JP2001501798A - Cdma通信システム用の複素4相系列発生方法および発生装置 - Google Patents
Cdma通信システム用の複素4相系列発生方法および発生装置Info
- Publication number
- JP2001501798A JP2001501798A JP11523969A JP52396999A JP2001501798A JP 2001501798 A JP2001501798 A JP 2001501798A JP 11523969 A JP11523969 A JP 11523969A JP 52396999 A JP52396999 A JP 52396999A JP 2001501798 A JP2001501798 A JP 2001501798A
- Authority
- JP
- Japan
- Prior art keywords
- bit
- code
- output
- mixer
- bits
- 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.)
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J13/00—Code division multiplex systems
- H04J13/10—Code generation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J13/00—Code division multiplex systems
- H04J13/0007—Code type
- H04J13/0022—PN, e.g. Kronecker
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J13/00—Code division multiplex systems
- H04J13/10—Code generation
- H04J13/102—Combining codes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J13/00—Code division multiplex systems
- H04J13/0007—Code type
- H04J2013/0037—Multilevel codes
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Mobile Radio Communication Systems (AREA)
- Time-Division Multiplex Systems (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Complex Calculations (AREA)
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1.複素4相符号分割多重接続(CDMA)符号を発生する装置であって、 初期設定0の複数のフリップフロップと、 前記複数のフリップフロップの出力を受ける第1の入力とパラメータMをパラ メータNで除算した商(ここでMおよびNは整数であり、MはNに対する素数) を受ける第2の入力とを有するアキュムレータであって、これら第1および第2 の入力経由で受けたデータを合成して前記フリップフロップにその合成データを 供給するアキュムレータと、 前記フリップフロップから第1のビットおよび第2のビットを抽出する抽出器 と、 それら抽出された第1のビットおよび第2のビットをI符号およびQ符号に変 換する手段と を含む装置。 2.前記複数のフリップフロップが帰還路を構成し前記アキュムレータが加算器 である請求項1記載の装置。 3.前記フリップフロップが上位ビットから下位ビットに至る複数のビットを代 表する16個のフリップフロップから成り、前記抽出された第1のビットが最下位 から第5のビットであり、前記抽出された第2のビットが最下位から第6のビッ トである請求項1記載の装置。 4.前記I符号およびQ符号を拡散器に転送する請求項1記載の装置。 5.前記I符号およびQ符号を逆拡散器に転送する請求項1記載の装置。 6.複素4相符号分割多重接続(CDMA)符号を発生する方法であって、 (a)初期設定0の複数のビットを有するレジスタを準備する過程と、 (b)第1のパラメータMおよび第2のパラメータを、それらパラメータMおよ びNがそれぞれ整数であってMがNに対する素数になるように選ぶ過程と、 (c)ビット組合せを生ずるように商M/Nを前記レジスタの内容と合成する過 程と、 (d)前記レジスタの内容を前記ビット組合せで置換する過程と、 (e)前記レジスタから第1のビットおよび第2のビットを抽出する過程と、 (f)抽出された前記第1のビットおよび第2のビットからI符号およびQ符号 を発生する過程と、 (g)前記I符号およびQ符号を出力する過程と、 (h)前記過程(c)乃至(g)を繰り返す過程と を含む方法。 7.前記レジスタが下位ビットから上位ビットに至る16のビットを有し、前記第 1のビットが和のうち最下位から第5のビットであり、前記第2のビットが和の うち最下位から第6のビットである請求項6記載の方法。 8.前記合成する過程を前記商M/Nと前記レジスタの内容との和を出力する加 算器で行う請求項6記載の方法。 9.前記I符号およびQ符号を拡散器に出力する請求項6記載の方法。 10.前記I符号およびQ符号を逆拡散器に出力する請求項6記載の方法。 11.複素4相符号分割多重接続(CDMA)符号を発生する装置であって、 等差数列数値を出力する手段と、 前記等差数列数値の等差値を出力する手段と、 前記等差数列数値を受ける第1の入力と前記等差値を受ける第2の入力とを有 する第1のミキサと、 前記第1のミキサの出力を受ける入力とパラメータMをパラメータNで除算し た商(ここでMおよびNは整数であり、MはNに対する素数)を受ける第2の入 力とを有する第2のミキサと、 前記第2のミキサの出力と関連づけられ、前記第2のミキサから第1のビット および第2のビットを抽出する抽出器と、 抽出された前記第1のビットおよび第2のビットをI符号およびQ符号に変換 する手段と を含む装置。 12.前記等差数列数値を出力する手段およびその等差数列数値の等差値を出力 する手段が少なくとも一つのシフトレジスタを含む請求項11記載の装置。 13.前記第1のビットが前記第2のミキサの最下位から第5のビットであり、 前記第2のビットが前記第2のミキサの最下位から第6のビットである請求項1 1記載の装置。 14.前記I符号およびQ符号を拡散器に出力する請求項11記載の装置。 15.前記I符号およびQ符号を逆拡散器に出力する請求項11記載の装置。 16.複素4相符号分割多重接続(CDMA)符号を発生する方法であって、 (a)パラメータMおよび処理利得Nを、それぞれが整数であってMがNに対す る素数になるように選ぶ過程と、 (b)商を生ずるように前記処理利得Nを前記パラメータMで除算する過程と、 (c)前記商を等差数列数値およびその等差数列の等差値と混合して混合出力を 生ずる過程と、 (d)前記混合出力から第1のビットおよび第2のビットを抽出する過程と、 (e)抽出した前記第1のビットおよび第2のビットからIデータおよびQデー タを発生する過程と、 (f)前記IデータおよびQデータを出力する過程と、 (g)前記過程(c)乃至(f)を繰り返す過程と を含む方法。 17.前記第1のビットが前記ミキサからの最下位から第5のビットであり、前 記第2のビットが前記ミキサからの最下位から第6のビットである請求項16記 載の方法。 18.前記IデータおよびQデータを拡散器に出力する請求項16記載の方法。 19.前記IデータおよびQデータを逆拡散器に出力する請求項16記載の方法 。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/956,808 US6026117A (en) | 1997-10-23 | 1997-10-23 | Method and apparatus for generating complex four-phase sequences for a CDMA communication system |
US08/956,808 | 1997-10-23 | ||
PCT/US1998/010199 WO1999021299A1 (en) | 1997-10-23 | 1998-05-20 | Method and apparatus for generating complex four-phase sequences for a cdma communication system |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2001501798A true JP2001501798A (ja) | 2001-02-06 |
JP3884776B2 JP3884776B2 (ja) | 2007-02-21 |
Family
ID=25498721
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP52396999A Expired - Fee Related JP3884776B2 (ja) | 1997-10-23 | 1998-05-20 | Cdma通信システム用の複素4相系列発生方法 および発生装置 |
Country Status (13)
Country | Link |
---|---|
US (8) | US6026117A (ja) |
EP (2) | EP1489761B1 (ja) |
JP (1) | JP3884776B2 (ja) |
KR (1) | KR100545502B1 (ja) |
CN (2) | CN1131609C (ja) |
AT (2) | ATE358364T1 (ja) |
AU (1) | AU7497398A (ja) |
CA (1) | CA2272864C (ja) |
DE (3) | DE69837452T2 (ja) |
DK (1) | DK0965188T3 (ja) |
ES (2) | ES2282768T3 (ja) |
HK (1) | HK1025690A1 (ja) |
WO (1) | WO1999021299A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7324581B2 (en) | 2002-12-13 | 2008-01-29 | Lg Electronics Inc. | Apparatus for mapping and spreading data symbols in mobile communication system |
JP2008141747A (ja) * | 2002-11-12 | 2008-06-19 | Ricoh Co Ltd | 超広帯域通信用受信機および超広帯域通信用の再生データ生成方法および、超広帯域通信システム |
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US6385264B1 (en) * | 1999-06-08 | 2002-05-07 | Qualcomm Incorporated | Method and apparatus for mitigating interference between base stations in a wideband CDMA system |
KR100404180B1 (ko) * | 1999-07-06 | 2003-11-03 | 엘지전자 주식회사 | 통신시스템에서의 기지국 신호 복조 장치 |
US20020031166A1 (en) * | 2000-01-28 | 2002-03-14 | Ravi Subramanian | Wireless spread spectrum communication platform using dynamically reconfigurable logic |
JP3917864B2 (ja) * | 2000-03-09 | 2007-05-23 | 富士通株式会社 | 疑似ランダム信号生成方法及びその装置 |
DE10036372A1 (de) * | 2000-07-18 | 2002-01-31 | Univ Berlin Tech | Sender, Empfänger sowie Sender- und Empfängeranordnung |
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US7203474B2 (en) * | 2001-10-24 | 2007-04-10 | Rohm Co., Ltd. | Receiver system |
AU2002250774A1 (en) * | 2002-03-22 | 2003-10-08 | Linkair Communications, Inc. | A coding method to create general spread spectrum sequence with zero correlation window |
JP4057467B2 (ja) * | 2002-11-12 | 2008-03-05 | 株式会社リコー | 超広帯域通信用受信機および超広帯域通信用の再生データ生成方法 |
EP1496371A1 (en) * | 2003-07-07 | 2005-01-12 | Mitsubishi Electric Information Technology Centre Europe B.V. | Generation of packets of waveforms |
US8363704B1 (en) | 2003-07-24 | 2013-01-29 | Rayburn David C | Method of transmitting information using a bandwidth limited communications channel |
US20060013332A1 (en) * | 2004-07-16 | 2006-01-19 | Rayburn David C | Method of sending information using superresolution to didtinguish overlapping symbols |
US20080317142A1 (en) * | 2005-07-29 | 2008-12-25 | Qualcomm Incorporated | System and method for frequency diversity |
US20070081484A1 (en) * | 2004-07-29 | 2007-04-12 | Wang Michael M | Methods and apparatus for transmitting a frame structure in a wireless communication system |
US8391410B2 (en) | 2004-07-29 | 2013-03-05 | Qualcomm Incorporated | Methods and apparatus for configuring a pilot symbol in a wireless communication system |
US9246728B2 (en) | 2004-07-29 | 2016-01-26 | Qualcomm Incorporated | System and method for frequency diversity |
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US9391751B2 (en) * | 2005-07-29 | 2016-07-12 | Qualcomm Incorporated | System and method for frequency diversity |
US9042212B2 (en) | 2005-07-29 | 2015-05-26 | Qualcomm Incorporated | Method and apparatus for communicating network identifiers in a communication system |
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-
1997
- 1997-10-23 US US08/956,808 patent/US6026117A/en not_active Expired - Lifetime
-
1998
- 1998-05-20 CN CN98801378A patent/CN1131609C/zh not_active Expired - Fee Related
- 1998-05-20 AU AU74973/98A patent/AU7497398A/en not_active Abandoned
- 1998-05-20 ES ES04018352T patent/ES2282768T3/es not_active Expired - Lifetime
- 1998-05-20 CN CNA2003101044210A patent/CN1496045A/zh active Pending
- 1998-05-20 CA CA002272864A patent/CA2272864C/en not_active Expired - Fee Related
- 1998-05-20 EP EP04018352A patent/EP1489761B1/en not_active Expired - Lifetime
- 1998-05-20 KR KR1019997004487A patent/KR100545502B1/ko not_active IP Right Cessation
- 1998-05-20 AT AT04018352T patent/ATE358364T1/de not_active IP Right Cessation
- 1998-05-20 DE DE69837452T patent/DE69837452T2/de not_active Expired - Lifetime
- 1998-05-20 DK DK98922420T patent/DK0965188T3/da active
- 1998-05-20 ES ES98922420T patent/ES2138949T3/es not_active Expired - Lifetime
- 1998-05-20 EP EP98922420A patent/EP0965188B9/en not_active Expired - Lifetime
- 1998-05-20 DE DE69825427T patent/DE69825427T2/de not_active Expired - Lifetime
- 1998-05-20 AT AT98922420T patent/ATE272917T1/de not_active IP Right Cessation
- 1998-05-20 JP JP52396999A patent/JP3884776B2/ja not_active Expired - Fee Related
- 1998-05-20 WO PCT/US1998/010199 patent/WO1999021299A1/en active IP Right Grant
- 1998-05-20 DE DE0965188T patent/DE965188T1/de active Pending
-
1999
- 1999-12-27 US US09/472,348 patent/US6337875B1/en not_active Expired - Lifetime
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2000
- 2000-06-19 HK HK00103672A patent/HK1025690A1/xx not_active IP Right Cessation
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2001
- 2001-11-13 US US10/011,113 patent/US6606344B2/en not_active Expired - Fee Related
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2002
- 2002-02-04 US US10/067,082 patent/US6597726B2/en not_active Expired - Fee Related
- 2002-02-04 US US10/066,860 patent/US6614833B2/en not_active Expired - Fee Related
- 2002-02-04 US US10/066,968 patent/US6731671B2/en not_active Expired - Fee Related
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2003
- 2003-08-08 US US10/637,463 patent/US7164705B2/en not_active Expired - Fee Related
-
2004
- 2004-02-12 US US10/777,369 patent/US20050002443A1/en not_active Abandoned
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008141747A (ja) * | 2002-11-12 | 2008-06-19 | Ricoh Co Ltd | 超広帯域通信用受信機および超広帯域通信用の再生データ生成方法および、超広帯域通信システム |
JP4571178B2 (ja) * | 2002-11-12 | 2010-10-27 | 株式会社リコー | 超広帯域通信用受信機および超広帯域通信用の再生データ生成方法および、超広帯域通信システム |
US7324581B2 (en) | 2002-12-13 | 2008-01-29 | Lg Electronics Inc. | Apparatus for mapping and spreading data symbols in mobile communication system |
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