JP2000517500A - マルチキャリア変調システムにおける平均電力対ピーク比の低減 - Google Patents
マルチキャリア変調システムにおける平均電力対ピーク比の低減Info
- Publication number
- JP2000517500A JP2000517500A JP10512225A JP51222598A JP2000517500A JP 2000517500 A JP2000517500 A JP 2000517500A JP 10512225 A JP10512225 A JP 10512225A JP 51222598 A JP51222598 A JP 51222598A JP 2000517500 A JP2000517500 A JP 2000517500A
- Authority
- JP
- Japan
- Prior art keywords
- information
- value
- signal
- carrier
- transmission
- 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
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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
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
- H04L27/3405—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power
- H04L27/3411—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power reducing the peak to average power ratio or the mean power of the constellation; Arrangements for increasing the shape gain of a signal set
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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
- H04L27/2602—Signal structure
-
- 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
-
- 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
- H04L27/2621—Reduction thereof using phase offsets between subcarriers
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Transmitters (AREA)
- Communication Control (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1.決定的で、かつ可逆的で、不明瞭でない表示規則により、送信側でデータ 情報を変更し、別の、情報が等価なシーケンスを発生し、これらシーケンスから 適切な送信信号のピーク値に関して好ましいシーケンスを選択し、このシーケン スを送信に使用する、デジタル送信方法における波高率を低減するための方法。 2.変換により元の情報信号から送信すべき信号を発生する、請求項1記載の 方法。 3.変換によりマルチキャリア送信手順を決定する、請求項2記載の方法。 4.変換により時間的に離散した信号から、バンド幅の効率のよい、時間的に 連続する信号を発生する、請求項2記載の方法。 5.任意に選択可能な値Pν (u)、u=1、....、Uを乗算することにより、 キャリア値Aμ,ν,μ=0、....、N−1から別の情報に等価的なシーケンス を形成する、請求項1、3または4記載の方法。 6.送信機と受信機との間で値Pυ (u)を確実に定められている、請求項5記 載の方法。 7.値Pν (u)の各々が送信機および受信機で同じあらかじめ設定された規則 に従うように、これら値Pν (u)を別々に決定する、請求項6記載の方法。 8.Pν (u)が複素数であり、この複素数の絶対値が1に等しい、|Pν (u)| である、請求項5、6または7記載の方法。 9.値Pν (u)の数uをサイド情報として受信機へ送る、請求項5〜8のいず れかに記載の方法。 10.受信機が受信シーケンスよりPν (u)の数字uを導出する、請求項5〜 9のいずれかに記載の方法。 11.情報を信号内で差分的に表示し、よって変更されたキャリアAμ,νPν (u) の各々が情報の増分量を構成し、この情報増分量から積分により最後に送 信すべき情報シーケンスを得る、請求項5〜10のいずれかに記載の方法。 12.キャリアブロックAμをV個のサブブロックAμ ( υ)ν=1に区分し、 これらサブブロックを部分送信シーケンスになるように別々に転送し、部分送信 シ ーケンスを最終的に組み合わせ、任意ファクターb1、....、bvにより最適態様 で情報が等価な送信シーケンスを形成する、請求項1〜4のいずれかに記載の方 法。 13.b1、....、bvが複素数の値を有し、この複素数の値の絶対値が|b1 |=..=|bv|=1である、請求項12記載の方法。 14.サブブロックのファクターb1、....、bvを適当な表示のサイド情報と して受信機へ送る、請求項12または13記載の方法。 15.受信機内のファクターb1、....、bvを受信周波数から別個に導出する 、請求項12または13記載の方法。 16.情報を信号内で周波数方向に絶対的ではなく差分的に表示し、サブブロ ック区分を適当な態様でこの目的のために選択する、請求項12または13記載 の方法。 17.キャリア値(Aμ)上にデジタル情報(NR)を表示するための表示デ バイス(MP)と、 キャリア値(Aμ)を任意の適当な値(Pν (u))で乗算するための手段と、 キャリア値を別の、情報が等価なシーケンスに変換するための手段(IDFT )と、 送信に使用されるピーク値に関し、好ましいシーケンスを選択するための手段 とを備えた、デジタル送信方法における波高率を低減するための装置。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19635813A DE19635813A1 (de) | 1996-09-04 | 1996-09-04 | Verfahren zur Reduktion des Spitzenwertfaktors bei digitalen Übertragungsverfahren |
DE19635813.2 | 1996-09-04 | ||
PCT/EP1997/004770 WO1998010567A1 (en) | 1996-09-04 | 1997-09-02 | Reduction of the peak to average power ratio in multicarrier modulation system |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2000517500A true JP2000517500A (ja) | 2000-12-26 |
JP3999271B2 JP3999271B2 (ja) | 2007-10-31 |
Family
ID=7804558
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP51222598A Expired - Lifetime JP3999271B2 (ja) | 1996-09-04 | 1997-09-02 | マルチキャリア変調システムにおける平均電力対ピーク比の低減 |
Country Status (9)
Country | Link |
---|---|
US (1) | US6125103A (ja) |
EP (1) | EP0925672A1 (ja) |
JP (1) | JP3999271B2 (ja) |
KR (1) | KR100346336B1 (ja) |
CN (1) | CN1222143C (ja) |
AU (1) | AU4620197A (ja) |
DE (1) | DE19635813A1 (ja) |
TW (1) | TW358272B (ja) |
WO (1) | WO1998010567A1 (ja) |
Cited By (6)
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WO2003081821A1 (fr) * | 2002-03-26 | 2003-10-02 | Matsushita Electric Industrial Co., Ltd. | Dispositif de transmission a porteuses multiples, et procede correspondant |
JP2005341054A (ja) * | 2004-05-25 | 2005-12-08 | Ntt Docomo Inc | 送信機および送信制御方法 |
JP2005341458A (ja) * | 2004-05-31 | 2005-12-08 | Fujitsu Ltd | Ofdm変調装置及びofdm変調方法 |
JP2007536875A (ja) * | 2004-06-25 | 2007-12-13 | サムスン エレクトロニクス カンパニー リミテッド | 直交周波数分割多元方式を用いる通信システムにおけるパイロット信号を送受信する装置及び方法 |
JP2008522560A (ja) * | 2004-12-02 | 2008-06-26 | ニュージャージー インスティテュート オブ テクノロジー | Paprの低減のための方法、及び/またはシステム |
JP2009540742A (ja) * | 2006-06-14 | 2009-11-19 | アギア システムズ インコーポレーテッド | サブシンボル処理を使用した直交周波数分割多重 |
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EP2745484A4 (en) * | 2012-01-12 | 2015-07-15 | Ericsson Telefon Ab L M | DEVICE AND METHOD FOR ADAPTIVE PHASE SHIFT |
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US5838732A (en) * | 1994-10-31 | 1998-11-17 | Airnet Communications Corp. | Reducing peak-to-average variance of a composite transmitted signal generated by a digital combiner via carrier phase offset |
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EP0735731B1 (en) * | 1995-03-31 | 2004-05-12 | Victor Company Of Japan, Limited | Multicarrier modulator demodulator, with arrangements for reducing peak power |
DE69535033T2 (de) * | 1995-07-11 | 2007-03-08 | Alcatel | Zuweisung von Kapazität bei OFDM |
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1996
- 1996-09-04 DE DE19635813A patent/DE19635813A1/de not_active Withdrawn
-
1997
- 1997-09-02 KR KR1019997001790A patent/KR100346336B1/ko not_active IP Right Cessation
- 1997-09-02 WO PCT/EP1997/004770 patent/WO1998010567A1/en not_active Application Discontinuation
- 1997-09-02 CN CNB971992932A patent/CN1222143C/zh not_active Expired - Lifetime
- 1997-09-02 JP JP51222598A patent/JP3999271B2/ja not_active Expired - Lifetime
- 1997-09-02 TW TW086112637A patent/TW358272B/zh active
- 1997-09-02 EP EP97944821A patent/EP0925672A1/en not_active Withdrawn
- 1997-09-02 AU AU46201/97A patent/AU4620197A/en not_active Abandoned
- 1997-09-03 US US08/922,394 patent/US6125103A/en not_active Expired - Lifetime
Cited By (8)
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WO2003081821A1 (fr) * | 2002-03-26 | 2003-10-02 | Matsushita Electric Industrial Co., Ltd. | Dispositif de transmission a porteuses multiples, et procede correspondant |
JP2005341054A (ja) * | 2004-05-25 | 2005-12-08 | Ntt Docomo Inc | 送信機および送信制御方法 |
JP2005341458A (ja) * | 2004-05-31 | 2005-12-08 | Fujitsu Ltd | Ofdm変調装置及びofdm変調方法 |
JP2007536875A (ja) * | 2004-06-25 | 2007-12-13 | サムスン エレクトロニクス カンパニー リミテッド | 直交周波数分割多元方式を用いる通信システムにおけるパイロット信号を送受信する装置及び方法 |
JP2008522560A (ja) * | 2004-12-02 | 2008-06-26 | ニュージャージー インスティテュート オブ テクノロジー | Paprの低減のための方法、及び/またはシステム |
JP4680264B2 (ja) * | 2004-12-02 | 2011-05-11 | ニュー ジャージー インスティチュート オブ テクノロジー | Paprの低減のための方法、及び/またはシステム |
US8040787B2 (en) | 2004-12-02 | 2011-10-18 | New Jersey Institute Of Technology | Method and/or system for reduction of PAPR |
JP2009540742A (ja) * | 2006-06-14 | 2009-11-19 | アギア システムズ インコーポレーテッド | サブシンボル処理を使用した直交周波数分割多重 |
Also Published As
Publication number | Publication date |
---|---|
KR100346336B1 (ko) | 2002-07-26 |
CN1244323A (zh) | 2000-02-09 |
JP3999271B2 (ja) | 2007-10-31 |
CN1222143C (zh) | 2005-10-05 |
EP0925672A1 (en) | 1999-06-30 |
WO1998010567A1 (en) | 1998-03-12 |
US6125103A (en) | 2000-09-26 |
AU4620197A (en) | 1998-03-26 |
KR20000068425A (ko) | 2000-11-25 |
TW358272B (en) | 1999-05-11 |
DE19635813A1 (de) | 1998-03-05 |
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