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121. 发明授权

EP0701344B1 ADAPTIVE SPREAD SPECTRUM RECEIVER 失效
标题翻译：自适应扩频
公开(公告)号：EP0701344B1
公开(公告)日：2001-07-25
申请号：EP95907863.5
申请日：1995-02-09
申请人： NTT MOBILE COMMUNICATIONS NETWORK INC.
发明人： FUKAWA, Kazuhiko , SUZUKI, Hiroshi
IPC分类号： H04J13/04 , H04B1/707
CPC分类号： H04B1/7093 , H04B1/7115
摘要： A sampling signal SPS of a received signal which is subjected to spectrum spreading is inputted to matching filters 121 to 124 and is compressed back. A spreading code of a desired wave is used as a compressing code in the filter 121, and a plurality of diffusion codes orthogonal to the spreading code of the desired wave and orthogonal to one another are used for compression in the filters 122 to 124. The outputs x1 to x4 of the filters 121 to 124 are multiplied by weighting coefficients w1 to w4, respectively, and the productions are linearly combined and outputted as a composite signal DCS. The signals x1 to x4 multiplied by the weighting coefficients w1 to w4 and the composite signal DCS are inputted to a coefficient control part 37, and the weighting coefficients w1 to w4 are determined by an algorithm which minimizes the mean power of the composite signal DCS under the restriction condition of these weighting coefficients w1 to w4.

122. 发明公开

EP1105993A1 SYSTEM AND METHOD FOR MODELING SIMULCAST DELAY SPREAD AND OPTIMIZING LAUNCH DELAYS 审中-公开
标题翻译：系统和方法在同一波建模时延扩展并优化发送延迟
公开(公告)号：EP1105993A1
公开(公告)日：2001-06-13
申请号：EP99942338.7
申请日：1999-08-20
申请人： Weblink Wireless, Inc.
发明人： HILL, Selwyn, E. , CHANG, Chi-Ming
IPC分类号： H04J13/04
CPC分类号： H04H20/67 , H04W4/12 , H04W72/005 , H04W84/027
摘要： There is disclosed a launch delay controller (300), for use in a wireless messaging system having a defined coverage area. The launch delay controller (300) controls the transmission of paging messages from a plurality of transmitters in the wireless messaging system.

123. 发明公开

EP1083695A1 APPARATUS FOR ELIMINATING INTERFERENCE SIGNAL 审中-公开
标题翻译： VORRICHTUNG ZURAUSLÖSCHUNGVON INTERFERENZEN
公开(公告)号：EP1083695A1
公开(公告)日：2001-03-14
申请号：EP00911425.7
申请日：2000-03-28
申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
发明人： HAGA, Hiroki , UESUGI, Mitsuru , HIRAMATSU, Katsuhiko
IPC分类号： H04J13/04
CPC分类号： H04B1/71075 , H04B1/7115 , H04B1/712
摘要： A delay device 102 sends reception signals to a subtraction device 113 after delaying it by a predetermined time. Matched filters 103-1 ∼ 103-N perform despreading operation of the reception signals. RAKE-combining devices 104-1 ∼ 104-N perform RAKE-combining operation of the signals after the de-spreading operation. Discrimination devices 105-1 ∼ 105-N perform hard decision of the signals after the RAKE-combining operation. A decision value buffer 107 stores the signals after the hard decision. Likelihood calculation devices 106-1 ∼ 106-N calculate likelihood of all the symbols. A likelihood buffer 108 stores calculated likelihood. A controlling part 110 controls a switch 109. A ranking decision device 111 decides a ranking based on the likelihood. A re-spreading device 112 performs re-spreading operation of a symbol with the highest likelihood ranking. And a subtraction device 113 subtracts the re-spreading result from the delayed reception signals.
摘要翻译：延迟装置102在将其延迟预定时间之后将接收信号发送到减法装置113。匹配滤波器103-1类似103-N执行接收信号的解扩操作。 RAKE组合设备104-1类似于104-N在解扩操作之后执行信号的RAKE组合操作。鉴别装置105-1类似于105-N在RAKE组合操作之后执行信号的硬判决。决定值缓冲器107存储硬判决之后的信号。似然计算装置106-1类似106-N计算所有符号的似然性。似然缓冲器108存储计算出的似然性。控制部分110控制开关109.排序决定装置111基于似然性来确定排序。重新扩展装置112执行具有最高似然等级的符号的重新扩展操作。并且减法装置113从延迟的接收信号中减去再扩频结果。

124. 发明公开

EP0806844A4 DIVERSITY RECEIVER AND CONTROL METHOD THEREFOR 失效
标题翻译：分集接收机和相关控制方法
公开(公告)号：EP0806844A4
公开(公告)日：2000-10-11
申请号：EP96940143
申请日：1996-11-28
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： SAWAHASHI MAMORU , ANDO HIDEHIRO , MIKI YOSHINORI , HIGUCHI KENICHI , TANAKA SHINYA
IPC分类号： H04B1/707 , H04B1/712 , H04B7/08 , H04B7/10 , H04L1/02 , H04L1/06 , H04W16/28 , H04B7/26 , H04J13/04
CPC分类号： H04B1/709 , H04B1/707 , H04B1/712 , H04B7/0851 , H04B7/0857 , H04B7/086 , H04L1/02 , H04L1/06
摘要： A weight coefficient is feedback-controlled so as to maximize the ratio of desired signal power to interference power (SIR), whereby it is possible to improve reception quality and to increase the number of subscribers per cell and it is also possible to increase the speed of establishment of diffused code synchronization and the speed of convergence of the weight coefficient. A coherence adaptive diversity arrangement to which absolute synchronization detection is applicable is adopted. The weighht coefficient of each diversity branch is adaptively feedback-controlled, whereby it is possible to reduce the influence of interference power from other communicators, so that the number of subscribers per cell can be increased. Furthermore, a direction in which a highest reception SIR is obtainable is determined by rotating an antenna with directivity of predetermined angle being given to it. After that, by setting the initial value of the weight coefficient to the direction, the speed of convergence of the weight coefficient can be increased.

125. 发明公开

EP1028553A1 COMMUNICATION DEVICE AND METHOD OF PEAK POWER CONTROL 审中-公开
标题翻译： VOMFAHREN ZUR REGELUNG DER MAXIMALLEISTUNG KOMMUNIKATIONS VORRICHTUNG
公开(公告)号：EP1028553A1
公开(公告)日：2000-08-16
申请号：EP99938533.9
申请日：1999-08-20
申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
发明人： HIRAMATSU, Katsuhiko , UE, Toyoki
IPC分类号： H04J13/04
CPC分类号： H04L5/06
摘要： Modulation circuits 101 to 104 modulate transmission signals of four users (using basic slots with pilot symbols cyclically inserted into transmission data) or a control signal including a pilot signal and transmission signals of three users (using basic slots with pilot symbols not inserted into transmission data). Phase rotation circuits 105 to 108 rotate phases of output signals from modulation circuits 101 to 104 according to the total number of users. Addition circuit I109 adds up the in-phase channels of the output signals from phase rotation circuits 105 to 108 and addition circuit Q110 adds up the quadrature-phase channels of the output signals from phase rotation circuits 105 to 108. Radio section 115 modulates the output signals from addition circuit I109 and addition circuit Q110 to radio frequencies and then amplifies these signals.
摘要翻译：调制电路101至104调制四个用户（使用循环插入到传输数据中的导频符号的基本时隙）的传输信号或包括导频信号和三个用户的传输信号的控制信号（使用没有插入到传输数据中的导频符号的基本时隙）。相位旋转电路105至108根据用户总数将来自调制电路101至104的输出信号的相位旋转。加法电路I109将来自相位旋转电路105至108的输出信号的同相通道相加，并且加法电路Q110将来自相位旋转电路105至108的输出信号的正交相位通道相加。无线电部分115调制输出来自加法电路I109和加法电路Q110的信号到无线电频率，然后放大这些信号。

126. 发明公开

EP0776106A4 METHOD FOR SYNCHRONIZING SPREADING CODE AND DEVICE FOR SYNCHRONIZING SPREADING CODE 失效
标题翻译：方法和设备用于同步的扩频码
公开(公告)号：EP0776106A4
公开(公告)日：2000-06-28
申请号：EP96917651
申请日：1996-06-12
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： SAWAHASHI MAMORU , HIGASHI AKIHIRO , HIGUCHI KENICHI
IPC分类号： H04B1/707 , H04J13/04 , H04J11/00 , H04L7/00
CPC分类号： H04B1/70775 , H04B1/7075 , H04B1/70755 , H04B2201/70701
摘要： I- and Q-channel signals are multiplied by spreading replica codes (24) and the products are integrated only for one spreading code period (25). Modulated data components and vestigial carrier frequency components are eliminated by subjecting the integrated signals (26) to amplitude square-law detection. The signal power of the sum of the signals (27) subjected to the amplitude square-law detection is found over one spreading code period (updating the clock phase of a digital control clock generator (30)) and each power information is stored in a memory circuit in an initial synchronous mode control circuit (29). The clock phase of the generator (30) is fixed with the phase of the spreading replica code at the maximum correlation detected power for one spreading code period. Thereafter, a spreading-code synchronized phase confirming mode is started. Since the spreading code synchronization confirming mode is provided in such a way, initial synchronization is established with a low synchronization error probability and a tracking mode is started in a short time.

127. 发明公开

EP0995285A1 RATE DETECTION FOR VARIABLE RATE CDMA COMMUNICATION SYSTEMS 失效
标题翻译：检测数据速率与可变数据速率CDMA通信系统
公开(公告)号：EP0995285A1
公开(公告)日：2000-04-26
申请号：EP98934033.6
申请日：1998-07-03
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (publ)
发明人： OVESJÖ, Fredrik , DAHLMAN, Erik
IPC分类号： H04J13/04 , H04B1/707
CPC分类号： H04B1/707 , H04B2201/70703 , H04J13/0048 , H04J13/18 , H04L1/0025
摘要： Variable rate data transmissions are accommodated having BRI transmitted in the same frame as the data itself. When Walsh code spreading is employed, the despreading process can be split into two separate despreading operations, with buffering between the two operations. Buffering is made of the intermediate symbols between the despreading stages, and can be made at the maximum user data rate instead of the much higher chip rate. In this way, the size of the buffer in the receiver can be significantly reduced.

128. 发明公开

EP0987849A1 DIRECT SPREAD SPECTRUM COMMUNICATION SYSTEM CORRESPONDING TO DELAYED MULTIPLEX MODE, AND METHOD OF COMMUNICATION USING THE SYSTEM 失效
标题翻译：直接蔓延新闻传播系统将根据延迟复用的方式，并使用该系统的新闻传输过程
公开(公告)号：EP0987849A1
公开(公告)日：2000-03-22
申请号：EP98905638.7
申请日：1998-02-25
申请人： SHARP KABUSHIKI KAISHA
发明人： OKAMOTO, Naoki
IPC分类号： H04J13/04
CPC分类号： H04J13/00 , H04J3/0602 , H04J3/07 , H04L7/041
摘要： A direct spread spectrum communication system in accordance with a delayed multiplex mode in which improvement in correlation and improvement in error rate can be perfectly realized in any data length. A data generating section (2) has means for appending an additional bit so as to generate an integral multiple of the multiple number in generating information to be transmitted from data received from an upper layer (1) referred to as a MAC layer. This means learns the symbol length of a data part from information obtained from the upper layer (1), and knows the symbol length of a bit synchronization section, a frame synchronization section and a various information section which should be originally appended as a packet. Therefore, the number of additional bits such that the total number of symbols amounts to an integral multiple of the multiplex number is added before the frame synchronization section. A bit addition section may be inserted before the start of data entry, or at the last part of the data, that is, a lost part.
摘要翻译：在与在错误率相关和改进其中的改进延迟多路复用模式雅舞蹈的直接扩展频谱通信系统可以在任何数据长度来完美地实现。数据生成部（2）具有用于附加位的附加，以便在多路数量的整数倍在生成信息是从在（1）由被称为一个MAC层的上层接收到的数据的反式mitted生成。这意味着学习数据部分从上层（1）中获得的信息的符号长度，并且知道一个比特同步部分，帧同步部分和原本应附加为一个分组中的各种信息段的符号长度。因此，检查的附加比特的数量没有符号的总数等于在所述多路复用数的整数倍的帧同步部之前添加。阿位加法部分可以数据输入开始前被插入，或者在数据的负荷的一部分，就是做，丢失的部分。

129. 发明公开

EP0859471A2 Code division multiplex communication system 失效
标题翻译：码分多路复用通信系统
公开(公告)号：EP0859471A2
公开(公告)日：1998-08-19
申请号：EP98300644.6
申请日：1998-01-29
申请人： Tsubouchi, Kazuo
发明人： Tsubouchi, Kazuo , Masu, Kazuya , Fujita, Yasuhito
IPC分类号： H04B1/707 , H04J13/04
CPC分类号： H04B1/7093
摘要： A code division multiplex communications system comprises: receiving means (1,2) for receiving a radio wave and transforming the radio wave to an electric signal; voltage-current converting means (101) for converting the electric signal to a current signal; current delaying means (102, 102 2 ... 102 n ) for sequentially reading the electric signal at a timing of a clock pulse; adding and subtracting means (105) for adding and subtracting output currents of the current delaying means in accordance with a spread code; and reproducing means (107) for reproducing a transmission signal on the basis of an output of the adding and subtracting means.
摘要翻译：码分多路复用通信系统包括：接收装置（1,2），用于接收无线电波并将无线电波变换成电信号; 电压 - 电流转换装置（101），用于将电信号转换为电流信号; 电流延迟装置（102,1022,102n），用于在时钟脉冲的定时顺序读取电信号; 加法和减法装置（105），用于根据扩展码对电流延迟装置的输出电流进行加和减; 和再现装置（107），用于根据加法和减法装置的输出再现传输信号。

130. 发明公开

EP0670090A4 METHOD AND APPARATUS FOR POWER ESTIMATION IN A COMMUNICATION SYSTEM. 无效
标题翻译：方法和装置估算性能如转让安排。
公开(公告)号：EP0670090A4
公开(公告)日：1998-05-06
申请号：EP94924500
申请日：1994-07-25
申请人： MOTOROLA INC
发明人： LING FUYUN
IPC分类号： H04B1/50 , H04B7/005 , H04B7/26 , H04B17/00 , H04J13/04 , H04B7/216
CPC分类号： H04W52/04 , H04B17/327
摘要： A method and apparatus is provided for estimating signal power. This is accomplished by demodulating a received communication signal to derive a stream of samples. These samples may consist of either reference samples (132), data samples (142), or a combination thereof. An estimate of the power (118) of the received communication signal is then generated as a function of the stream of samples (144). The signal power estimate (148) may, for example, be used in a power control algorithm by setting a power control indicator (121), in response to a comparison between the signal power estimate and a predetermined threshold. Subsequently, the power control indicator (171) is transmitted over a communication channel to another communication unit. The communication unit detects a power control indicator (171) within a signal (120) received from over the communication channel and adjusts a particular signal transmission power of a signal transmitter in response to the detected power control indicator (171).

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