公开(公告)号：US6067292A

公开(公告)日：2000-05-23

申请号：US841316

申请日：1997-04-30

Applicant: Howard C. Huang ,  Chih-Lin I ,  Stephan ten Brink ,  Giovanni Vannucci

Inventor： Howard C. Huang ,  Chih-Lin I ,  Stephan ten Brink ,  Giovanni Vannucci

IPC: H04B1/707 ,  H04B7/26 ,  H04L7/00 ,  H04J13/00

CPC classification number: H04B1/7107 ,  H04B1/71072 ,  H04B1/7115 ,  H04B1/7117 ,  H04B1/712 ,  H04B2001/71077 ,  H04B2201/70701 ,  H04B2201/70709

Abstract: A Code-Division Multiple Access (CDMA) receiver removes the pilot signal from the received signal. The pilot signal is defined by its multipath parameters (amplitudes, phase shift and delays) and its signature sequence. Since this information is known at the user's receiver terminal (i.e., handset), the pilot signals of the interfering multipath components of the baseband received signal are detected and removed prior to demodulation of the desired multipath component. The pilot signal may be cancelled prior to or following the data accumulation stage. The pilot signal cancellation can be switched on and off depending on the detected path signal level.

Abstract translation: 码分多址（CDMA）接收机从接收信号中去除导频信号。 导频信号由其多径参数（幅度，相移和延迟）及其签名序列定义。 由于该信息在用户的接收机终端（即，手机）处是已知的，所以在解调期望的多路径分量之前检测和去除基带接收信号的干扰多径分量的导频信号。 可以在数据累积阶段之前或之后取消导频信号。 导频信号消除可以根据检测到的路径信号电平进行接通和关断。

公开(公告)号：US5982811A

公开(公告)日：1999-11-09

申请号：US883421

申请日：1997-06-26

Applicant: Daniel David Harrison ,  Jerome Johnson Tiemann

Inventor： Daniel David Harrison ,  Jerome Johnson Tiemann

IPC: H03M1/12 ,  G01S1/00 ,  G01S5/00 ,  G01S19/09 ,  G01S19/24 ,  G01S19/29 ,  G01S19/30 ,  G01S19/34 ,  G01S19/37 ,  G01S19/42 ,  G06F17/15 ,  H04B1/16 ,  H04B1/708 ,  H04B1/709 ,  H04B1/7107 ,  H04B7/26 ,  H04W52/02 ,  H04B15/00 ,  H03D1/00 ,  H03B7/185

CPC classification number: H04B1/708 ,  G01S19/09 ,  G01S19/29 ,  G01S19/30 ,  G01S19/34 ,  G01S19/37 ,  G01S5/0027 ,  G01S5/0036 ,  G06F17/15 ,  H04B1/709 ,  H04B1/71075 ,  G01S19/42 ,  G01S5/0054 ,  H04B2201/70709 ,  H04W52/0283

Abstract: A direct sequence spread spectrum receiver samples an incoming signal at a low non-integer sample rate relative to the input data rate. The sample rate is an integer rate relative to a defined data segment. As multiple segments are sampled, the non-integer sample rate causes bit/chip samples to process relative to the incoming data. Because the sample rate is an integer relative to a data segment, the samples are substantially stationary relative to each segment. Such a method is useful in global positioning satellite (GPS) signal processing wherein the time to first fix is minimized by having to correlate fewer sample points in the acquisition process.

Abstract translation: 直接序列扩频接收机以相对于输入数据速率的低非整数采样率对输入信号进行采样。 采样率是相对于定义的数据段的整数。 当多个段被采样时，非整数采样率使得比特/码片样本相对于输入数据进行处理。 由于采样率是相对于数据段的整数，所以样本相对于每个段基本上是静止的。 这种方法在全球定位卫星（GPS）信号处理中是有用的，其中通过在采集过程中必须使更少的采样点相关联来最小化首次固定的时间。

公开(公告)号：US5896304A

公开(公告)日：1999-04-20

申请号：US883161

申请日：1997-06-26

Applicant: Jerome Johnson Tiemann ,  Daniel David Harrison

Inventor： Jerome Johnson Tiemann ,  Daniel David Harrison

IPC: G01S1/00 ,  G01S5/00 ,  G01S5/14 ,  G01S19/29 ,  G01S19/30 ,  G01S19/34 ,  G01S19/37 ,  G01S19/42 ,  G06F17/15 ,  H04B1/16 ,  H04B1/707 ,  H04B1/708 ,  H04B1/709 ,  H04B1/7107 ,  G06J1/00

CPC classification number: H04B1/708 ,  G01S19/29 ,  G01S19/30 ,  G01S19/34 ,  G01S19/37 ,  G01S5/0027 ,  G01S5/0036 ,  G06F17/15 ,  H04B1/707 ,  H04B1/709 ,  H04B1/71075 ,  G01S19/42 ,  G01S5/0054 ,  H04B2201/70709

Abstract: Correlation between a pair of digital signal segments is measured by apparatus including a plurality of multipliers. Each of the multipliers produces the product of a respective sample of each one of the signal segments. The outputs of a plurality of digital-to-analog (D/A) converters are coupled to a summer, while each respective one of the multipliers is coupled to the input of a respective one of the D/A converts. The summer produces an analog output signal equal to the sum of the analog output signals produced by the plurality of D/A converter.

Abstract translation: 一对数字信号段之间的相关性由包括多个乘法器的装置测量。 每个乘法器产生每个信号段的相应样本的乘积。 多个数模（D / A）转换器的输出耦合到加法器，而每个乘法器中的每一个耦合到D / A转换器的相应一个的输入端。 夏天产生等于由多个D / A转换器产生的模拟输出信号之和的模拟输出信号。

公开(公告)号：US5790534A

公开(公告)日：1998-08-04

申请号：US716997

申请日：1996-09-20

Applicant: Ismo Kokko ,  Kari Rikkinen

Inventor： Ismo Kokko ,  Kari Rikkinen

IPC: H04J13/00 ,  H04B7/26 ,  H04L12/56 ,  H04W28/14 ,  H04W72/04 ,  H04W76/02 ,  H04W84/04 ,  H04J13/04

CPC classification number: H04W28/14 ,  H04B2201/70709 ,  H04W72/1221 ,  H04W76/02 ,  H04W84/042

Abstract: A method for operating a cellular communications system of a type that includes a first type of terminal having real-time transmission needs and a second type of terminal having nonreal-time transmission needs. The method includes the steps of (a) determining at periodic intervals a total amount of capacity required to service the first type of terminals; (b) subtracting the determined amount from a current maximum capacity; and (c) allocating all or some of the remaining capacity, if any, to one or more of the second type of terminals.

公开(公告)号：US08571153B2

公开(公告)日：2013-10-29

申请号：US12759816

申请日：2010-04-14

Applicant: Charles Abraham

Inventor： Charles Abraham

IPC: H04B1/10

CPC classification number: H04B7/1851 ,  G01S19/21 ,  H04B1/3805 ,  H04B2201/70709 ,  H04B2201/709709

Abstract: A method and apparatus for mitigating interference in a satellite signal receiver is described. The satellite signal receiver receives satellite signals from a plurality of satellites. In one example, a control signal is transmitted to the satellite signal receiver upon occurrence of data transmission from a wireless transceiver operating in proximity to the satellite signal receiver. Signal integration within the satellite signal receiver is gated in response to the control signal. In another example, one or more values of satellite signal samples are selected from a plurality of possible values. Signal integration within the satellite signal receiver is gated in response to a percentage of satellite signal samples taken over a predefined period exceeding a predefined threshold. In yet another example, a gain setting of an automatic gain control circuit within the satellite signal receiver is adjusted in response to detection of interference.

Abstract translation: 描述了用于减轻卫星信号接收机中的干扰的方法和装置。 卫星信号接收机从多个卫星接收卫星信号。 在一个示例中，当从邻近卫星信号接收机操作的无线收发器发生数据传输时，控制信号被发送到卫星信号接收机。 卫星信号接收机中的信号积分响应于控制信号而选通。 在另一示例中，从多个可能值中选择卫星信号样本的一个或多个值。 卫星信号接收机内的信号积分响应于在超过预定阈值的预定义周期内拍摄的卫星信号样本的百分比来选通。 在另一示例中，响应于干扰的检测来调整卫星信号接收机内的自动增益控制电路的增益设置。

公开(公告)号：US08325782B1

公开(公告)日：2012-12-04

申请号：US12403929

申请日：2009-03-13

Applicant: David Wright

Inventor： David Wright

IPC: H04B1/00

CPC classification number: H04B1/707 ,  H04B2201/70709 ,  H04J13/0022 ,  H04J13/10

Abstract: Communication circuitry uses a combination of Pseudo-Noise (PN) coded and non-PN coded transmission periods to represent different data values. In one embodiment, a number of data values are encoded into a smaller second number of encoded ternary values. The Pseudo-Noise (PN) codes are transmitted representing some of the encoded ternary values and no transmitted PN codes represent other encoded ternary values. The throughput of spread spectrum radio systems is increased by representing data values in fewer spread spectrum time slots.

Abstract translation: 通信电路使用伪噪声（PN）编码和非PN编码的传输周期的组合来表示不同的数据值。 在一个实施例中，将多个数据值编码为较小的第二数量的编码三进制值。 发送代表一些编码三进制值的伪噪声（PN）码，并且没有发送的PN码表示其它编码的三进制值。 通过在较少的扩展频谱时隙中表示数据值来增加扩频无线电系统的吞吐量。

公开(公告)号：US08311080B2

公开(公告)日：2012-11-13

申请号：US12225705

申请日：2007-03-27

Applicant: Kazunori Sato

Inventor： Kazunori Sato

IPC: H04B1/00

CPC classification number: H04B1/70755 ,  H04B2201/70701 ,  H04B2201/70709

Abstract: Disclosed is a mobile communication terminal employing a code division multiple access scheme, in which when it is decided that the common channel level is equal to or higher than a third threshold (common channel level threshold), an RLF decision control unit compares the SIR data with a first threshold and a second threshold to decide in sync state/out-of sync state between the local spread code and the reception spread code and outputs the decision signal. When it is decided that the common channel level is lower than the third threshold, the first threshold and the second threshold are set to the same value. In this state, when it is decided that the level of the SIR data is lower than the first threshold (=second threshold), the decision signal corresponding to an out-of sync state is output immediately after a predetermined delay time elapses, thereby reducing the power dissipation.

Abstract translation: 公开了采用码分多址方式的移动通信终端，其中当确定公共信道电平等于或高于第三阈值（公共信道电平阈值）时，RLF判定控制单元将SIR数据 具有第一阈值和第二阈值，以决定本地扩展码和接收扩展码之间的同步状态/不同步状态，并输出判定信号。 当确定公共信道级别低于第三阈值时，将第一阈值和第二阈值设置为相同的值。 在这种状态下，当判定SIR数据的电平低于第一阈值（=第二阈值）时，在经过预定的延迟时间之后立即输出对应于不同步状态的判定信号，从而减少 功耗。

公开(公告)号：US08130816B2

公开(公告)日：2012-03-06

申请号：US12275309

申请日：2008-11-21

Applicant: Shigeyuki Sudo ,  Osamu Hasegawa ,  Toshiya Eguchi

Inventor： Shigeyuki Sudo ,  Osamu Hasegawa ,  Toshiya Eguchi

IPC: H04B1/00

CPC classification number: H04B1/70756 ,  H04B1/707 ,  H04B1/7075 ,  H04B2201/70709 ,  H04W52/029 ,  Y02D70/26 ,  Y02D70/40

Abstract: A receiver for the CDMA system which reduces power consumption during a suspension period of intermittent receiving operation by monitoring a suspension period by a low-power timer so that a VC-TCXO, reference signal group generation and receiving units are turned off and a modem unit is set to a sleep state. Upon resumption of receiving operation, a high-accuracy timer is started to count a time period and part of a received signal is stored. A PN code phase of stored data is calculated during the time period to obtain an indication value for phase deviation. State vectors for short and long codes and a further reception time are calculated based on the indication value. When the high-accuracy timer counts the time period and produces 0V(d), demodulation operation by a rake demodulation, demultiplexing, and descrambler units is started and is continued during the reception time.

Abstract translation: 一种用于CDMA系统的接收机，其通过由低功率定时器监视暂停时段来减少在间歇接收操作的暂停时间段期间的功耗，从而关闭VC-TCXO，参考信号组生成和接收单元以及调制解调器单元 被设置为睡眠状态。 在恢复接收操作时，开始高精度定时器对一段时间进行计数，并存储接收信号的一部分。 在该时间段内计算存储数据的PN码相位，以获得相位偏差的指示值。 基于指示值计算短码和长码的状态向量和另外的接收时间。 当高精度定时器对时间段进行计数并产生0V（d）时，起动解调，解复用和解扰器单元的解调操作开始并且在接收时间期间继续。

公开(公告)号：US07940752B2

公开(公告)日：2011-05-10

申请号：US11787014

申请日：2007-04-13

Applicant: Dong-Ryeol Ryu ,  Hi-Chan Moon ,  Yoo-Chang Eun

Inventor： Dong-Ryeol Ryu ,  Hi-Chan Moon ,  Yoo-Chang Eun

IPC: H04L12/60 ,  H04Q11/00

CPC classification number: H04B1/7117 ,  H04B2201/70709 ,  H04W52/0229 ,  Y02D70/00 ,  Y02D70/1224 ,  Y02D70/1242 ,  Y02D70/24 ,  Y02D70/25 ,  Y02D70/40

Abstract: A rake reception apparatus for determining whether a paging channel is received in a mobile terminal using a Discontinuous Reception (DRX) mode. A searcher searches for a multi-path signal using a received signal output from a Radio Frequency (RF) part, and calculates an energy value for each hypothesis. A demodulator demodulates a Paging Indicator (PI) for a hypothesis for which an energy value calculated by the searcher exceeds a valid path threshold. A controller determines whether a paging channel is received, according to the demodulated signal output from the demodulator, and performs finger allocation using a multi-path search of the searcher if it is determined that the paging channel is transmitted.

Abstract translation: 一种用于确定在使用不连续接收（DRX）模式的移动终端中是否接收到寻呼信道的耙式接收装置。 搜索者使用从射频（RF）部分输出的接收信号来搜索多径信号，并且计算每个假设的能量值。 解调器解调寻呼指示符（PI），用于由搜索者计算的能量值超过有效路径阈值的假设。 控制器根据从解调器输出的解调信号来确定是否接收到寻呼信道，并且如果确定寻呼信道被发送，则使用搜索者的多路径搜索来执行手指分配。

公开(公告)号：US20100203827A1

公开(公告)日：2010-08-12

申请号：US12759816

申请日：2010-04-14

Applicant: Charles Abraham

Inventor： Charles Abraham

IPC: H04B7/185

CPC classification number: H04B7/1851 ,  G01S19/21 ,  H04B1/3805 ,  H04B2201/70709 ,  H04B2201/709709

Abstract: A method and apparatus for mitigating interference in a satellite signal receiver is described. The satellite signal receiver receives satellite signals from a plurality of satellites. In one example, data transmission of a wireless transceiver operating in proximity to the satellite signal receiver is monitored. A control signal is transmitted to the satellite signal receiver upon occurrence of data transmission from the wireless transceiver. Signal integration within the satellite signal receiver is then gated is response to the control signal. In another example, one or more values of satellite signal samples are selected from a plurality of possible values. A percentage of satellite signal samples having the one or more selected values is monitored over a predefined period. Signal integration within the satellite signal receiver is gated in response to the percentage exceeding a predefined threshold. In yet another example, a gain setting of an automatic gain control circuit within the satellite signal receiver is adjusted in response to detection of interference.

Abstract translation: 描述了用于减轻卫星信号接收机中的干扰的方法和装置。 卫星信号接收机从多个卫星接收卫星信号。 在一个示例中，监视在卫星信号接收机附近操作的无线收发器的数据传输。 当从无线收发器发送数据传输时，控制信号被发送到卫星信号接收机。 然后，卫星信号接收机内的信号积分是对控制信号的响应。 在另一示例中，从多个可能值中选择卫星信号样本的一个或多个值。 在预定义的时间段内监视具有一个或多个所选值的卫星信号样本的百分比。 响应于超过预定阈值的百分比来选通卫星信号接收机内的信号整合。 在另一示例中，响应于干扰的检测来调整卫星信号接收机内的自动增益控制电路的增益设置。