公开(公告)号：US06976138B2

公开(公告)日：2005-12-13

申请号：US09984675

申请日：2001-10-30

Applicant: May Suzuki ,  Takashi Aoyama

Inventor： May Suzuki ,  Takashi Aoyama

IPC: H03M13/27 ,  G11C7/10 ,  G06F12/06

CPC classification number: G11C7/1006

Abstract: The required RAM capacity is reduced by dividing an interleaving RAM in a baseband modulator into a plurality of areas and having the read side and the write side use some common areas on a time-sharing basis.

Abstract translation: 通过将基带调制器中的交织RAM划分成多个区域并使得读取侧和写入侧在分时基础上使用一些公共区域来减少所需的RAM容量。

公开(公告)号：US20100113089A1

公开(公告)日：2010-05-06

申请号：US12684256

申请日：2010-01-08

Applicant: May Suzuki ,  Taizo Yamawaki ,  Satoshi Tanaka ,  Akio Yamamoto

Inventor： May Suzuki ,  Taizo Yamawaki ,  Satoshi Tanaka ,  Akio Yamamoto

IPC: H04W88/06 ,  H04M1/00

CPC classification number: H04W88/06

Abstract: A multimode wireless communication apparatus including a radio frequency unit having controllable communication mode and a control unit for periodically making the radio frequency unit operate in a mobile telephone mode and, after predetermined time, switching the mode to a wireless LAN mode, wherein if occurrence of an incoming call event is detected when the radio frequency unit is in standby reception in the mobile telephone mode, the control unit suppresses the switching to the wireless LAN mode and determines whether the communication in the mobile telephone mode should be continued or not.

Abstract translation: 一种多模无线通信装置，包括具有可控通信模式的射频单元和用于周期性地使射频单元以移动电话模式工作的控制单元，并且在预定时间之后将模式切换到无线LAN模式，其中如果发生 当无线电频率单元在移动电话模式下处于待机接收时，检测到呼入事件，控制单元禁止切换到无线LAN模式，并确定是否应该继续移动电话模式的通信。

公开(公告)号：US06807235B2

公开(公告)日：2004-10-19

申请号：US09795110

申请日：2001-03-01

Applicant: Takashi Yano ,  May Suzuki

Inventor： Takashi Yano ,  May Suzuki

IPC: H04J1302

CPC classification number: H04W52/0229 ,  H04W52/0283 ,  Y02D70/26

Abstract: In order to effectively reduce power consumption of a terminal in a wireless communication apparatus upon packet communication, the wireless communication apparatus has a plurality of signal processing blocks having different signal processing periods; a buffer memory which links the signal processing blocks; and a clock control part which supplies or suspends a clock signal to each block. Each of the signal processing blocks watches whether or not there is data to be processed in the subsequent signal processing block. Based on the watched result, the clock control part controls an operation to supply or suspend the clock signal to the subsequent signal processing block.

Abstract translation: 为了在分组通信时有效地降低无线通信装置中的终端的功耗，无线通信装置具有具有不同的信号处理周期的多个信号处理模块; 连接信号处理块的缓冲存储器; 以及时钟控制部分，其向每个块提供或挂起时钟信号。 每个信号处理块监视在随后的信号处理块中是否存在待处理的数据。 基于观看结果，时钟控制部分控制向随后的信号处理块提供或暂停时钟信号的操作。

公开(公告)号：US07933569B2

公开(公告)日：2011-04-26

申请号：US12123164

申请日：2008-05-19

Applicant: May Suzuki ,  Kazuyuki Hori ,  Takashi Yano

Inventor： May Suzuki ,  Kazuyuki Hori ,  Takashi Yano

IPC: H01Q11/12 ,  H04B1/04

CPC classification number: H04B1/0475 ,  H03F1/3247 ,  H03F1/3282 ,  H03F1/34 ,  H03F3/189 ,  H03F3/24 ,  H03F2200/451 ,  H04B1/0483 ,  H04B2001/0433 ,  H04L7/0054

Abstract: A wireless communication device including: a transmitter including two DA converter units which convert two digital signals into analog signals; a combiner which combines the analog signals; a distributor which extracts a portion of the combined signal as a feedback signal; an AD converter which converts the feedback signal; an oscillator unit which supplies clock signals to operate the DA converter units and the AD converter; a first separation unit which separates the feedback signal converted by the AD converter into two signals; and a comparator unit which compares at least one of the two digital signals that are obtained by separating the inputted digital signal, or, at least one of the two digital signals that are separately inputted, with the feedback signal separated by the first separation unit, wherein the oscillator unit controls the output clock signals based on a result of the comparison by the comparator unit.

Abstract translation: 一种无线通信装置，包括：发射机，包括将两个数字信号转换为模拟信号的两个DA转换器单元; 组合模拟信号的组合器; 分配器，其将所述组合信号的一部分提取为反馈信号; 一个转换反馈信号的AD转换器; 提供时钟信号以操作DA转换器单元和AD转换器的振荡器单元; 第一分离单元，其将由AD转换器转换的反馈信号分离成两个信号; 以及比较器单元，其将通过分离所输入的数字信号而获得的两个数字信号中的至少一个或分离输入的两个数字信号中的至少一个与由第一分离单元分离的反馈信号进行比较， 其中所述振荡器单元基于所述比较器单元的比较结果来控制所述输出时钟信号。

公开(公告)号：US07778310B2

公开(公告)日：2010-08-17

申请号：US10869920

申请日：2004-06-18

Applicant: May Suzuki ,  Nobukazu Doi ,  Takashi Yano

Inventor： May Suzuki ,  Nobukazu Doi ,  Takashi Yano

IPC: H04B1/00

CPC classification number: H04B7/2668 ,  H04B1/7075 ,  H04B1/708 ,  H04B7/2628 ,  H04W72/042

Abstract: In a mobile communication system using a code division multiple access (CDMA) method, spreading code detection and frame/slot timing synchronization (cell search) is conducted by using a long code masked symbol. The spreading factor of the long code masked symbol is set to a value lower than spreading factors of other ordinary symbols. As a result, it becomes possible to reduce the circuit scale and power dissipation of the mobile terminal and raise the speed of cell search.

Abstract translation: 在使用码分多址（CDMA）方法的移动通信系统中，通过使用长码屏蔽符号来进行扩展码检测和帧/时隙定时同步（小区搜索）。 长码屏蔽符号的扩展因子被设置为低于其他普通符号的扩展因子的值。 结果，可以降低移动终端的电路规模和功耗，提高小区搜索的速度。

公开(公告)号：US20080233904A1

公开(公告)日：2008-09-25

申请号：US12123164

申请日：2008-05-19

Applicant: May Suzuki ,  Kazuyuki Hori ,  Takashi Yano

Inventor： May Suzuki ,  Kazuyuki Hori ,  Takashi Yano

IPC: H04B1/04

CPC classification number: H04B1/0475 ,  H03F1/3247 ,  H03F1/3282 ,  H03F1/34 ,  H03F3/189 ,  H03F3/24 ,  H03F2200/451 ,  H04B1/0483 ,  H04B2001/0433 ,  H04L7/0054

Abstract: A wireless communication device including: a transmitter including two DA converter units which convert two digital signals into analog signals; a combiner which combines the analog signals; a distributor which extracts a portion of the combined signal as a feedback signal; an AD converter which converts the feedback signal; an oscillator unit which supplies clock signals to operate the DA converter units and the AD converter; a first separation unit which separates the feedback signal converted by the AD converter into two signals; and a comparator unit which compares at least one of the two digital signals that are obtained by separating the inputted digital signal, or, at least one of the two digital signals that are separately inputted, with the feedback signal separated by the first separation unit, wherein the oscillator unit controls the output clock signals based on a result of the comparison by the comparator unit.

Abstract translation: 一种无线通信装置，包括：发射机，包括将两个数字信号转换为模拟信号的两个DA转换器单元; 组合模拟信号的组合器; 分配器，其将所述组合信号的一部分提取为反馈信号; 一个转换反馈信号的AD转换器; 提供时钟信号以操作DA转换器单元和AD转换器的振荡器单元; 第一分离单元，其将由AD转换器转换的反馈信号分离成两个信号; 以及比较器单元，其将通过分离所输入的数字信号而获得的两个数字信号中的至少一个或分离输入的两个数字信号中的至少一个与由第一分离单元分离的反馈信号进行比较， 其中所述振荡器单元基于所述比较器单元的比较结果来控制所述输出时钟信号。

公开(公告)号：US06879575B1

公开(公告)日：2005-04-12

申请号：US09518675

申请日：2000-03-03

Applicant: May Suzuki ,  Nobukazu Doi ,  Takashi Yano

Inventor： May Suzuki ,  Nobukazu Doi ,  Takashi Yano

IPC: H04B1/707 ,  H04B7/26 ,  H04J13/00 ,  H04B7/216

CPC classification number: H04B7/2668 ,  H04B1/7075 ,  H04B1/708 ,  H04B7/2628 ,  H04W72/042

Abstract: In a mobile communication system using a code division multiple access (CDMA) method, spreading code detection and frame/slot timing synchronization (cell search) is conducted by using a long code masked symbol. The spreading factor of the long code masked symbol is set to a value lower than spreading factors of other ordinary symbols. As a result, it becomes possible to reduce the circuit scale and power dissipation of the mobile terminal and raise the speed of cell search.

公开(公告)号：US20100278148A1

公开(公告)日：2010-11-04

申请号：US12836237

申请日：2010-07-14

Applicant: May Suzuki ,  Nobukazu Doi ,  Takashi Yano

Inventor： May Suzuki ,  Nobukazu Doi ,  Takashi Yano

IPC: H04W36/00

CPC classification number: H04B7/2668 ,  H04B1/7075 ,  H04B1/708 ,  H04B7/2628 ,  H04W72/042

Abstract: In a mobile communication system using a code division multiple access (CDMA) method, spreading code detection and frame/slot timing synchronization (cell search) is conducted by using a long code masked symbol. The spreading factor of the long code masked symbol is set to a value lower than spreading factors of other ordinary symbols. As a result, it becomes possible to reduce the circuit scale and power dissipation of the mobile terminal and raise the speed of cell search.

Abstract translation: 在使用码分多址（CDMA）方法的移动通信系统中，通过使用长码屏蔽符号来进行扩展码检测和帧/时隙定时同步（小区搜索）。 长码屏蔽符号的扩展因子被设置为低于其他普通符号的扩展因子的值。 结果，可以降低移动终端的电路规模和功耗，提高小区搜索的速度。

公开(公告)号：US07555058B2

公开(公告)日：2009-06-30

申请号：US11030060

申请日：2005-01-07

Applicant: Kazuyuki Hori ,  May Suzuki

Inventor： Kazuyuki Hori ,  May Suzuki

IPC: H04L25/03

CPC classification number: H04B1/0483 ,  H03F1/3282 ,  H03F1/3294 ,  H03F2200/331 ,  H04B1/62

Abstract: Disclosed are a delay locked loop circuit capable of accurately extracting nonlinear distortion superimposed on an output of a digital predistortion type transmitter, the digital predistortion type transmitter, and a wireless base station using the same. The delay locked loop circuit outputting a smoothed signal to the variable delay element, in which delay control is implemented for checking distortion occurring to the output IQ signals due to the same passing through the analog circuit by means of the variable delay element. Either the first input IQ signals or the second input IQ signals are signals generated as a result of output IQ signals Io, Qo undergoing digital-to-analog conversion, and again undergoing analog-to-digital conversion after passing through an analog circuit. In particular, an IIR filter may be used for the variable delay element.

Abstract translation: 公开了一种能够精确地提取叠加在数字预失真型发射机，数字预失真型发射机和使用其的无线基站的输出上的非线性失真的延迟锁定环路。 延迟锁定环路电路将平滑信号输出到可变延迟元件，其中实施延迟控制，用于通过借助于可变延迟元件相同地经过模拟电路来检查出现在输出IQ信号上的失真。 第一输入IQ信号或第二输入IQ信号是作为输出IQ信号Io，Qo进行数模转换的结果产生的信号，并且在通过模拟电路之后再次经历模数转换。 特别地，IIR滤波器可以用于可变延迟元件。

公开(公告)号：US07383028B2

公开(公告)日：2008-06-03

申请号：US11033905

申请日：2005-01-13

Applicant: May Suzuki ,  Kazuyuki Hori ,  Takashi Yano

Inventor： May Suzuki ,  Kazuyuki Hori ,  Takashi Yano

IPC: H01Q11/12 ,  H04B1/04

CPC classification number: H04B1/0475 ,  H03F1/3247 ,  H03F1/3282 ,  H03F1/34 ,  H03F3/189 ,  H03F3/24 ,  H03F2200/451 ,  H04B1/0483 ,  H04B2001/0433 ,  H04L7/0054

Abstract: The linearity of a transmission signal is improved in a wireless communication device by adjusting a delay difference between paths of two signals that are combined into one after modulation through the paths of different delay amounts, such as an r signal and a θ signal in EER. A transmitter includes: a DA converter unit which converts, into analog signals, separated input digital signals; a combiner which combines the analog signals obtained through the DA conversion with each other; an distributor which extracts a feedback signal; an AD converter which converts the feedback signal into a digital signal; an oscillator unit which supplies clock signals to the converters; a first separation unit which separates the feedback signal; and a comparator unit which compares the input signal and the feedback signal, wherein the oscillator unit controls the output clock signals based on a result of the comparison.

Abstract translation: 通过调整通过不同延迟量的路径（例如EER中的r信号和θ信号）组合成一个后调制的两个信号的路径之间的延迟差，在无线通信设备中改善了传输信号的线性度。 发射机包括：DA转换器单元，其将模拟信号转换成分离的输入数字信号; 组合器，其将通过DA转换获得的模拟信号彼此组合; 提取反馈信号的分配器; 将反馈信号转换为数字信号的AD转换器; 振荡器单元，向转换器提供时钟信号; 分离所述反馈信号的第一分离单元; 以及比较器单元，其比较所述输入信号和所述反馈信号，其中所述振荡器单元基于所述比较的结果来控制所述输出时钟信号。