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1. 发明公开

EP0637139A1 METHOD FOR REMOVING INTERFERENCE WAVE, RECEIVER AND COMMUNICATION SYSTEM WHICH USE THE METHOD 失效
标题翻译： VERFAHREN UND VORRICHTUNG ZUR REDUKTION VONSTÖRWELLENEINES KOMMUNIKATIONSSYSTEMS。
公开(公告)号：EP0637139A1
公开(公告)日：1995-02-01
申请号：EP94904334.3
申请日：1994-01-18
申请人： NTT MOBILE COMMUNICATIONS NETWORK INC.
发明人： YOSHINO, Hitoshi , FUKAWA, Kazuhiko , SUZUKI, Hiroshi
IPC分类号： H04B1/10
CPC分类号： H04L25/03305 , H04B1/123 , H04L25/025 , H04L25/03292 , H04L25/03331
摘要： A state estimator (40) generates a plurality of candidates of estimated desired signal sequences corresponding to the transitions of state of desired signals estimated to be received, and a plurality of candidates of estimated undesired signal sequences corresponding to the transitions of state of undesired signals sequentially. The candidates are sent to a desired signal estimator (10) and a undesired signal estimator (20), respectively. In accordance with the conversion parameters set from a channel parameter estimator (50), the estimators (10 and 20) generate an estimated desired signal and an estimated undesired signal by use of the respective candidates. An error estimator (30) subtracts a signal of the sum of these signals from the received signal and generates an estimated error signal ε. The state estimator (40) estimates estimated error of desired signal sequences and undesired signal sequences with respect to the generated sequence candidates.
摘要翻译：状态估计器（40）产生与估计要接收的期望信号的状态的转变相对应的估计的期望信号序列的多个候选，以及与期望信号的状态的转变相对应的估计的不需要信号序列的多个候选。候选者分别被发送到期望的信号估计器（10）和不需要的信号估计器（20）。根据从信道参数估计器（50）设置的转换参数，估计器（10和20）通过使用相应候选者生成估计的期望信号和估计的不期望信号。误差估计器（30）从接收信号中减去这些信号之和的信号，并产生估计的误差信号ε。状态估计器（40）针对所生成的序列候选来估计所需信号序列和不期望的信号序列的估计误差。

2. 发明公开

EP0684708A1 ADAPTIVE EQUALIZER 失效
标题翻译： ADAPTIVER ENTZERRER。
公开(公告)号：EP0684708A1
公开(公告)日：1995-11-29
申请号：EP95902947.1
申请日：1994-12-14
申请人： NTT MOBILE COMMUNICATIONS NETWORK INC.
发明人： FUKAWA, Kazuhiko, A102 goushitsu , YOSHINO, Hitoshi , SUZUKI, Hiroshi
IPC分类号： H04B7/005 , H04L27/01 , H04B1/76
CPC分类号： H04L25/03273
摘要： Base-band signals obtained by asynchronously detecting received signals are sampled and the signals, are written in a buffer memory (11) as series of base-band signals samples. A most likelihood sequence estimating sec, tion (15) generates a desired symbol sequence corresponding to the samples read from the memory (11) and supplies the symbol sequence to a transversal filter (18) having characteristics esti. mated from the impulse response of the transmission line at the timings of the samples. A phase error detecting section (23) successively detects the phase errors between estimated received signals obtained and corresponding base-band signal samples. An offset correcting signal generating section (22) calculates an estimated offset angular frequency Δω e from the phase errors, generates an offset correcting signal having an angular frequency in the reverse direction of rotation, whose absolute value is equal to that of the estimated offset angular frequency Δω e , and supplies the offset correcting signal to a multiplier (21) for correction. The multiplier (21) corrects the offset angular frequency so as to cancel the angular frequency offset by multiplying the samples by the offset correcting signal. A subtractor (14) finds the difference between the corrected samples and estimated signals received from the transversal filter as estimated errors. The estimating section (15) finds the most likelihood information from the estimated errors and discriminates signals by using a most likelihood sequence estimating algorithm based on the most likelihood information.
摘要翻译：通过异步检测接收信号获得的基带信号被采样，并将信号作为一系列基带信号样本写入缓冲存储器（11）。估计秒（15）的最可能序列产生对应于从存储器（11）读取的样本的期望符号序列，并将符号序列提供给具有特征估计的横向滤波器（18）。在样本的定时从传输线的脉冲响应交配。相位误差检测部（23）连续检测所获得的估计接收信号与对应的基带信号样本之间的相位误差。偏移校正信号生成部（22）根据相位误差来计算估计的偏移角频率ΔTATA，生成具有反向旋转方向的角频率的偏移校正信号，其绝对值与估计偏移量的绝对值相等角度频率ΔTATA，并且将偏移校正信号提供给用于校正的乘法器（21）。乘法器（21）校正偏移角频率，以通过将采样乘以偏移校正信号来消除角频率偏移。减法器（14）找出校正样本与从横向滤波器接收的估计信号之间的差作为估计误差。估计部分（15）通过使用基于最可能信息的最可能序列估计算法从所估计的误差中找出最可能信息，并鉴别信号。

3. 发明授权

EP0684708B1 ADAPTIVE EQUALIZER 失效
标题翻译：自适应均衡器
公开(公告)号：EP0684708B1
公开(公告)日：2005-10-26
申请号：EP95902947.1
申请日：1994-12-14
申请人： NTT MOBILE COMMUNICATIONS NETWORK INC.
发明人： FUKAWA, Kazuhiko, A102 goushitsu , YOSHINO, Hitoshi , SUZUKI, Hiroshi
IPC分类号： H04L25/03 , H04L27/233
CPC分类号： H04L25/03273

4. 发明授权

EP0637139B1 METHOD FOR REMOVING INTERFERENCE WAVE, RECEIVER AND COMMUNICATION SYSTEM WHICH USE THE METHOD 失效
标题翻译：方法和设备减少干扰波的通信系统
公开(公告)号：EP0637139B1
公开(公告)日：2003-04-09
申请号：EP94904334.3
申请日：1994-01-18
申请人： NTT MOBILE COMMUNICATIONS NETWORK INC.
发明人： YOSHINO, Hitoshi , FUKAWA, Kazuhiko , SUZUKI, Hiroshi
IPC分类号： H04B1/10 , H04B1/12 , H04B7/005
CPC分类号： H04L25/03305 , H04B1/123 , H04L25/025 , H04L25/03292 , H04L25/03331

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