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1. 发明申请

US20070286129A1 SINGLE CARRIER/DS-CDMA PACKET TRANSMISSION METHOD, AN UPLINK PACKET TRANSMISSION METHOD IN A MULTI-CARRIER/DS-CDMA MOBILE COMMUNICATIONS SYSTEM, AND A STRUCTURE OF A DOWNLINK CHANNEL IN A MULTI-CARRIER/DS-CDMA MOBILE COMMUNICATIONS SYSTEM 审中-公开
公开(公告)号：US20070286129A1
公开(公告)日：2007-12-13
申请号：US11831189
申请日：2007-07-31
申请人： Hiroyuki Atarashi , Sadayuki Abeta , Koichi Okawa , Takehiro Ikeda , Mamoru Sawahashi , Fumiyuki Adachi
发明人： Hiroyuki Atarashi , Sadayuki Abeta , Koichi Okawa , Takehiro Ikeda , Mamoru Sawahashi , Fumiyuki Adachi
IPC分类号： H04B7/00
CPC分类号： H04W72/1252 , H04B1/707 , H04J13/00 , H04L5/0019 , H04L5/0048 , H04L5/0053 , H04L5/0064 , H04L5/0087 , H04L5/0092 , H04L5/06 , H04W72/06
摘要： The present invention provides a single carrier/DS-CDMA packet transmission method wherein a predetermined time slot is assigned to reservation demand packet transmission in regard to a spreading code, and the reservation demand packet and data packets are time-multiplexed for transmission. An uplink packet transmission method in a multi-carrier/DS-CDMA mobile communication system is also provided, wherein frames are set up in each communication channel of a subcarrier, time slots which are time-segments of the frames are set up further, and a mobile station spreads a packet to be transmitted by a spreading code and the information signal is transmitted to a base station in a predetermined time slot. A downlink channel configuration in a multi-carrier/DS-CDMA mobile communication system is further provided, wherein a plurality of communication channels assigned to each of a plurality of subcarriers are divided for every predetermined time frame, and multiplexed, and the plurality of the communication channels assigned to each subcarrier include a common-control channel used by a plurality of users in common, and communication channels peculiar to each user.

2. 发明授权

US07298721B2 Single-carrier/DS-CDMA packet transmitting method, uplink packet transmitting method in multi carrier/DS-CDMA mobile communication system, and structure of downlink channel in multi carrier/DS-CDMA mobile communication system 失效
标题翻译：单载波/ DS-CDMA分组发送方法，多载波/ DS-CDMA移动通信系统中的上行分组发送方法以及多载波/ DS-CDMA移动通信系统中的下行链路信道的结构
公开(公告)号：US07298721B2
公开(公告)日：2007-11-20
申请号：US09926257
申请日：2001-02-02
申请人： Hiroyuki Atarashi , Sadayuki Abeta , Koichi Okawa , Takehiro Ikeda , Mamoru Sawahashi , Fumiyuki Adachi
发明人： Hiroyuki Atarashi , Sadayuki Abeta , Koichi Okawa , Takehiro Ikeda , Mamoru Sawahashi , Fumiyuki Adachi
IPC分类号： H04B7/216
CPC分类号： H04W72/1252 , H04B1/707 , H04J13/00 , H04L5/0019 , H04L5/0048 , H04L5/0053 , H04L5/0064 , H04L5/0087 , H04L5/0092 , H04L5/06 , H04W72/06
摘要： The present invention provides a single carrier/DS-CDMA packet transmission method wherein a predetermined time slot is assigned to reservation demand packet transmission in regard to a spreading code, and the reservation demand packet and data packets are time-multiplexed for transmission. An uplink packet transmission method in a multi-carrier/DS-CDMA mobile communication system is also provided, wherein frames are set up in each communication channel of a subcarrier, time slots which are time-segments of the frames are set up further, and a mobile station spreads a packet to be transmitted by a spreading code and the information signal is transmitted to a base station in a predetermined time slot. A downlink channel configuration in a multi-carrier/DS-CDMA mobile communication system is further provided, wherein a plurality of communication channels assigned to each of a plurality of subcarriers are divided for every predetermined time frame, and multiplexed, and the plurality of the communication channels assigned to each subcarrier include a common-control channel used by a plurality of users in common, and communication channels peculiar to each user.
摘要翻译：本发明提供了一种单载波/ DS-CDMA分组传输方法，其中相对于扩展码将预定时隙分配给预留请求分组传输，并且预留请求分组和数据分组被时分复用以进行传输。还提供了一种在多载波/ DS-CDMA移动通信系统中的上行链路分组传输方法，其中在子载波的每个通信信道中建立帧，进一步设置作为帧的时间段的时隙，以及移动台通过扩展码扩展要发送的分组，并且在预定时隙中将信息信号发送到基站。还提供了一种多载波/ DS-CDMA移动通信系统中的下行链路信道配置，其中分配给多个子载波中的每一个的多个通信信道被划分为每个预定时间帧，并被多路复用，并且多个分配给每个子载波的通信信道包括共同使用的公共控制信道和每个用户特有的通信信道。

3. 发明授权

US06647003B1 Channel estimation unit, and CDMA receiver and CDMA transceiver with channel estimation unit 失效
标题翻译：信道估计单元，以及具有信道估计单元的CDMA接收机和CDMA收发器
公开(公告)号：US06647003B1
公开(公告)日：2003-11-11
申请号：US09358037
申请日：1999-07-20
申请人： Sadayuki Abeta , Mamoru Sawahashi , Fumiyuki Adachi
发明人： Sadayuki Abeta , Mamoru Sawahashi , Fumiyuki Adachi
IPC分类号： H04B7216
CPC分类号： H04L25/0212 , H04B2201/70701 , H04L25/0226 , H04L25/0234
摘要： There are provided a channel estimation unit for achieving highly accurate channel estimation, a CDMA receiver and a CDMA transceiver with the channel estimation unit. Channel estimates of data symbols are obtained from a pilot symbol sequence which is parallel with a data symbol sequence. First, a plurality of pilot blocks are generated from the pilot symbol sequence. The channel estimates of the data symbols are obtained by calculating a sum of appropriately weighted averages of pilot symbols in the individual pilot blocks. This enables highly accurate channel estimation. More accurate channel estimation can be achieved by carrying out the channel estimation of the data symbols using the pilot symbols belonging to other slots rather than limiting to the pilot symbols in the slot to which the estimated data symbol belongs.
摘要翻译：提供了一种用于实现高度准确的信道估计的信道估计单元，具有信道估计单元的CDMA接收机和CDMA收发器。从与数据符号序列并行的导频符号序列获得数据符号的信道估计。首先，从导频符号序列生成多个导频块。通过计算各个导频块中的导频符号的适当加权平均值的和来获得数据符号的信道估计。这使得能够进行高度准确的信道估计。可以通过使用属于其他时隙的导频符号执行数据符号的信道估计而不是限制估计数据符号所属的时隙中的导频符号来实现更准确的信道估计。

4. 发明授权

US06757272B1 Channel estimation unit, and CDMA receiver and CDMA transceiver with channel estimation unit 失效
标题翻译：信道估计单元，以及具有信道估计单元的CDMA接收机和CDMA收发器
公开(公告)号：US06757272B1
公开(公告)日：2004-06-29
申请号：US09375906
申请日：1999-08-17
申请人： Sadayuki Abeta , Mamoru Sawahashi , Fumiyuki Adachi
发明人： Sadayuki Abeta , Mamoru Sawahashi , Fumiyuki Adachi
IPC分类号： H04B1500
CPC分类号： H04W52/24 , H04L25/0214 , H04L25/0232
摘要： There are provided a channel estimation unit for achieving highly accurate channel estimation, a CDMA receiver and a CDMA transceiver with the channel estimation unit. Channel estimates of data symbols are obtained from pilot symbols in a combined symbol sequence which has a plurality of slots and includes the data symbols and the pilot symbols. First, the pilot symbols in the combined symbol sequence are located. Second, pilot blocks are generated by extracting the pilot symbols from two or more slots in the combined symbol sequence. Third, channel estimates of the data symbols are obtained by calculating a weighted sum of averages of the pilot symbols in the individual pilot blocks. The weighted sum is carried out using appropriate weighting factors for individual data symbols in each slot. This enables highly accurate channel estimation.
摘要翻译：提供了一种用于实现高度准确的信道估计的信道估计单元，具有信道估计单元的CDMA接收机和CDMA收发器。从具有多个时隙的组合符号序列中的导频符号获得数据符号的信道估计，并且包括数据符号和导频符号。首先，组合符号序列中的导频符号位于。第二，通过从组合符号序列中的两个或更多个时隙提取导频符号来产生导频块。第三，通过计算各个导频块中的导频符号的平均值的加权和来获得数据符号的信道估计。使用每个时隙中的各个数据符号的适当加权因子来执行加权和。这使得能够进行高度准确的信道估计。

5. 发明授权

US06904078B1 CDMA receiver and CDMA transmitter/receiver 失效
标题翻译： CDMA接收机和CDMA发射机/接收机
公开(公告)号：US06904078B1
公开(公告)日：2005-06-07
申请号：US09446560
申请日：1999-04-22
申请人： Sadayuki Abeta , Mamoru Sawahashi , Fumiyuki Adachi
发明人： Sadayuki Abeta , Mamoru Sawahashi , Fumiyuki Adachi
IPC分类号： H04B1/712 , H04J13/00 , H04L25/02 , H04W52/04 , H04W88/02 , H04W88/08 , H04B1/69 , H04B1/707 , H04B1/713
CPC分类号： H04B1/707 , H04B2201/70707 , H04L25/0202 , H04L25/0214 , H04L25/0234
摘要： A CDMA receiver and a CDMA transceiver are provided which have high resistance to fading fluctuations, and carry out highly accurate channel estimation, considering the rate of channel fluctuations. When carrying out the channel estimation by calculating weighted sums of the (average values of) pilot symbols interposed into a data symbol sequence, the weighting control is performed considering the rate of the channel fluctuations. For example, the weighting control is carried out using, as its update values, inner products of the channel estimation values and the (average values of) pilot symbols. This makes it possible to achieve the highly accurate channel estimation.
摘要翻译：提供CDMA接收机和CDMA收发器，其具有高的抗衰落波动性，并且考虑到信道波动的速率，执行高度准确的信道估计。当通过计算插入到数据符号序列中的导频符号的（平均值）的加权和进行信道估计时，考虑到信道波动的速率来进行加权控制。例如，使用信道估计值的内积和导频符号的（平均值）作为其更新值来执行加权控制。这使得可以实现高度准确的信道估计。

6. 发明授权

US5815812A Soft handoff system of spread spectrum communication 失效
标题翻译：软切换系统的扩频通信
公开(公告)号：US5815812A
公开(公告)日：1998-09-29
申请号：US760257
申请日：1996-12-05
申请人： Changming Zhou , Guoliang Shou , Makoto Yamamoto , Mamoru Sawahashi , Fumiyuki Adachi , Sunao Takatori
发明人： Changming Zhou , Guoliang Shou , Makoto Yamamoto , Mamoru Sawahashi , Fumiyuki Adachi , Sunao Takatori
IPC分类号： H04J13/00 , H04B1/7093 , H04W36/18 , H04W36/36 , H04Q7/32
CPC分类号： H04B1/7093 , H04W36/18
摘要： The present invention provides a system for soft handoff, which processes in high speed. A system according to the present invention substantially realizes a multiplication by a circuit for classifying received signals from a plurality of cell site stations once held in an analog sampling and holding circuit into two groups, multiplication and accumulation, by a small circuit of low electric power consumption.
摘要翻译：本发明提供了一种用于软切换的系统，其高速处理。根据本发明的系统基本上实现了一种电路的乘法，该电路用于将一次保持在模拟采样和保持电路中的多个小区站点的接收信号分类成两组，通过低功率的小电路进行乘法和累加消费。

7. 发明授权

US5748623A Code division multiple access transmitter and receiver 失效
标题翻译：码分多址发射机和接收机
公开(公告)号：US5748623A
公开(公告)日：1998-05-05
申请号：US428203
申请日：1995-06-05
申请人： Mamoru Sawahashi , Fumiyuki Adachi
发明人： Mamoru Sawahashi , Fumiyuki Adachi
IPC分类号： H04B1/707 , H04J13/00 , H04B7/216
CPC分类号： H04J13/00
摘要： A code division multiple access transmitter and receiver that makes it possible to reduce its size by designating a spreading code and a carrier frequency in a baseband. It includes a primary modulator for performing primary modulation by transmission information, thereby producing a primary modulated I signal and a primary modulated Q signal, a spreading code generator for generating a spreading code with a frequency higher than a rate of the transmission information, a secondary modulator for spread-modulating the primary modulated I signal and Q signal by using the spreading code, thereby outputting spread I-channel data and spread Q-channel data, a frequency offset circuit for offsetting the center frequency of the spread I-channel data and Q-channel data by a designated offset frequency, thereby outputting frequency offset data, and a transmitting circuit for converting the frequency offset data into a transmitted signal.
摘要翻译： PCT No.PCT / JP94 / 01450 Sec。 371日期：1995年6月5日 102（e）日期1995年6月5日PCT 1994年9月2日PCT公布。第WO95 / 06987号公报日期1995年3月9日一种码分多址发射机和接收机，可以通过在基带中指定扩展码和载波频率来减小其大小。它包括一个主调制器，用于通过传输信息执行一次调制，从而产生一次调制的I信号和一次调制的Q信号，一个用于产生频率高于传输信息速率的扩展码的扩展码发生器，调制器，用于通过使用扩展码扩展调制一次调制的I信号和Q信号，由此输出扩展的I信道数据和扩展Q信道数据，用于抵消扩展的I信道数据的中心频率的频率偏移电路，通过指定的偏移频率的Q信道数据，从而输出频率偏移数据，以及用于将频率偏移数据转换为发送信号的发送电路。

8. 发明授权

US5745531A Automatic gain control apparatus, communication system, and automatic gain control method 失效
标题翻译：自动增益控制装置，通信系统和自动增益控制方法
公开(公告)号：US5745531A
公开(公告)日：1998-04-28
申请号：US411605
申请日：1995-06-26
申请人： Mamoru Sawahashi , Fumiyuki Adachi
发明人： Mamoru Sawahashi , Fumiyuki Adachi
IPC分类号： H04B1/10 , H04B1/16 , H04B1/30 , H04B1/707 , H04B7/005 , H04L27/08
CPC分类号： H04W52/52 , H04B1/1027 , H04B1/16 , H04B1/30 , H04B1/707
摘要： An automatic gain control apparatus of a spread spectrum signal receiver which can quickly follow distance variations, median variations, and instantaneous variations due to Rayleigh fading. An output of a variable gain amplifier 22 is quadrature-detected, the detected outputs are A/D converted, the digital output thereof are supplied to a despreading processor 34 through a digital level corrector 33, and the despreading output undergoes the instantaneous envelope detection by an instantaneous envelope detector 37. The envelope-detected signal is supplied to a symbol timing generator 38 which extracts data symbol timing component using a peak signal as a trigger, and a time window through which a desired signal enters is calculated from the symbol timing. Within the time window, the output of the instantaneous envelope detector 37 undergoes time integration by a level detector 43, and its output shifts the level of the digital level corrector 33, thereby making the output constant. The output of the level detector 43 is averaged over a few symbol length by a level detector 44 whose output controls the gain of the variable gain amplifier 22, thereby making its output constant.
摘要翻译： PCT No.PCT / JP94 / 01310 Sec。 371日期：1995年6月26日 102（e）日期1995年6月26日PCT 1994年8月9日PCT PCT。公开号WO95 / 05038 日期1995年2月16日一种扩频信号接收机的自动增益控制装置，可以快速跟踪距离变化，中值变化和瑞利衰落引起的瞬时变化。可变增益放大器22的输出被正交检测，检测的输出被A / D转换，其数字输出通过数字电平校正器33提供给解扩处理器34，解扩输出经过瞬时包络检测，由瞬时包络检测器37.将包络检测信号提供给符号定时发生器38，其使用峰值信号作为触发提取数据符号定时分量，并且从符号定时计算期望信号进入的时间窗。在时间窗口内，瞬时包络检测器37的输出由电平检测器43进行时间积分，其输出移动数字电平校正器33的电平，从而使输出恒定。电平检测器43的输出由电平检测器44在几个符号长度上进行平均，电平检测器44的输出控制可变增益放大器22的增益，从而使其输出恒定。

9. 发明授权

US5638362A Correlation detector and communication apparatus 失效
标题翻译：相关检测器和通讯装置
公开(公告)号：US5638362A
公开(公告)日：1997-06-10
申请号：US481396
申请日：1995-06-13
申请人： Tomohiro Dohi , Mamoru Sawahashi , Fumiyuki Adachi
发明人： Tomohiro Dohi , Mamoru Sawahashi , Fumiyuki Adachi
IPC分类号： H04B1/707 , H04B7/212 , H04J13/00
CPC分类号： H04B1/7085 , H04B7/2125
摘要： A correlation detector is provided which can establish initial acquisition quickly, and achieve high accuracy tracking by extracting crosscorrelation components in a receiver for CDMA communication, and a communication system using the correlation detector is also provided. During the initial acquisition, a received signal 21 is supplied to a matched filter 43. When an acquisition decision circuit 45 decides that the matched filter 43 detects the acquisition, it controls a switching circuit 42 to supply the received signal 21 to multipliers 47 and 48, and resets a VCCG 29 and a spreading code replica generator 30. After establishing the acquisition, a received spreading code is quasicoherent detected, and the detected spread signal is multiplied by a phase advanced replica and a phase retarded replica. Correlation detection signals are produced from the products, and squared components of the correlation detected signals are generated, summed in the opposite phase, and averaged along the time axis. The averaged signal is inversely modulated by a decision signal of received data to obtain a phase error signal, the decision signal being obtained by multiplying the received spread signal by a replica in synchronism with the received spread sinal, and by integrating the product over a plurality of chips to compensate for a receive phase error. The replica generator is driven by a clock signal whose phase is controlled by the phase error signal.
摘要翻译： PCT No.PCT / JP94 / 01715 Sec。 371日期：1995年6月13日 102（e）1995年6月13日PCT 1994年10月13日PCT PCT。公开号WO95 / 10903 日期1995年04月20日提供了一种能够快速建立初始采集并通过提取用于CDMA通信的接收机中的互相关分量来实现高精度跟踪的相关检测器，并且还提供了使用该相关检测器的通信系统。在初始采集期间，将接收信号21提供给匹配滤波器43.当采集判定电路45判定匹配滤波器43检测到采集时，控制切换电路42将接收信号21提供给乘法器47和48 ，并且复位VCCG 29和扩展码副本发生器30.在建立采集之后，接收的扩展码被准相干检测，并且所检测的扩展信号乘以相位超前副本和相位延迟副本。产生相关检测信号，产生相关检测信号的平方分量，相反相加，并沿时间轴平均。平均信号由接收数据的判定信号反相调制以获得相位误差信号，该判决信号是通过将接收到的扩展信号与接收到的扩展信号同步地复制一个副本而获得的，并且通过多个的芯片来补偿接收相位误差。复制发生器由相位由相位误差信号控制的时钟信号驱动。

10. 发明授权

US5590409A Transmission power control method and a transmission power control apparatus 失效
标题翻译：发送功率控制方法和发送功率控制装置
公开(公告)号：US5590409A
公开(公告)日：1996-12-31
申请号：US439463
申请日：1995-05-11
申请人： Mamoru Sawahashi , Fumiyuki Adachi
发明人： Mamoru Sawahashi , Fumiyuki Adachi
IPC分类号： H04W52/04 , H04B1/04 , H04B7/005 , H04B7/26 , H04J13/00 , H04W52/08 , H04W52/10 , H04W52/24 , H04B1/00
CPC分类号： H04W52/228 , H04B17/318 , H04W52/08 , H04W52/10 , Y02B60/50
摘要： A transmission power control method of a mobile station in a CDMA (Code Division Multiple Access) system which primarily controls transmission power of the mobile station by using a closed loop control which enables high accuracy power control. When the received power at the base station of a signal from the mobile station suddenly increases owing to the state of buildings surrounding the mobile station, the transmission power of the mobile station must be quickly reduced to prevent the interference to other mobile stations. The mobile station measures an average value of the received power per transmission power control period of a desired signal from the base station, and detects the difference .DELTA.RSSI between the current average value and that of one of the previous transmission power control periods. If .DELTA.RSSI exceeds a reference power difference .DELTA.P.sub.th, transmission power P.sub.T corresponding to .DELTA.RSSI is set by using an open loop transmission power control to quickly reduce the transmission power of the mobile station. If .DELTA.RSSI is lower than .DELTA.P.sub.th, the transmission power P.sub.T is determined in accordance with the transmission power control bit sent from the base station.
摘要翻译： CDMA（码分多址）系统中的移动台的发送功率控制方法，其主要通过使用能够进行高精度功率控制的闭环控制来控制移动台的发送功率。当来自移动台的信号的基站的接收功率由于移动台周围的建筑物的状态而突然增加时，移动台的发射功率必须快速降低以防止对其他移动台的干扰。移动站测量来自基站的期望信号的每个发送功率控制周期的接收功率的平均值，并且检测当前平均值与之前的发送功率控制周期之一的差DELTA RSSI。如果DELTA RSSI超过参考功率差DELTA Pth，则通过使用开环发送功率控制来设置对应于DELTA RSSI的发送功率PT，以快速降低移动台的发送功率。如果DELTA RSSI低于DELTA Pth，则根据从基站发送的发送功率控制比特来确定发送功率PT。

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