JP2005533454A - H−arq方式のパケット再送信における送信シンボルを復元するための受信機およびその方法。 - Google Patents
H−arq方式のパケット再送信における送信シンボルを復元するための受信機およびその方法。 Download PDFInfo
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- JP2005533454A JP2005533454A JP2004523031A JP2004523031A JP2005533454A JP 2005533454 A JP2005533454 A JP 2005533454A JP 2004523031 A JP2004523031 A JP 2004523031A JP 2004523031 A JP2004523031 A JP 2004523031A JP 2005533454 A JP2005533454 A JP 2005533454A
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- 238000000034 method Methods 0.000 title claims abstract description 35
- 230000005540 biological transmission Effects 0.000 title claims description 18
- 238000004891 communication Methods 0.000 claims abstract description 27
- 230000004044 response Effects 0.000 claims abstract description 15
- 238000001914 filtration Methods 0.000 claims abstract description 6
- 239000011159 matrix material Substances 0.000 claims description 10
- 238000012545 processing Methods 0.000 claims description 7
- 238000011084 recovery Methods 0.000 claims description 2
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- 238000009792 diffusion process Methods 0.000 description 1
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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
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
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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
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
- H04B1/7097—Interference-related aspects
- H04B1/7103—Interference-related aspects the interference being multiple access interference
- H04B1/7107—Subtractive interference cancellation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
- H04B1/7097—Interference-related aspects
- H04B1/711—Interference-related aspects the interference being multi-path interference
-
- 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
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1829—Arrangements specially adapted for the receiver end
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0212—Channel estimation of impulse response
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
- Noise Elimination (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Optical Communication System (AREA)
- Facsimile Transmission Control (AREA)
- Telephone Function (AREA)
Abstract
Description
TR 25.858」)において、16−QAMのような高レベル変調方式を使用すること、およびより拡散率の小さな複数のチャネライゼーションコード(Channelization Code)を使用することによってサポートされている。従来のRAKE受信機を使用した16−QAM変調シンボルの受信は、チャネライゼーションコード間の直交性が損なわれることによってひき起こされる符号間およびシンボル間の干渉のために、マルチパス(分散的な)環境下において非常に不安定である。これらの構造的な干渉はシステムのピーク時のデータ転送速度/スループットを著しく制限してしまう。しかしながら、高速データサービスは、マルチパスチャネルが普及している都市部において最も多く利用されるように考慮されている。従って、符号間およびシンボル間における干渉を軽減する機能のある受信機が必要とされている。このために、そのような受信機は、同時係属中であり、本願と同一の譲受人に譲渡される特許文献1において提示されている。
符号レートおよびコンバイニング技術に依存しながら、前回のパケットの送信の復号化から生じた結果は、適切にパンクチャード符号化される。H−ARQ方式のパケット再送信におけるビットは、
図3は本発明における好適な実施形態の流れ図である。工程302において、該方法はインデックス番号nを1に初期化する。工程304において、該方法はベースバンド信号を受信する。
工程310において該方法は、有効なチャネルインパルス応答行列を判定する。
用され得る。具体的には工程313において、該方法は符号間の干渉を除去し、送信されたシンボルを復元するために、工程308において修正されたベースバンド信号から生成された、以下の行列をなす修正された受信ベースバンド信号をフィルタリングする。
か判定する。nがパケット長と等しい場合、シンボルは全て復元し、該方法は工程320で終了する。nがパケット長と等しくない場合、該方法は工程318においてnの値を増加し、工程304に進み、復元処理を繰り返す。
Claims (9)
- H−ARQ方式のパケット再送信の通信信号において送信されたシンボルを復元する方法であって、
通信信号を受信することと、
所望のシンボルに起因しない信号の不要な成分を判定することと、
信号から前記不要な成分を除去し、修正された通信信号を生成することと、
有効なチャネルインパルス応答を判定することと、
前記有効なチャネルインパルス応答を使用して、ブロックフィルタを生成することと、
前記ブロックフィルタを使用して前記修正された通信信号をフィルタリングし、修正された信号における符号間の干渉を除去し、所望のシンボルを復元することとを備える方法。 - 後のH−ARQ方式のパケット再送信におけるシンボルの復元に使用するために、復元したシンボルの内の一つと、前記復元したシンボルを使用して復号化した結果とを保存する工程を更に備える請求項1記載の方法。
- 送信信号を受信し、かつ前記送信信号をベースバンド信号に変換するための受信機フロントエンド部と、
前記受信機フロントエンド部に機能的に接続されたベースバンド信号処理ブロックであって、ベースバンド信号を受信し、所望のシンボルに起因しない信号の不要成分を判定し、前記不要成分を信号から除去して、修正された通信信号を生成し、有効なチャネルインパルス応答を判定し、前記有効なチャネルインパルス応答を使用してブロックフィルタを
生成し、修正された通信信号内の符号間の干渉を除去し、前記ブロックフィルタを用いて送信シンボルを復元させることによって、H−ARQ方式のパケット再送信の通信信号において送信された信号を復元するブロックと、
復元したシンボルを受信し、前記シンボルを意図するアプリケーションにルーティングするための、前記ベースバンド信号処理ブロックに機能的に接続されたバックエンド部とを備える受信機。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/198,329 US7573958B2 (en) | 2002-07-18 | 2002-07-18 | Receiver for and method of recovering transmitted symbols in a H-ARQ packet retransmission |
PCT/US2003/020153 WO2004010596A1 (en) | 2002-07-18 | 2003-06-26 | Receiver for and method of recovering transmitted symbols in a h-arq packet retransmission |
Publications (3)
Publication Number | Publication Date |
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JP2005533454A true JP2005533454A (ja) | 2005-11-04 |
JP2005533454A5 JP2005533454A5 (ja) | 2009-12-10 |
JP4481817B2 JP4481817B2 (ja) | 2010-06-16 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2004523031A Expired - Fee Related JP4481817B2 (ja) | 2002-07-18 | 2003-06-26 | H−arq方式のパケット再送信における送信シンボルを復元するための受信機およびその方法。 |
Country Status (8)
Country | Link |
---|---|
US (1) | US7573958B2 (ja) |
EP (1) | EP1529346B1 (ja) |
JP (1) | JP4481817B2 (ja) |
KR (1) | KR100647032B1 (ja) |
CN (1) | CN100397790C (ja) |
AU (1) | AU2003281566A1 (ja) |
BR (1) | BRPI0312755A2 (ja) |
WO (1) | WO2004010596A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2009131094A1 (ja) * | 2008-04-22 | 2009-10-29 | シャープ株式会社 | 通信装置、通信システム、受信方法およびプログラム |
Families Citing this family (8)
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TWI310911B (en) * | 2005-09-29 | 2009-06-11 | Innovative Sonic Ltd | Method and apparatus for initiating a storage window in a periodic packet retransmission wireless communications system operated in unacknowledged mode |
KR100943590B1 (ko) * | 2006-04-14 | 2010-02-23 | 삼성전자주식회사 | 이동 통신 시스템에서 상태 보고의 송수신 방법 및 장치 |
EP1852994A1 (en) * | 2006-04-25 | 2007-11-07 | Samsung Electronics Co., Ltd. | Method and apparatus for performing HARQ of a packet in a mobile communication system |
US8750334B2 (en) * | 2006-10-02 | 2014-06-10 | Motorola Mobility Llc | Link layer assisted robust header compression context update management |
KR101378266B1 (ko) * | 2007-08-16 | 2014-03-26 | 재단법인서울대학교산학협력재단 | 통신 시스템에서 신호를 디코딩하는 수신기 및 방법 |
EA201071414A1 (ru) * | 2008-07-09 | 2011-08-30 | Шарп Кабусики Кайся | Устройство связи, система связи, способ приема и способ связи |
FR2938996B1 (fr) * | 2008-11-27 | 2012-12-28 | Canon Kk | Procede et dispositif d'egalisation de canal |
WO2017222582A1 (en) * | 2016-06-20 | 2017-12-28 | Intel IP Corporation | Apparatuses for combining and decoding encoded blocks |
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JP3560991B2 (ja) * | 1993-09-20 | 2004-09-02 | 株式会社東芝 | 適応型最尤系列推定装置 |
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GB2333014A (en) * | 1997-12-31 | 1999-07-07 | Samsung Electronics Co Ltd | Virerbi equalizer using dsp's |
US6339612B1 (en) | 1998-02-09 | 2002-01-15 | Motorola, Inc. | Method and apparatus for joint detection of data in a direct sequence spread spectrum communications system |
US6154443A (en) * | 1998-08-11 | 2000-11-28 | Industrial Technology Research Institute | FFT-based CDMA RAKE receiver system and method |
US6219088B1 (en) | 1998-11-03 | 2001-04-17 | Broadcom Corporation | NTSC interference rejection filter |
US6421803B1 (en) | 1999-06-25 | 2002-07-16 | Telefonaktiebolaget L M Ericsson (Publ) | System and method for implementing hybrid automatic repeat request using parity check combining |
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JP3563357B2 (ja) * | 2000-06-23 | 2004-09-08 | 松下電器産業株式会社 | 適応変調通信システム |
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-
2002
- 2002-07-18 US US10/198,329 patent/US7573958B2/en not_active Expired - Fee Related
-
2003
- 2003-06-26 CN CNB038171155A patent/CN100397790C/zh not_active Expired - Fee Related
- 2003-06-26 BR BRPI0312755A patent/BRPI0312755A2/pt not_active IP Right Cessation
- 2003-06-26 KR KR1020057000930A patent/KR100647032B1/ko not_active IP Right Cessation
- 2003-06-26 AU AU2003281566A patent/AU2003281566A1/en not_active Abandoned
- 2003-06-26 JP JP2004523031A patent/JP4481817B2/ja not_active Expired - Fee Related
- 2003-06-26 WO PCT/US2003/020153 patent/WO2004010596A1/en active Application Filing
- 2003-06-26 EP EP03742225.0A patent/EP1529346B1/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009131094A1 (ja) * | 2008-04-22 | 2009-10-29 | シャープ株式会社 | 通信装置、通信システム、受信方法およびプログラム |
CN102007718A (zh) * | 2008-04-22 | 2011-04-06 | 夏普株式会社 | 通信装置、通信系统、接收方法及程序 |
JPWO2009131094A1 (ja) * | 2008-04-22 | 2011-08-18 | シャープ株式会社 | 通信装置、通信システム、受信方法およびプログラム |
Also Published As
Publication number | Publication date |
---|---|
BRPI0312755A2 (pt) | 2016-11-08 |
CN100397790C (zh) | 2008-06-25 |
US20040013213A1 (en) | 2004-01-22 |
AU2003281566A1 (en) | 2004-02-09 |
KR100647032B1 (ko) | 2006-11-23 |
EP1529346A4 (en) | 2009-02-11 |
US7573958B2 (en) | 2009-08-11 |
EP1529346A1 (en) | 2005-05-11 |
WO2004010596A1 (en) | 2004-01-29 |
JP4481817B2 (ja) | 2010-06-16 |
KR20050027248A (ko) | 2005-03-18 |
CN1669229A (zh) | 2005-09-14 |
EP1529346B1 (en) | 2013-05-15 |
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