JPH05507397A - Cdmaサブトラクティブ復調 - Google Patents
Cdmaサブトラクティブ復調Info
- Publication number
- JPH05507397A JPH05507397A JP92502847A JP50284792A JPH05507397A JP H05507397 A JPH05507397 A JP H05507397A JP 92502847 A JP92502847 A JP 92502847A JP 50284792 A JP50284792 A JP 50284792A JP H05507397 A JPH05507397 A JP H05507397A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- signals
- code
- information
- composite signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- H04B1/71072—Successive interference cancellation
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- 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
- H04B2001/71077—Partial interference cancellation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
- H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
- H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
- H04B2201/70703—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation using multiple or variable rates
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Stereo-Broadcasting Methods (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
- Graft Or Block Polymers (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Radio Relay Systems (AREA)
- Small-Scale Networks (AREA)
- Error Detection And Correction (AREA)
- Noise Elimination (AREA)
- Breeding Of Plants And Reproduction By Means Of Culturing (AREA)
- Investigating Or Analysing Biological Materials (AREA)
Abstract
Description
Claims (4)
- 1.符号分割スペクトル拡散通信信号を使用して複数の局間で情報信号の通信を 行う多元接続、スペクトル拡散通信システムにおいて、各局は、 対応する拡散コードを有する情報信号を拡散し拡散符号化信号む送信する送信手 段と、 複数の重畳する拡散符号化信号の合成信号を受信する受信手段、を具備し、 受信手段は、 前記情報信号の相対信号強度に従った順序で個別の拡散コードを順序ずけるコー ド順序付け手段と、前記コード順序付け手段から受信する第1順序の拡散コード を有する前記合成信号を繰返し復号して一連の復号信号を発生する復号手段と、 対応する拡散コードを使用して前記復号信号を逐次記録して一連の記録信号を発 生する記録手段と、前記記録された信号を前記合成信号から逐次除去する信号除 去手段と、 前記コード順序付け手段から次の順序付けされたコードを遂次選定するコード選 定手段、 を含む、多元接続スペクトル拡散通信システム。
- 2.符号分割スペクトル拡散通信信号を使用して複数の局間で情報信号の通信を 行う多元接続、スペクトル拡散通信システムにおいて、各局は、 対応する拡散コードを有する情報信号を拡散させる手段と、 前記拡散情報ヘスクランプリングビットシーケンスを加えるスクランプリング手 段と、 前記スクランブルされた拡散符号化情報信号を着信する手段、 を含む送信機と、 スクランプリングビットシーケンスを使用して前記合成信号をデスクランブルす るデスクランブル手段と、拡散コードを相関させることにより前記合成信号を繰 り返し復号して一連の復号信号を発生する復号手段、を含み、重畳する送信信号 の合成信号を受信する受信手段、 を具備する、多元接続、スペクトル拡散通信システム。
- 3.符号分割スペクトル拡散通信信号を使用して複数の局間で情報信号の通信を 行う多元接続、スペクトル拡散通信システムにおいて、各局は、 情報信号のビットシーケンスブロックを符号化する符号化手段と、 前記ブロック符号化情報信号を送信する手段、を含む送信機と、 前記合成信号を前記情報信号に対応するブロックコードと繰り返し相関させる相 関手段と、最大相関を発生するブロックコードを決定して相関信号を発生する比 較手段と、 前記合成信号から前記相関信号を遂次除去する信号除去手段と、 前記対応するブロツクコードを使用して前記相関された合成信号の残部を記録し 一連の記録信号を発生する逆相関手段、 を含む、重畳する送信信号の合成信号を受信する受信手段、 を具備する、多元接続スペクトル拡散通信システム。
- 4.符号分割スペクトル拡散通信信号を使用して複数の局間で情報信号の通信を 行う多元接続、スペクトル拡散通信システムにおいて、 さまざまな局からのさまざまな情報信号が同じ拡散コードを有するような、対応 する擬似ランダム拡散コードを使用して前記局からの個別の情報信号を拡散し、 前記一つの局に対応するユニークな、選定スクランプリングビットシーケンスを 使用して前記各拡散符号化情報信号をスクランブルし、 各局から前記スクランブルされた、拡散符号化信号を送信し、 重畳する送信信号の合成信号を受信し、前記一つのユニークなスクランプリング ビットシーケンスを使用して前記合成信号をデスクランブルし選定局からの拡散 符号化情報信号を前記合成信号内の他の信号から識別し、 選定拡散コードを相関することにより前記合成信号を繰返し復号して一連の復号 信号を発生する、ことからなる方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/628,359 US5151919A (en) | 1990-12-17 | 1990-12-17 | Cdma subtractive demodulation |
US628,359 | 1990-12-17 | ||
PCT/US1991/009174 WO1992011716A1 (en) | 1990-12-17 | 1991-12-17 | Cdma subtractive demodulation |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH05507397A true JPH05507397A (ja) | 1993-10-21 |
JP3081642B2 JP3081642B2 (ja) | 2000-08-28 |
Family
ID=24518547
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP04502847A Expired - Lifetime JP3081642B2 (ja) | 1990-12-17 | 1991-12-17 | Cdmaサブトラクティブ復調 |
Country Status (19)
Country | Link |
---|---|
US (1) | US5151919A (ja) |
EP (1) | EP0491668B1 (ja) |
JP (1) | JP3081642B2 (ja) |
AT (1) | ATE163336T1 (ja) |
AU (1) | AU645646B2 (ja) |
BR (1) | BR9106226A (ja) |
CA (1) | CA2076006C (ja) |
DE (1) | DE69128927T2 (ja) |
DK (1) | DK0491668T3 (ja) |
ES (1) | ES2113876T3 (ja) |
FI (1) | FI108589B (ja) |
GR (1) | GR3026244T3 (ja) |
HK (1) | HK1009366A1 (ja) |
MX (1) | MX9102562A (ja) |
MY (1) | MY107860A (ja) |
RU (1) | RU2104615C1 (ja) |
SG (1) | SG49656A1 (ja) |
UA (1) | UA41256C2 (ja) |
WO (1) | WO1992011716A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003526099A (ja) * | 2000-03-07 | 2003-09-02 | コミツサリア タ レネルジー アトミーク | 磁界を使用して対象物の位置または向きを決定するための方法ならびに対応するデバイス |
WO2007088752A1 (ja) * | 2006-02-01 | 2007-08-09 | Sharp Kabushiki Kaisha | 信号分離装置、通信装置および信号分離方法 |
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JP2003526099A (ja) * | 2000-03-07 | 2003-09-02 | コミツサリア タ レネルジー アトミーク | 磁界を使用して対象物の位置または向きを決定するための方法ならびに対応するデバイス |
WO2007088752A1 (ja) * | 2006-02-01 | 2007-08-09 | Sharp Kabushiki Kaisha | 信号分離装置、通信装置および信号分離方法 |
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FI923678A (fi) | 1992-08-17 |
FI108589B (fi) | 2002-02-15 |
HK1009366A1 (en) | 1999-05-28 |
UA41256C2 (uk) | 2001-09-17 |
JP3081642B2 (ja) | 2000-08-28 |
EP0491668B1 (en) | 1998-02-18 |
CA2076006A1 (en) | 1992-06-18 |
EP0491668A3 (en) | 1992-12-30 |
DE69128927T2 (de) | 1998-06-04 |
BR9106226A (pt) | 1993-03-30 |
SG49656A1 (en) | 1998-06-15 |
EP0491668A2 (en) | 1992-06-24 |
GR3026244T3 (en) | 1998-05-29 |
RU2104615C1 (ru) | 1998-02-10 |
ATE163336T1 (de) | 1998-03-15 |
DE69128927D1 (de) | 1998-03-26 |
US5151919A (en) | 1992-09-29 |
WO1992011716A1 (en) | 1992-07-09 |
MX9102562A (es) | 1992-06-01 |
ES2113876T3 (es) | 1998-05-16 |
MY107860A (en) | 1996-06-29 |
CA2076006C (en) | 2001-08-07 |
AU9136691A (en) | 1992-07-22 |
AU645646B2 (en) | 1994-01-20 |
DK0491668T3 (da) | 1998-09-23 |
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