JP4440934B2 - 複数搬送波通信システム向けのピーク対平均電力比を低減するシステム及び方法 - Google Patents
複数搬送波通信システム向けのピーク対平均電力比を低減するシステム及び方法 Download PDFInfo
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- JP4440934B2 JP4440934B2 JP2006536684A JP2006536684A JP4440934B2 JP 4440934 B2 JP4440934 B2 JP 4440934B2 JP 2006536684 A JP2006536684 A JP 2006536684A JP 2006536684 A JP2006536684 A JP 2006536684A JP 4440934 B2 JP4440934 B2 JP 4440934B2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2614—Peak power aspects
Description
Claims (9)
- 複数搬送波通信システムにおいて、データを送信する方法であって:
(a)複数搬送波通信システムで送信するデータを収集する工程;
(b)データを2以上の他とは異なる系列に従って系列化し、2以上のそれぞれの系列化されたデータ信号を生成する工程;
(c)前記系列化されたデータ信号の各々で複数搬送波通信信号を変調し、2以上の変調されたデータ系列を形成する工程;
(d)前記2以上の変調されたデータ系列のうちの1つを該変調されたデータ系列のPAPRに基づいて選択する工程であり、
(d1)前記2以上の変調されたデータ系列の各々のPAPRを測定し、
(d2)前記2以上の変調されたデータ系列の各々のPAPRの値を所定の閾値と比較し、且つ
(d3)前記2以上の変調されたデータ系列から、前記所定の閾値より低いPAPRの値を有する変調されたデータ系列を選択する、
ことよって選択する工程;
(e)選択された変調されたデータ系列に、前記2以上の他とは異なる系列のうちの対応する1つに関するデータマップを付加する工程;
(f)閾値帯域の外側の振幅ピーク群を除去するよう、前記選択された変調されたデータ系列を、付加された前記データマップとともにフィルター処理し、それによってフィルター処理した信号を作成する、フィルター処理する工程;及び
(g)前記フィルター処理した信号を、前記複数搬送波通信システムを用いて送信する工程;
を有する方法。 - 前記フィルター処理する工程が更に、前記データマップが付加された前記選択された変調されたデータ系列の標本群を閾値と比較すること、及び該閾値を上回る標本群の振幅を小さくすることを有する、請求項1に記載の方法。
- 前記標本群と比較される前記閾値を上回る前記標本群に近接する標本群の振幅を小さくする工程をさらに有する、請求項2に記載の方法。
- データを送信するための複数搬送波通信システムにおいて、送信機に必要な電力を削減するデータ信号を形成するための方法であって:
(a)複数搬送波通信システムで送信するデータを収集する工程;
(b)データを2以上の他とは異なる系列に従って系列化し、2以上のそれぞれの系列化されたデータ信号を生成する工程;
(c)前記系列化されたデータ信号の各々で複数搬送波通信信号を変調し、2以上の変調されたデータ系列を形成する工程;
(d)前記2以上の変調されたデータ系列のうちの1つを、送信するために、該変調されたデータ系列のPAPRに基づいて選択する工程であり、
(d1)前記2以上の変調されたデータ系列の各々のPAPRを測定し、
(d2)前記2以上の変調されたデータ系列の各々のPAPRの値を所定の閾値と比較し、且つ
(d3)前記2以上の変調されたデータ系列から、前記所定の閾値より低いPAPRの値を有する変調されたデータ系列を選択する、
ことよって選択する工程;
(e)選択された変調されたデータ系列に、前記2以上の他とは異なる系列のうちの対応する1つに関するデータマップを付加する工程;及び
(f)自身の送信のために必要な電力を削減するデータ信号を形成するために、前記データマップが付加された前記選択された変調されたデータ系列の、所定範囲の外側の振幅群を小さくする工程;
を有する方法。 - 前記振幅群を小さくする工程が更に、前記選択された変調されたデータ系列の標本群を閾値と比較すること、及び該閾値を上回る標本群の振幅を小さくすることを有する、請求項4に記載の方法。
- 前記振幅群を小さくする工程が更に、前記標本群と比較される前記閾値を上回る前記標本群に近接する標本群の振幅を小さくすることを有する、請求項5に記載の方法。
- 複数搬送波通信システムであって、複数の搬送波でデータを送信する送信機が:
複数搬送波通信で送信するデータを収集し、且つ
データを2以上の他とは異なる系列に従って系列化し、2以上のそれぞれの系列化されたデータ信号を生成する
ように構成されたデータ処理装置;
前記それぞれの系列化されたデータ信号の各々で複数搬送波通信信号を変調し、2以上の変調されたデータ系列を形成するように構成された変調器;
前記2以上の変調されたデータ系列のPAPRを測定し、
前記2以上の変調されたデータ系列のうちの1つを、送信のために、該変調されたデータ系列のPAPRに基づいて選択することを、
前記2以上の変調されたデータ系列の各々のPAPRの値を所定の閾値と比較し、且つ
前記2以上の変調されたデータ系列から、前記所定の閾値より低いPAPRの値を有する変調されたデータ系列を選択する
ことによって行い、且つ
選択された変調されたデータ系列に、前記2以上の他とは異なる系列のうちの対応する1つに関するデータマップを付加する
ように構成された処理装置;
前記データマップが付加された前記選択された変調されたデータ系列の、所定範囲の外側の振幅群を小さくするように構成された振幅フィルター;
を有する、システム。 - 前記振幅フィルターがFIRフィルターである、請求項7に記載のシステム。
- 前記振幅フィルターがIIRフィルターである、請求項7に記載のシステム。
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US10/690,613 US7639747B2 (en) | 2003-10-23 | 2003-10-23 | System and method for reducing peak-to-average power ratio for multi-carrier communication systems |
PCT/US2004/034276 WO2005043853A1 (en) | 2003-10-23 | 2004-10-18 | System and method for reducing peak-to-average power ratio for multi-carrier communication systems |
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JP2007509579A JP2007509579A (ja) | 2007-04-12 |
JP4440934B2 true JP4440934B2 (ja) | 2010-03-24 |
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JP2006536684A Expired - Fee Related JP4440934B2 (ja) | 2003-10-23 | 2004-10-18 | 複数搬送波通信システム向けのピーク対平均電力比を低減するシステム及び方法 |
Country Status (8)
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US (4) | US7639747B2 (ja) |
EP (1) | EP1676407B1 (ja) |
JP (1) | JP4440934B2 (ja) |
KR (1) | KR100866002B1 (ja) |
CN (1) | CN1871828A (ja) |
CA (1) | CA2542153C (ja) |
TW (1) | TWI254538B (ja) |
WO (1) | WO2005043853A1 (ja) |
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2003
- 2003-10-23 US US10/690,613 patent/US7639747B2/en active Active
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2004
- 2004-10-18 KR KR1020067007470A patent/KR100866002B1/ko active IP Right Grant
- 2004-10-18 CN CNA2004800311043A patent/CN1871828A/zh active Pending
- 2004-10-18 CA CA2542153A patent/CA2542153C/en not_active Expired - Fee Related
- 2004-10-18 EP EP04795439.1A patent/EP1676407B1/en active Active
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- 2004-10-18 WO PCT/US2004/034276 patent/WO2005043853A1/en active Application Filing
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TW200536315A (en) | 2005-11-01 |
CN1871828A (zh) | 2006-11-29 |
KR20060073638A (ko) | 2006-06-28 |
US20100020897A1 (en) | 2010-01-28 |
EP1676407B1 (en) | 2014-08-20 |
US20120114074A1 (en) | 2012-05-10 |
TWI254538B (en) | 2006-05-01 |
US7639747B2 (en) | 2009-12-29 |
KR100866002B1 (ko) | 2008-10-29 |
WO2005043853A1 (en) | 2005-05-12 |
CA2542153C (en) | 2010-12-07 |
US7822136B2 (en) | 2010-10-26 |
US8135081B2 (en) | 2012-03-13 |
CA2542153A1 (en) | 2005-05-12 |
EP1676407A1 (en) | 2006-07-05 |
EP1676407A4 (en) | 2008-01-02 |
US20050089116A1 (en) | 2005-04-28 |
US8442137B2 (en) | 2013-05-14 |
JP2007509579A (ja) | 2007-04-12 |
US20110044403A1 (en) | 2011-02-24 |
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