公开(公告)号：US07505438B2

公开(公告)日：2009-03-17

申请号：US10979935

申请日：2004-11-02

Applicant: Daniel R. Tayloe ,  Chih-Ming J. Chiang ,  Mark H. Kaya

Inventor： Daniel R. Tayloe ,  Chih-Ming J. Chiang ,  Mark H. Kaya

IPC: H04B7/216

CPC classification number: H04B1/70755 ,  H04B2201/70706

Abstract: A CDMA system according to an embodiment of the invention employs a technique for power optimized user loading that obtains a desired allocation of different radio configuration calls. The technique takes advantage of the relatively low power requirements of RC3 calls for low load conditions, while increasing the number of RC4 calls for high load conditions. As the load increases, the percentage of RC4 calls increases while the percentage of RC3 calls decreases. The technique strives to minimize overall power consumption in the system for all call load conditions, by maximizing the number of RC3 calls at any given time while keeping Walsh code resources available for both new calls and hand-in traffic.

Abstract translation: 根据本发明的实施例的CDMA系统采用用于功率优化的用户加载的技术，其获得不同无线电配置呼叫的期望分配。 该技术利用了RC3呼叫对低负载条件的相对较低的功率要求，同时增加了RC4呼叫的高负载条件数量。 随着负载的增加，RC4呼叫的百分比增加，而RC3呼叫的百分比减少。 该技术旨在通过在任何给定时间最大化RC3呼叫的数量，同时保持沃尔什码资源可用于新呼叫和手动流量，从而最大限度地减少系统中对于所有呼叫负载条件的总体功耗。

公开(公告)号：US07499501B2

公开(公告)日：2009-03-03

申请号：US11109464

申请日：2005-04-18

Applicant: Wonzoo Chung ,  Christopher D. Long ,  Thomas J. Endres

Inventor： Wonzoo Chung ,  Christopher D. Long ,  Thomas J. Endres

IPC: H04B1/38

CPC classification number: H03F1/3247 ,  H04B2201/70706

Abstract: Compensation methods and apparatus are disclosed for mitigating non-linear distortion of high power amplifiers used in communication transmitters, based on the minimization of the symbol error, in particular, for communication systems transmitting data embedded in existing co-channel signals. To overcome the difficulty of constructing pre-distortion mapping from the symbol error, an adaptive algorithm is disclosed to update compensation parameters for pre-distortion mapping. Another method exploits a test signal interval in the co-channel signal. During a known constant co-channel signal, distortion is estimated as a complex number and used to construct compensation parameters. The latter is further expanded by employing the adaptive algorithm for the non-test signal intervals.

Abstract translation: 公开了用于减轻通信发射机中使用的大功率放大器的非线性失真的补偿方法和装置，其基于符号错误的最小化，特别是用于传输嵌入在现有的同频道信号中的数据的通信系统。 为了克服从符号误差构建预失真映射的难度，公开了一种自适应算法来更新用于预失真映射的补偿参数。 另一种方法利用同频道信号中的测试信号间隔。 在已知的恒定同频道信号期间，将失真估计为复数，并用于构造补偿参数。 通过采用非测试信号间隔的自适应算法进一步扩展后者。

公开(公告)号：US20090015325A1

公开(公告)日：2009-01-15

申请号：US11662317

申请日：2005-09-08

Applicant: Nicholas Archer

Inventor： Nicholas Archer

IPC: H03F1/26

CPC classification number: H03F1/3241 ,  H03F3/24 ,  H03F2200/66 ,  H03G11/00 ,  H04B1/0475 ,  H04B2201/70706

Abstract: Iterative pre-conditioning of an electrical signal for supply to an amplifier, comprising: a first pre-conditioning iteration comprising limiting the amplitude of the electrical signal to produce a limited signal; generating a difference signal for subtracting the electrical signal from the limited signal; and generating an output signal by subtracting the difference signal from the limited signal; at least one further iteration comprising the steps of: Limiting the amplitude of the output signal of the previous iteration to produce a subsequent limited signal; generating a subsequent difference signal by subtracting the electrical signal from the subsequent limited signal; and generating an output signal by subtracting the subsequent difference signal from the subsequent limited signal.

公开(公告)号：US20080305824A1

公开(公告)日：2008-12-11

申请号：US12106246

申请日：2008-04-18

Applicant: John W. Haim ,  Kurt G. Vetter

Inventor： John W. Haim ,  Kurt G. Vetter

IPC: H04Q7/20

CPC classification number: H04W52/246 ,  H04B2201/70706 ,  H04W52/146 ,  H04W52/367 ,  H04W52/50 ,  H04W52/52 ,  Y02D70/10 ,  Y02D70/14

Abstract: A method and apparatus are provided for controlling transmit power with an estimated value of cubic metric (CM) and/or peak-to-average ratio (PAR). Preferably, the method is applied in determining a value for Maximum Power Reduction (MPR) for computing maximum-MPR or minimum-MPR, by estimating CM and/or PAR from signal parameters. The method of estimating CM and/or PAR is applicable to any multicode signal.

Abstract translation: 提供了一种方法和装置，用于以估计的立方度量值（CM）和/或峰均比（PAR）来控制发射功率。 优选地，通过从信号参数估计CM和/或PAR，该方法被应用于确定用于计算最大MPR或最小MPR的最大功率减小（MPR）的值。 估计CM和/或PAR的方法适用于任何多码信号。

公开(公告)号：US07457632B2

公开(公告)日：2008-11-25

申请号：US10591503

申请日：2005-03-01

Applicant: Kenki Takagi ,  Kenichi Ito ,  Takahiro Yasaki ,  Takanori Mikoshiba

Inventor： Kenki Takagi ,  Kenichi Ito ,  Takahiro Yasaki ,  Takanori Mikoshiba

IPC: H04Q7/20

CPC classification number: H04W52/281 ,  H04B2201/70706 ,  H04W52/346

Abstract: A wireless base station unit (100) monitors total transmission power, which is a sum of transmission power to all of mobile station terminals (200-203) connected for communication. When the total transmission power exceeds a first threshold value, which is a criterion for judging whether to reduce the transmission power or not, an upper limit value of the transmission power to the mobile station terminal at the lowest priority level is reduced by a prescribed quantity. When the total transmission power exceeds a second threshold value, which is larger than the first threshold value, communication connection with the mobile station terminal at the lowest priority level is cut.

Abstract translation: 无线基站单元（100）监视作为连接用于通信的所有移动台终端（200-203）的发送功率之和的总发送功率。 当总发送功率超过用于判断是否降低发送功率的标准的第一阈值时，向最低优先级的移动台终端发送的发送功率的上限值减少规定量 。 当总发射功率超过大于第一阈值的第二阈值时，与最低优先级的移动台终端的通信连接被切断。

公开(公告)号：US07376114B2

公开(公告)日：2008-05-20

申请号：US10272660

申请日：2002-10-17

Applicant: Kazuo Nagatani ,  Yasuyuki Oishi ,  Hidenobu Fukumasa ,  Hajime Hamada ,  Yoshihiko Asano

Inventor： Kazuo Nagatani ,  Yasuyuki Oishi ,  Hidenobu Fukumasa ,  Hajime Hamada ,  Yoshihiko Asano

IPC: H04L5/12 ,  H04L27/12 ,  H04B7/216 ,  H04J13/00

CPC classification number: H04J13/0003 ,  H04B1/707 ,  H04B2201/70706 ,  H04J13/0051 ,  H04J13/18

Abstract: A code multiplexing transmitting apparatus spread-spectrum modulates transmission data of a plurality of channels by spreading codes that differ from one another, combines the spread-spectrum signals of each of the channels and transmits the resultant spread-spectrum modulated signal. A spread-spectrum modulating unit for each channel includes a phase shifter for shifting, by a predetermined angle channel by channel, the phase of a position vector of the spread-spectrum modulated signal of each channel. As the result of such phase control, the phases of pilot signal portions of the spread-spectrum modulated signals of the respective channels are shifted relative to one another so that the peak values of the code-multiplexed signal can be suppressed.

Abstract translation: 扩频编码多路复用发送装置通过扩展彼此不同的码来对多个信道的发送数据进行扩频调制，合成各个信道的扩频信号，并发送合成的扩频调制信号。 用于每个通道的扩频调制单元包括移相器，用于以预定的角度逐个通道移位每个通道的扩频调制信号的位置矢量的相位。 作为这种相位控制的结果，各通道的扩频调制信号的导频信号部分的相位彼此相对移位，从而可以抑制码复用信号的峰值。

公开(公告)号：US20080095284A1

公开(公告)日：2008-04-24

申请号：US11829405

申请日：2007-07-27

Applicant: Kazuyuki HORI ,  Hideaki Arai ,  Shouhei Murakami

Inventor： Kazuyuki HORI ,  Hideaki Arai ,  Shouhei Murakami

IPC: H04B1/10

CPC classification number: H04B1/707 ,  H04B2201/70706 ,  H04L27/2624

Abstract: A peak factor reduction unit that never allow peak factor reproduction even when interpolation is done in a succeeding stage. The unit detects a local maximum value of amplitude components from an input complex signal and supplies a complex signal that passes a band limiting baseband filter and an interpolation filter to a correction signal generation unit for generating a correction signal used for peak factor reduction and reduces a peak factor of the input complex signal with use of the correction signal generated from an interpolated complex signal.

Abstract translation: 峰值因子降低单元，即使在后续阶段进行插值，也不允许峰值因子再现。 该单元从输入复合信号中检测振幅分量的局部最大值，并将通过带限基带滤波器和内插滤波器的复信号提供给校正信号生成单元，用于产生用于峰值因子减小的校正信号，并减少 使用从内插复数信号生成的校正信号的输入复信号的峰值因子。

公开(公告)号：US20080013494A1

公开(公告)日：2008-01-17

申请号：US11768863

申请日：2007-06-26

Applicant: Stein Lundby ,  Edward Tiedemann ,  Jack Holtzman ,  Daisuke Terasawa

Inventor： Stein Lundby ,  Edward Tiedemann ,  Jack Holtzman ,  Daisuke Terasawa

IPC: H04Q7/00

CPC classification number: H04W52/36 ,  H04B1/707 ,  H04B2201/70706 ,  H04B2201/709709

Abstract: The invention is a method for limiting the peak transmit power in a CDMA communication system. At least one of first and second high transmit power regions are separated into a plurality of high transmit power subregions. The high transmit power subregions of the plurality of high subregions are shifted by time offsets of differing durations to provide a plurality of time offset subregions. First and second low transmit power regions are also provided. At least one of the first and second low transmit power regions is also separated into a plurality of transmit power subregions and the low transmit power subregions are shifted by time offsets of differing time durations. The subregions can be time offset by a predetermined time duration or by a random time duration.

Abstract translation: 本发明是限制CDMA通信系统中的峰值发射功率的方法。 第一和第二高发射功率区域中的至少一个被分离成多个高发射功率子区域。 多个高次区域中的高发射功率子区域被不同持续时间的时间偏移移位以提供多个时间偏移子区域。 还提供了第一和第二低发射功率区域。 第一和第二低发射功率区域中的至少一个也被分离成多个发射功率子区域，并且低发射功率子区域被不同持续时间的时间偏移量偏移。 这些子区域可以被时间偏移预定的持续时间或随机的持续时间。

公开(公告)号：US07289423B2

公开(公告)日：2007-10-30

申请号：US10472493

申请日：2002-08-21

Applicant: Kazuhito Niwano

Inventor： Kazuhito Niwano

IPC: H04J11/00

CPC classification number: H04B1/707 ,  H04B2201/70706 ,  H04B2201/709709

Abstract: When a scrambler (54) performs IQ multiplexing of output signals from a spreader 52 and a distributor 53 in order to generate a complex signal (I signal and Q signal), amplitude coefficients βcc(I) and βcc(Q) are determined in accordance with signal powers on I axis and Q axis.

Abstract translation: 为了产生复数信号（I信号和Q信号），加扰器（54）执行来自扩展器52和分配器53的输出信号的IQ多路复用，根据该信号确定振幅系数betacc（I）和betacc（Q） 信号功率在I轴和Q轴上。

公开(公告)号：US07286619B2

公开(公告)日：2007-10-23

申请号：US10390775

申请日：2003-03-19

Applicant: Motomitsu Yano

Inventor： Motomitsu Yano

IPC: H04L1/02

CPC classification number: H04B1/712 ,  H04B2201/70706

Abstract: The SIR values of multi-paths obtained by a transmission path estimator are accumulated by an integrator at very cycle of a pilot signal, an average value for sufficiently long period is calculated by an average value calculator, a reference value is divided by a divider and applied as a control coefficient to multipliers, where it is multiplied by the SIR values, and the weight values of multi-paths are obtained. As for the despreaded data from a despreading unit, the timing of all data is synchronized in buffers, the data is complex multiplied by the above-mentioned weight values in multipliers, and RAKE is synthesized by adding in an adder, and outputted as final demodulated data to a soft decision unit.

Abstract translation: 由传输路径估计器获得的多路径的SIR值由导频信号的非常周期的积分器积累，通过平均值计算器计算足够长的周期的平均值，将参考值除以分频器， 作为控制系数应用于乘法器，其中乘以SIR值，并且获得多路径的权重值。 对于来自解扩单元的解扩数据，所有数据的定时在缓冲器中同步，数据复乘乘以乘法器中的上述加权值，并且RAKE通过在加法器中加法合成，并作为最终解调 数据到软判决单元。