JP5675697B2 - 適応イコライザーを有した通信受信機 - Google Patents
適応イコライザーを有した通信受信機 Download PDFInfo
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- JP5675697B2 JP5675697B2 JP2012113298A JP2012113298A JP5675697B2 JP 5675697 B2 JP5675697 B2 JP 5675697B2 JP 2012113298 A JP2012113298 A JP 2012113298A JP 2012113298 A JP2012113298 A JP 2012113298A JP 5675697 B2 JP5675697 B2 JP 5675697B2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
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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
- H04B1/7105—Joint detection techniques, e.g. linear detectors
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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
- H04B1/76—Pilot transmitters or receivers for control of transmission or for equalising
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
- H04L25/03019—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception
- H04L25/03038—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception with a non-recursive structure
- H04L25/03044—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception with a non-recursive structure using fractionally spaced delay lines or combinations of fractionally integrally spaced taps
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
-
- 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
- H04B2201/70701—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation featuring pilot assisted reception
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L2025/03433—Arrangements for removing intersymbol interference characterised by equaliser structure
- H04L2025/03439—Fixed structures
- H04L2025/03445—Time domain
- H04L2025/03471—Tapped delay lines
- H04L2025/03509—Tapped delay lines fractionally spaced
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L2025/03433—Arrangements for removing intersymbol interference characterised by equaliser structure
- H04L2025/03439—Fixed structures
- H04L2025/03522—Frequency domain
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L2025/03592—Adaptation methods
- H04L2025/03598—Algorithms
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L2025/03592—Adaptation methods
- H04L2025/03598—Algorithms
- H04L2025/03611—Iterative algorithms
- H04L2025/03617—Time recursive algorithms
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0224—Channel estimation using sounding signals
- H04L25/0228—Channel estimation using sounding signals with direct estimation from sounding signals
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Quality & Reliability (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Mobile Radio Communication Systems (AREA)
- Noise Elimination (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Dc Digital Transmission (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
Description
Claims (36)
- 下記を具備する、無線通信システムにおいて、送信された信号を推定する方法:
パイロットチャネルおよび少なくとも1つの他のチャネルを含む無線信号を受信する;
イコライザーおよび前記受信された無線信号を用いて送信された信号を推定する、ここにおいて、前記イコライザーは、前記受信された無線信号から推定された推定パイロットを使用する適応アルゴリズムの使用を介して調整可能な複数のタップを有したフィルターを含み、前記複数のタップは、パイロットシンボル間隔についてN回前記適応アルゴリズムを介して更新され、ここで、Nは正の整数であり、Nの値は前記無線通信システムにおけるデバイスの速度に基づいて変化し、前記パイロットチャネルは前記少なくとも1つの他のチャネルを用いて送信されたものである;
前記推定されたパイロットを抽出する;
前記推定されたパイロットを前記適応アルゴリズムに供給する;
前記適応アルゴリズムの使用を介して前記複数のタップを調整する。 - 前記適応アルゴリズムは反復アルゴリズムである、請求項1に記載の方法。
- 前記パイロットチャネルは、符号分割多重である、請求項1に記載の方法。
- 前記無線信号はさらに直交チャネルおよび非直交チャネルを具備する、請求項3に記載の方法。
- 前記方法は移動局により実施される、請求項3に記載の方法。
- 前記方法は基地局で実施される、請求項3に記載の方法。
- 前記イコライザーは、有限インパルス応答(FIR)フィルターを具備する、請求項1に記載の方法。
- 前記イコライザーは無限インパルス応答(IIR)フィルターを具備する、請求項1に記載の方法。
- フィルタリングは、周波数領域で実行される、請求項1に記載の方法。
- 前記適応アルゴリズムは、前記タップを更新するために、パイロットシンボル間隔ごとに一度使用される、請求項1に記載の方法。
- 前記適応アルゴリズムは、新しいタップ値が収束するまで前記新しいタップ値に適応し続ける、請求項1に記載の方法。
- 前記適応アルゴリズムは、ある期間、新しいタップ値に適応し続ける、請求項1に記載の方法。
- 前記行為は並列に実行される、請求項1の方法。
- 前記タップはチップ期間に対して部分的に離間される、請求項1の方法。
- 前記タップは非等間隔である、請求項1に記載の方法。
- 前記パイロットチャネルは、連続的に送信される、請求項1に記載の方法。
- 前記パイロットチャネルは連続的に送信されない、請求項1に記載の方法。
- 前記少なくとも1つの他のチャネルは、連続的に送信される、請求項1に記載の方法。
- 前記少なくとも1つの他のチャネルは、連続的に送信されない、請求項1に記載の方法。
- 前記少なくとも1つの他のチャネルは、トラヒックチャネルを具備する、請求項1に記載の方法。
- 下記を具備する、装置が送信された信号を推定する無線通信システムに使用する装置:
パイロットチャネルおよび少なくとも1つの他のチャネルを具備する無線信号を受信するための受信機に結合された少なくとも1つのアンテナ;
前記送信された信号を推定するイコライザー、ここにおいて、前記イコライザーは、前記受信された無線信号から推定された推定パイロットを使用する適応アルゴリズムの使用を介して調整可能な複数のタップを有したフィルターを含み、前記複数のタップは、パイロットシンボル間隔についてN回前記適応アルゴリズムを介して更新され、ここで、Nは正の整数であり、Nの値は前記無線通信システムにおけるデバイスの速度に基づいて変化し、前記パイロットチャネルは前記少なくとも1つの他のチャネルを用いて送信されたものである;
前記推定されたパイロットを抽出し、前記推定されたパイロットを前記適応アルゴリズムに供給するコンポーネント、ここにおいて、前記イコライザーは、前記適応アルゴリズムの使用を介して前記複数のタップを調整するために更に構成される。 - 前記適応アルゴリズムは、反復アルゴリズムである、請求項21に記載の装置。
- 前記イコライザーは、有限インパルス応答(FIR)フィルターを具備する、請求項21に記載の装置。
- 前記イコライザーは、無限インパルス応答(IIR)フィルターを具備する、請求項21に記載の装置。
- フィルタリングは、周波数領域で行われる、請求項21に記載の装置。
- 前記適応アルゴリズムは、新しいタップ値が収束するまで前記新しいタップ値に適応し続ける、請求項21に記載の装置。
- 前記パイロットチャネルは符号分割多重されている、請求項21に記載の装置。
- 下記を具備する、無線通信システムに使用する装置:
パイロットチャネルおよび少なくとも1つの他のチャネルを具備する無線信号を受信する手段;
イコライザーおよび前記受信された無線信号を用いて送信された信号を推定する手段、ここにおいて、前記イコライザーは、前記受信された無線信号から推定された推定パイロットを使用する適応アルゴリズムの使用を介して調整可能な複数のタップを有したフィルターを含み、前記複数のタップは、パイロットシンボル間隔についてN回前記適応アルゴリズムを介して更新され、ここで、Nは正の整数であり、Nの値は前記無線通信システムにおけるデバイスの速度に基づいて変化し、前記パイロットチャネルは前記少なくとも1つの他のチャネルを用いて送信されたものである;
前記推定されたパイロットを抽出する手段;
前記推定されたパイロットを前記適応アルゴリズムに供給する手段;
前記適応アルゴリズムの使用を介して前記複数のタップを調整する手段。 - 前記適応アルゴリズムは、反復アルゴリズムである、請求項28に記載の装置。
- 前記イコライザーは、有限インパルス応答(FIR)フィルターを具備する、請求項28に記載の装置。
- 前記イコライザーは、無限インパルス応答(IIR)フィルターを具備する、請求項28に記載の装置。
- フィルタリングは、周波数領域で行われる、請求項28に記載の装置。
- 前記イコライザーは、前記複数のタップが収束するまでの間だけ、前記複数のタップを調整するために更に構成される、請求項28に記載の装置。
- 前記パイロットチャネルは符号分割多重される、請求項28に記載の装置。
- 前記装置は移動局において具現化される、請求項28に記載の装置。
- 前記装置は基地局において具現化される、請求項28に記載の装置。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US10/368,920 | 2003-02-18 | ||
US10/368,920 US7272176B2 (en) | 2003-02-18 | 2003-02-18 | Communication receiver with an adaptive equalizer |
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JP2010075393A Division JP2010183618A (ja) | 2003-02-18 | 2010-03-29 | 適応イコライザーを有した通信受信機 |
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JP2012199959A JP2012199959A (ja) | 2012-10-18 |
JP5675697B2 true JP5675697B2 (ja) | 2015-02-25 |
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JP2006503653A Withdrawn JP2006518166A (ja) | 2003-02-18 | 2004-02-18 | 適応イコライザーを有した通信受信機 |
JP2010075393A Withdrawn JP2010183618A (ja) | 2003-02-18 | 2010-03-29 | 適応イコライザーを有した通信受信機 |
JP2012113298A Expired - Fee Related JP5675697B2 (ja) | 2003-02-18 | 2012-05-17 | 適応イコライザーを有した通信受信機 |
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JP2006503653A Withdrawn JP2006518166A (ja) | 2003-02-18 | 2004-02-18 | 適応イコライザーを有した通信受信機 |
JP2010075393A Withdrawn JP2010183618A (ja) | 2003-02-18 | 2010-03-29 | 適応イコライザーを有した通信受信機 |
Country Status (17)
Country | Link |
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US (2) | US7272176B2 (ja) |
EP (2) | EP1595376B1 (ja) |
JP (3) | JP2006518166A (ja) |
KR (2) | KR101122998B1 (ja) |
CN (2) | CN101969420B (ja) |
AT (1) | ATE483307T1 (ja) |
AU (2) | AU2004213989C1 (ja) |
BR (1) | BRPI0407570A (ja) |
CA (1) | CA2516183C (ja) |
DE (1) | DE602004029333D1 (ja) |
ES (1) | ES2350833T3 (ja) |
IL (2) | IL170145A (ja) |
MX (1) | MXPA05008764A (ja) |
RU (2) | RU2360371C2 (ja) |
TW (1) | TWI330965B (ja) |
UA (1) | UA92307C2 (ja) |
WO (1) | WO2004075498A1 (ja) |
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