JP2011525729A - 適応的相関付け - Google Patents
適応的相関付け Download PDFInfo
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- JP2011525729A JP2011525729A JP2011512577A JP2011512577A JP2011525729A JP 2011525729 A JP2011525729 A JP 2011525729A JP 2011512577 A JP2011512577 A JP 2011512577A JP 2011512577 A JP2011512577 A JP 2011512577A JP 2011525729 A JP2011525729 A JP 2011525729A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/04—Speed or phase control by synchronisation signals
- H04L7/041—Speed or phase control by synchronisation signals using special codes as synchronising signal
- H04L7/042—Detectors therefor, e.g. correlators, state machines
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
- G06F17/10—Complex mathematical operations
- G06F17/15—Correlation function computation including computation of convolution operations
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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
- H04B1/7073—Synchronisation aspects
- H04B1/7075—Synchronisation aspects with code phase acquisition
- H04B1/70751—Synchronisation aspects with code phase acquisition using partial detection
- H04B1/70752—Partial correlation
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Abstract
Description
本発明はまた、コンピュータ・プログラム・プロダクト内に埋め込まれることができる。コンピュータ・プログラム・プロダクトは、本稿で記載された方法の実装を可能にするすべての特徴を有し、コンピュータ・システムにロードされたときに、これらの方法を実行できる。今のコンテキストにおけるコンピュータ・プログラムまたはアプリケーションは、情報処理機能をもつシステムに特定の機能を、直接的に、あるいはa)別の言語、コードまたは記法への変換;b)異なる物質形での再現、の一方または両方ののちに、実行させるよう意図された一組の命令の、任意の言語、コードまたは記法での任意の表現を意味する。さらに、上記の記述は、単に例として意図されているのであって、付属の請求項における記載によるほかはいかなる意味でも本発明を限定することは意図していない。
Claims (13)
- 受信信号のサンプルと内的に生成されたまたは記憶されているサンプル・シーケンスのサンプルとを相関付ける方法であって:
低解像度相関付けの第一の反復工程を実行する段階を含み、前記低解像度相関付けは:
受信信号から受信信号サンプルの第一のN個のセットを選択する段階と;
内的に生成されたまたは記憶されているサンプル・シーケンスから参照サンプルの第一のセットを選択する段階と;
受信信号サンプルの前記第一のN個のセットのそれぞれを並行して参照サンプルの前記第一のセットと相関付けして、その間に十分な相関が存在するかどうかを判定する段階とを含み、
受信信号サンプルの前記第一のN個のセットおよび参照サンプルの前記第一のセットが同数のサンプルを含む、
方法。 - 前記低解像度相関付けにおいて、受信信号サンプルの前記第一のN個のセットのうちの少なくとも一つと参照サンプルの前記第一のセットとの間に十分な相関が存在すると判定された場合に、より高い解像度の相関付けを実行する段階をさらに含む、請求項1記載の方法。
- 前記より高い解像度の相関付けは、(a)受信信号から受信信号サンプルの第二のN個のセットを選択する段階と、(b)前記内的に生成されたまたは記憶されているサンプル・シーケンスから参照サンプルの第二のセットを選択する段階とを含み、受信信号サンプルの前記第二のN個のセットおよび参照サンプルの前記第二のセットは同数のサンプルを含む、請求項2記載の方法。
- 受信信号サンプルの前記第二のN個のセットは、受信信号サンプルの前記第一のN個のセットよりも大きいことができるサンプル数を有する、請求項3記載の方法。
- 受信信号サンプルの前記第二のN個のセットは、受信信号サンプルの前記第一のN個のセットに含まれるサンプルに比較して、時間的に遅延されたサンプルを含む、請求項3記載の方法。
- 参照サンプルの前記第二のセットは、参照サンプルの前記第一のセットに含まれるサンプルに比較して、時間的に遅延されたサンプルを含む、請求項3記載の方法。
- 前記より高い解像度の相関付けはさらに、受信信号サンプルの前記第二のN個のセットのそれぞれを並行して参照サンプルの前記第二のセットと比較して、その間に十分な相関が存在するかどうかを判定する段階を含む、請求項3記載の方法。
- 受信信号サンプルの前記第二のN個のセットのうちの少なくとも一つと参照サンプルの前記第二のセットとの間に十分な相関が存在すると判定された場合に相関インデックス値を計算する段階をさらに含む、請求項7記載の方法。
- 前記より高い解像度の相関付けは、相関検証または独立な相関指標を計算するために、相関ピークに関し、前記低解像度参照サンプルと同じ相対遅延をもつサンプルの独立なセットに対して作用する、請求項3記載の方法。
- 受信信号サンプルの前記第一のN個のセットのうちの少なくとも一つと参照サンプルの前記第一のセットとの間に十分な相関が存在するのでないと判定された場合、前記低解像度相関付けの次の反復工程を実行する段階をさらに含む、請求項1記載の方法。
- 前記低解像度相関付けの前記次の反復工程は:受信信号から受信信号サンプルの第二のN個のセットを、前記内的に生成されたまたは記憶されているサンプル・シーケンスから参照サンプルの第二のセットを選択する段階を含み、受信信号サンプルの前記第二のN個のセットおよび参照サンプルの前記第二のセットは同数のサンプルを含む、請求項10記載の方法。
- 受信信号サンプルの前記第二のN個のセットは、受信信号サンプルの前記第一のN個のセットと同数のサンプルを含む、請求項11記載の方法。
- 受信信号サンプルの前記第二のN個のセットは、受信信号サンプルの前記第一のN個のセットに含まれるサンプルに比較して時間的に遅延されているサンプルを含む、請求項11記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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US12/131,386 US8064552B2 (en) | 2008-06-02 | 2008-06-02 | Adaptive correlation |
US12/131,386 | 2008-06-02 | ||
PCT/US2009/045916 WO2009149051A2 (en) | 2008-06-02 | 2009-06-02 | Adaptive correlation |
Publications (1)
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JP2011525729A true JP2011525729A (ja) | 2011-09-22 |
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JP2011512577A Pending JP2011525729A (ja) | 2008-06-02 | 2009-06-02 | 適応的相関付け |
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US (1) | US8064552B2 (ja) |
EP (1) | EP2294518B1 (ja) |
JP (1) | JP2011525729A (ja) |
KR (1) | KR101253870B1 (ja) |
CA (1) | CA2726448A1 (ja) |
WO (1) | WO2009149051A2 (ja) |
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CA2726448A1 (en) | 2009-12-10 |
US20090296860A1 (en) | 2009-12-03 |
KR101253870B1 (ko) | 2013-04-16 |
EP2294518B1 (en) | 2017-09-06 |
WO2009149051A3 (en) | 2011-04-28 |
KR20110028321A (ko) | 2011-03-17 |
WO2009149051A2 (en) | 2009-12-10 |
US8064552B2 (en) | 2011-11-22 |
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