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1.发明公开
公开(公告)号：EP0776106A4
公开(公告)日：2000-06-28
申请号：EP96917651
申请日：1996-06-12
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.
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2.发明公开TRANSMISSION POWER CONTROL METHOD, MOBILE PHONE, BASE STATION, AND RECORDING MEDIUM 有权方法发送功率控制，手机基站以及记录介质
公开(公告)号：EP0975185A4
公开(公告)日：2004-12-29
申请号：EP99900309
申请日：1999-01-14
发明人： KANEDA RYUSUKE , HAGIWARA SEIJI , HIGASHI AKIHIRO
摘要： Even if the reception qualities of the signals from the base stations connected are different from each other, the transmission power of a mobile phone can be appropriately controlled during a soft handover. A mobile phone (16) connectable to multiple base stations at the same time comprises a reception radio section (3) and TPC bit detecting sections (6, 7) the three for receiving and detecting TPC bits (transmission power control signal) from multiple base stations, a synthesizing section (8) for combining the detected TPC bits to generate a synthesized signal, and a transmission power control determining section (9) for controlling the transmission power of the mobile phone (16) based on the synthesizing signal.
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公开(公告)号：EP1011211A4
公开(公告)日：2001-01-24
申请号：EP98914086
申请日：1998-04-17
发明人： NAKAMURA TAKEHIRO , HAGIWARA JUNICHIRO , NAKANO ETSUHIRO , OHNO KOJI , ONOE SEIZO , HIGASHI AKIHIRO , TAMURA MOTOSHI , NAKANO MASATOMO , KAWAKAMI HIROSHI , MORIKAWA HIROKI
IPC分类号： H04B7/005 , H04B7/26 , H04J13/00 , H04J13/10 , H04J13/16 , H04L12/801 , H04L12/911 , H04L12/951 , H04W4/00 , H04W16/24 , H04W28/06 , H04W36/08 , H04W52/08 , H04W52/12 , H04W52/16 , H04W52/24 , H04W52/32 , H04W52/40 , H04W52/50 , H04W52/56 , H04W52/60 , H04W72/04 , H04W84/12 , H04W88/08 , H04W92/10 , H04W92/12 , H04B1/707 , H04L12/28
CPC分类号： H04W88/08 , H04B7/2618 , H04B7/2628 , H04B2201/70701 , H04B2201/70703 , H04J13/00 , H04J13/0022 , H04J13/0029 , H04J13/0077 , H04J13/10 , H04J13/16 , H04W52/08 , H04W52/12 , H04W52/16 , H04W52/24 , H04W52/241 , H04W52/248 , H04W52/322 , H04W52/325 , H04W52/40 , H04W52/50 , H04W52/56 , H04W52/60 , H04W92/10 , H04W92/12
摘要： A base station apparatus comprising a transmission/reception amplifying unit for amplifying CDMA signals from/to a mobile station; a radio unit connected to the transmission/reception amplifying unit for D-A converting a base band-spread transmission signal to an analog signal, quadrature-modulating the analog signal, quasi-synchronously detecting a received signal, and A-D converting the detected signal to a digital signal; a base band signal processing unit connected to the radio unit and subjects the transmission signal and the received signal to the base band signal processing; a transmission channel interface connected to the base band signal processing unit and serving as an interface with an external line; and a base station control unit that controls radio circuits, and setting/resetting of the radio circuits. The apparatus effects communication with an external line by using ATM cells. The communication with the mobile station by using CDMA signals is effected by mapping a plurality of logic channels on a plurality of physical channels. The band of the CDMA signals is spread with two short and long spread-series codes.
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公开(公告)号：EP0994581A4
公开(公告)日：2005-03-09
申请号：EP99923851
申请日：1999-05-11
CPC分类号： H04W48/16 , H04B1/707 , H04W36/08 , H04W52/287
摘要： Conventionally, when a mobile station in a CDMA mobile communication system searches for a channel other than the communication channel, the communication with a base station in the cell is sometimes interrupted. A method of the invention prevents the loss of information due to the interruption. The method comprises the first transmission step (the period for which the transmission power is p as shown in Fig. 10c) of transmitting signals at a transmission rate (R1) and at a transmission output level (P1) from the mobile station to the base station, the stop step (the period for which the transmission power is 0 as shown in Fig. 10c) of stopping the signal transmission from the mobile station to the base station, and the second transmission step (the period for which the transmission power is 2p as shown in Fig. 10c) of transmitting signals at a transmission rate (R2) higher than the transmission rate (R1) and at a transmission output level (P2) higher than the transmission output level (P1). During the second transmission step, information not transmitted during the stop step can be transmitted.
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5.发明公开
公开(公告)号：EP0758168A4
公开(公告)日：2000-08-16
申请号：EP96903224
申请日：1996-02-23
发明人： OKUMURA YUKIHIKO , ADACHI FUMIYUKI , OHNO KOJI , HIGASHI AKIHIRO
IPC分类号： H04B1/707 , H04B7/26 , H04J3/14 , H04J3/16 , H04J13/00 , H04L1/00 , H04L1/08 , H04L7/04 , H04J13/04 , H04J3/00 , H04J3/22 , H04L12/56
CPC分类号： H04L1/0046 , H04B1/707 , H04B7/2628 , H04B2201/70703 , H04B2201/70705 , H04J3/14 , H04J3/1682 , H04L1/0002 , H04L1/0007 , H04L1/0009 , H04L1/0013 , H04L1/0025 , H04L1/0032 , H04L1/0038 , H04L1/0039 , H04L1/0059 , H04L1/0061 , H04L1/0063 , H04L1/0071 , H04L1/0079 , H04L1/0086 , H04L1/08 , H04L7/048 , H04L2001/0098 , Y02D50/10
摘要： A variable rate transmission method that can vary the transmission rate of data. A transmitting side supplies a transmitted data sequence to an error detecting encoder (105) and a frame memory (103). The frame memory (103) stores data of a variable length to be transmitted in one frame. The error detecting encoder (105) calculates an error detecting code (such as CRC code) for each frame of the transmitted data. A multiplexer (104) adds the calculated error detecting code ahead of the transmitted data to place it at the initial position of the frame, and sequentially outputs the data sequence frame by frame. A receiving side calculates an error detecting code of the data in each transmitted frame in the same manner as the transmitting side, and compares the calculated error detecting code with the error detecting code at the initial position of the frame. The end bit of the frame data is decided as a position at which the two error detecting codes coincide. This makes it possible to transmit variable length data without informing the receiving side of the data length in each frame. This is equivalent that the transmission rate can be varied freely. A variable rate transmission method that can vary the transmission rate of data. A transmitting side supplies a transmitted data sequence to an error detecting encoder (105) and a frame memory (103). The frame memory (103) stores data of a variable length to be transmitted in one frame. The error detecting encoder (105) calculates an error detecting code (such as CRC code) for each frame of the transmitted data. A multiplexer (104) adds the calculated error detecting code ahead of the transmitted data to place it at the initial position of the frame, and sequentially outputs the data sequence frame by frame. A receiving side calculates an error detecting code of the data in each transmitted frame in the same manner as the transmitting side, and compares the calculated error detecting code with the error detecting code at the initial position of the frame. The end bit of the frame data is decided as a position at which the two error detecting codes coincide. This makes it possible to transmit variable length data without informing the receiving side of the data length in each frame. This is equivalent that the transmission rate can be varied freely.
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6.发明公开SYNCHRONOUS DETECTOR AND SYNCHRONIZING METHOD FOR DIGITAL COMMUNICATION RECEIVER 失效同步检波电路和同步方法将数字信号接收器
公开(公告)号：EP0715440A4
公开(公告)日：2000-03-15
申请号：EP95922721
申请日：1995-06-21
发明人： HIGASHI AKIHIRO , ADACHI FUMIYUKI , OHNO KOJI , SAWAHASHI MAMORU
CPC分类号： H04L25/0236 , H04L7/08 , H04L25/0212 , H04L25/0232
摘要： A synchronous detecting method in which the transfer function of a propagation path is estimated by regarding the information symbols adjacent to pilot signals as known symbols and using the information symbols as pseudo-pilot signals. The method includes a step of estimating the transfer function by using the pilot signals, a step of performing interpolation synchronous detection of part of the information symbols by using the estimated transfer function, a step of storing the result of the interpolation synchronous detection as pseudo-pilot signals, a step of reestimating the transfer function related to information symbols corresponding to the pseudo-pilot signals from the pseudo-pilot signals and the received signals corresponding to the pseudo-pilot signal, regarding the pseudo-pilots as known correct signals, and a step of performing interpolation synchronous detection of each information symbol by using the reestimated transfer function. Thus, the detection characteristic can be improved by estimating the transfer function with high accuracy even when the number of symbols per pilot signal is small.
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7.发明公开DEVICE FOR GENERATING A PLURALITY OF CODE SERIES SIMULTANEOUSLY AND CDMA RADIO RECEIVER COMPRISING THE DEVICE 有权设备的同时制造码系列和CDMA接收器装置必须装有中的几个
公开(公告)号：EP0963070A4
公开(公告)日：2002-03-06
申请号：EP98954760
申请日：1998-11-19
发明人： OGAWA SHINSUKE , TAKAGI HIROFUMI , HIGASHI AKIHIRO
IPC分类号： H03K3/84 , H03K19/20 , H03M7/00 , H04B1/7117 , H04B7/26 , H04J13/00 , H04J13/10 , H04K1/00 , H04W48/16 , H04W72/04
CPC分类号： H04J13/10 , H04J13/0029
摘要： The outputs of a plurality of shift stages (S1, S2 and S4) of an M-series generator (31A) are subjected to EOR (XR11 and XR12) and the output code of the generator (31A) is delayed by required bits, for example, 3 bits, to generate a 3-bit delay M-series. In a similar way, the outputs of a plurality of shift stages are combined and subjected to EOR to generate another delayed M-series. The outputs of simultaneous delayed code generators (31) and the output of another M-series generator (32) are subjected to EOR to generate a plurality of gold code series simultaneously.
摘要翻译： 从移位的多个输出的EOR（XR11，XR12）级S1，S2，M系列发生器31A的S4被形成，由此获得的M系列具有期望延迟，其中在一个实例是三个比特的 相对于从所述发电机31A输出代码延迟。 类似地，从移位级的输出多元化合并，并在EOR其形成为提供另一个延迟M系列。 从同时延迟码产生器31，并从其他的M系列发生器32输出的每个输出的EOR被形成，因此同时获得的Gold码串联的多个。
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公开(公告)号：EP0668662A4
公开(公告)日：1997-02-12
申请号：EP94923066
申请日：1994-08-04
发明人： ADACHI FUMIYUKI , SAWAHASHI MAMORU , HIGASHI AKIHIRO , OHNO KOJI , DOHI TOMOHIRO
CPC分类号： H04B7/0894 , H04B1/712 , H04B7/0671
摘要： A repeater for improving a RAKE receiving effect. A signal received from a base station passes in parallel through a first path including a first delay element, and a second path not including a delay delement, and is sent to a mobile station. A signal received from the mobile station passes in parallel through a third path including a second delay element, and a fourth path not including a delay element, and is sent to the base station. The delay time for the delay elements is set to be longer than one chip time for a diffusion code. Consequently, a resoluble multiple wave is generated forcibly in a RAKE receiver. In the RAKE receiver, the amplitude of a desired wave component alone is estimated with respect to each delay wave. With reference to this amplitude, the weighing of each delay wave component from a detector is done, and the weighed signals are synthesized and subjected to code judgement.
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