A | 1999-01-29 | WOLF JACK K |
| PROBLEM TO BE SOLVED: To provide a method and a device for constructing a fast trellis code for PSK(phase shift keying) modulation which is encoded and decoded by using an encoder and a decoder for punctured convolutional coding of 1/2 coding rate and to design trellis encoder and decoder for 8-PSK, specially for coding in 5/6 coding rate. SOLUTION: One set on N input data bits is received by a decoder 1. Input bits i1 ,..., ik of the encoder 1 are convolutionally encoded by using an encoder with k/(k+1) coding rate based on a punctured coding rate 1/2 convolutional encoder 1. Coded signals a1 , a2 ,..., ak and ak+1 are supplied to a multiplexer 2 together with residual input bits ik+1 , ik+2 ,..., iN. The multiplexer 2 connects a coded signal with residual input data bits and supplies a set of data to an M element modulator 3. Each set consists of log2 M elements and is continuously supplied to the modulator 3 for transmission. | ||||||
| 117 | Multi-level coded modulation communication device | JP533193 | 1993-01-14 | JP2845705B2 | 1999-01-13 | SASAKI EISAKU |
| 118 | Digital transmission system and method | JP33966297 | 1997-12-10 | JPH114270A | 1999-01-06 | CHOULY ANTOINE; GIANELLA DAVID |
| PROBLEM TO BE SOLVED: To improve a performance and to make it possible for a system to properly function by the minimum S/N by combining a generating code generated by using a systematic superimposed trellis encoding with a multidimensional amplitude modulation having a dimension Q which has 2M number of states and using a block decode as a repetitive decode. SOLUTION: Input data from a source 5 is converted to a 16-QAM symbol by a memory 10, a row encoding means 12, a column encoding means 14 and a 4-AM digital modulation symbol assignment element 16, and transmitted to a buffering means 20 through a channel 19. A viterbi decoder 221 and a parity code decoder 222 output hard discrimination outputs 211 and 212 and execute a loop backs of soft discrimination outputs 231 and 232 to the buffering means 20 by way of data interleavers 241 and 242 . Decoding by the decoder 222 is executed on the basis of the hard discrimination output 211 . Thus, credibility of the hard discrimination outputs 211 and 212 can be improved as a repetitive processing repeats. | ||||||
| 119 | Digital signal encoding apparatus | JP50008088 | 1987-12-01 | JP2799719B2 | 1998-09-21 | ジョン・ダビッド ブロウンリイ; バリー・ジョージ・ウィリアム ロイド |
| 120 | Encoding device of information | JP13709285 | 1985-06-25 | JP2677348B2 | 1997-11-17 | ロバート カルダーバンク アーサー; ジエームス アレキサンダー スローン ネイル |
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