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    • 7. 发明专利
    • 無線通信系統用簡易及強韌數位碼追蹤迴路 SIMPLE AND ROBUST DIGITAL CODE TRACKING LOOP FOR WIRELESS COMMUNICATION SYSTEMS
    • 无线通信系统用简易及强韧数码码追踪回路 SIMPLE AND ROBUST DIGITAL CODE TRACKING LOOP FOR WIRELESS COMMUNICATION SYSTEMS
    • TWI324861B
    • 2010-05-11
    • TW095115510
    • 2003-04-29
    • 內數位科技公司
    • 彬 黎
    • H04B
    • H04B1/7085H04B1/7115H04B1/7117H04B2001/70706
    • 一種用於在無線多路徑衰退頻道上所傳輸展頻信號之多路徑成份之時間追蹤之簡易及強韌CTL。一數位追蹤迴路包括藉由使用一擬似雜訊序列以去擴早及晚資料樣本之實施,一誤差信號輸出由該去擴器產生,以及複數準時,早及晚樣本,被提供為該誤差信號之一資料速率之一部份之一控制信號之一資料速率用之調整。 A simple and robust CTL is used for time tracking of multipath components of a spread spectrum signal transmitted over a wireless multipath fading channel. A digital code-tracking loop includes the implementations of dispreading early and late data samples by use of a pseudo noise sequence, an error signal output generated by the dispreading, and adjustment for a plurality of on-time, early and late samples, a data rate of a control signal provided as a fractional proportion of a data rate of error signals. 【創作特點】 依據本發明,為在無線多路徑衰退頻道上傳輸之展頻信號之多路徑成份之時間追蹤而使用一種簡單及強韌的碼追蹤迴路(code-tracking loop,CTL)。該CTL包括使用一擬似雜訊(pseudo noise)序列對早及晚資料樣本去擴,藉由去擴輸出一誤差信號,調整複數準時,早及晚樣本,以及決定做為誤差信號之資料速率之一分數部份之一控制信號的資料速率。該CTL具有實施的簡化結構。一聯合CTL也被揭示用以於二多路徑彼此非常接近時消除二多路徑之間的干擾。
    • 一种用于在无线多路径衰退频道上所传输展频信号之多路径成份之时间追踪之简易及强韧CTL。一数码追踪回路包括借由使用一拟似噪声串行以去扩早及晚数据样本之实施,一误差信号输出由该去扩器产生,以及复数准时,早及晚样本,被提供为该误差信号之一数据速率之一部份之一控制信号之一数据速率用之调整。 A simple and robust CTL is used for time tracking of multipath components of a spread spectrum signal transmitted over a wireless multipath fading channel. A digital code-tracking loop includes the implementations of dispreading early and late data samples by use of a pseudo noise sequence, an error signal output generated by the dispreading, and adjustment for a plurality of on-time, early and late samples, a data rate of a control signal provided as a fractional proportion of a data rate of error signals. 【创作特点】 依据本发明,为在无线多路径衰退频道上载输之展频信号之多路径成份之时间追踪而使用一种简单及强韧的码追踪回路(code-tracking loop,CTL)。该CTL包括使用一拟似噪声(pseudo noise)串行对早及晚数据样本去扩,借由去扩输出一误差信号,调整复数准时,早及晚样本,以及决定做为误差信号之数据速率之一分数部份之一控制信号的数据速率。该CTL具有实施的简化结构。一联合CTL也被揭示用以于二多路径彼此非常接近时消除二多路径之间的干扰。
    • 8. 发明专利
    • 以專用實體頻道導頻符號估算信噪比方法及裝置 METHOD AND APPARATUS FOR ESTIMATING SIGNAL-TO-NOISE RATIO BASED ON DEDICATED PHYSICAL CHANNEL PILOT SYMBOLS
    • 以专用实体频道导频符号估算信噪比方法及设备 METHOD AND APPARATUS FOR ESTIMATING SIGNAL-TO-NOISE RATIO BASED ON DEDICATED PHYSICAL CHANNEL PILOT SYMBOLS
    • TWI320641B
    • 2010-02-11
    • TW095115812
    • 2006-05-03
    • 內數位科技公司
    • 彬 黎楊陸葛列格里 史特恩貝格
    • H04B
    • H04L1/20H04B2201/70701
    • 本發明是關於一種根據在一無線通訊系統中的專用實體頻道(DPCH)導頻符號來估算信號雜訊比(SNR)之方法和裝置。一個接收器接收一個DPCH傳輸,且一個解擴展器解擴展該接收的DPCH傳輸。一個選擇器由該解擴展DPCH傳輸中選擇導頻符號。一個信號功率估算器根據該導頻符號以估算該信號功率,且一個雜訊功率估算器根據該接收的DPCH傳輸以估算雜訊功率。一個SNR估算器根據該信號功率估算及該雜訊功率估算以估算SNR。該雜訊功率估算器可僅根據導頻符號或是根據導頻符號及非導頻符號以計算該雜訊功率估算。該DPCH傳輸可因傳輸多樣性的目的而使用一個以上的天線所傳輸。 The present invention is related to a method and apparatus for estimating signal-to-noise ratio (SNR) based on dedicated physical channel (DPCH) pilot symbols in a wireless communication system. A receiver receives a DPCH transmission and a despreader despreads the received DPCH transmission. A selector selects pilot symbols in the despread DPCH transmission. A signal power estimator estimates signal power based on the pilot symbols, and a noise power estimator estimates noise power based on the received DPCH transmission. A SNR estimator estimates an SNR based on the signal power estimation and the noise power estimation. The noise power estimator may calculate the noise power estimation either based only on pilot symbols or based on both pilot symbols and non-pilot symbols. The DPCH transmission may be transmitted using more than one antenna for transmit diversity. 【創作特點】 本發明是關於一種根據在一無線通訊系統中的DPCH導頻符號,來估算SNR之方法和裝置。一個接收器接收一個DPCH傳輸,且一個解擴展器解擴展該接收的DPCH傳輸。一個選擇器由該解擴展DPCH傳輸中選擇導頻符號。一個信號功率估算器根據該導頻符號估算該信號功率,且一個雜訊功率估算器根據該接收的DPCH傳輸估算該雜訊功率。一個SNR估算器根據該信號功率估算及該雜訊功率估算以估算SNR。該雜訊功率估算器可僅根據導頻符號或是根據導頻符號及非導頻符號計算該雜訊功率估算。該DPCH傳輸可因傳輸多樣性的目的而使用一個以上的天線傳輸。
    • 本发明是关于一种根据在一无线通信系统中的专用实体频道(DPCH)导频符号来估算信号噪声比(SNR)之方法和设备。一个接收器接收一个DPCH传输,且一个解扩展器解扩展该接收的DPCH传输。一个选择器由该解扩展DPCH传输中选择导频符号。一个信号功率估算器根据该导频符号以估算该信号功率,且一个噪声功率估算器根据该接收的DPCH传输以估算噪声功率。一个SNR估算器根据该信号功率估算及该噪声功率估算以估算SNR。该噪声功率估算器可仅根据导频符号或是根据导频符号及非导频符号以计算该噪声功率估算。该DPCH传输可因传输多样性的目的而使用一个以上的天线所传输。 The present invention is related to a method and apparatus for estimating signal-to-noise ratio (SNR) based on dedicated physical channel (DPCH) pilot symbols in a wireless communication system. A receiver receives a DPCH transmission and a despreader despreads the received DPCH transmission. A selector selects pilot symbols in the despread DPCH transmission. A signal power estimator estimates signal power based on the pilot symbols, and a noise power estimator estimates noise power based on the received DPCH transmission. A SNR estimator estimates an SNR based on the signal power estimation and the noise power estimation. The noise power estimator may calculate the noise power estimation either based only on pilot symbols or based on both pilot symbols and non-pilot symbols. The DPCH transmission may be transmitted using more than one antenna for transmit diversity. 【创作特点】 本发明是关于一种根据在一无线通信系统中的DPCH导频符号,来估算SNR之方法和设备。一个接收器接收一个DPCH传输,且一个解扩展器解扩展该接收的DPCH传输。一个选择器由该解扩展DPCH传输中选择导频符号。一个信号功率估算器根据该导频符号估算该信号功率,且一个噪声功率估算器根据该接收的DPCH传输估算该噪声功率。一个SNR估算器根据该信号功率估算及该噪声功率估算以估算SNR。该噪声功率估算器可仅根据导频符号或是根据导频符号及非导频符号计算该噪声功率估算。该DPCH传输可因传输多样性的目的而使用一个以上的天线传输。