公开(公告)号：US6144649A

公开(公告)日：2000-11-07

申请号：US807075

申请日：1997-02-27

Applicant: Brian D. Storm ,  Christopher P. La Rosa

Inventor： Brian D. Storm ,  Christopher P. La Rosa

IPC: H03K5/00 ,  H04B1/16 ,  H04B1/7075 ,  H04B1/7077 ,  H04B1/7117 ,  H04B7/26 ,  H04L7/00 ,  H04B7/216 ,  H04J13/04

CPC classification number: H04B1/70752 ,  H04B1/70756 ,  H04B1/7077 ,  H04B1/7117 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04B2201/70703 ,  H04B2201/70709

Abstract: A searcher receiver (114) includes a sample buffer (202) which stores signal samples loaded using a real time clock. A real time linear sequence generator (RT LSG) (206) stores an initial state and is clocked using the real time clock. The contents of the RT LSG are loaded into a non-real time linear sequence generator (NRT LSG) (208) when sample processing begins. Samples are correlated using a non-real time clock to allow signal processing to be uncoupled from the chip rate. The analog front end (108) may be powered down or tuned to another frequency during non-real time processing.

Abstract translation: 搜索器接收器（114）包括采样缓冲器（202），其存储使用实时时钟加载的信号样本。 实时线性序列发生器（RT LSG）（206）存储初始状态，并使用实时时钟计时。 当样本处理开始时，RT LSG的内容被加载到非实时线性序列发生器（NRT LSG）（208）中。 使用非实时时钟对样本进行相关，以使信号处理与芯片速率分离。 在非实时处理期间，模拟前端（108）可以掉电或调谐到另一频率。

公开(公告)号：US5987339A

公开(公告)日：1999-11-16

申请号：US956354

申请日：1997-10-23

Applicant: Nobuo Asano

Inventor： Nobuo Asano

IPC: G06F1/04 ,  H04B1/16 ,  H04B7/26 ,  H04M1/73 ,  H04W52/02 ,  H04Q7/20

CPC classification number: H04W52/029 ,  H03L1/00 ,  H03L7/00 ,  H04B2201/70709 ,  H04W52/0283

Abstract: A receiving portion of a radio communication device includes a circuit periodically moving into a sleep mode of operation. The circuit periodically moves out of the sleep mode of operation in response to a re-activation signal. A first clock signal is generated. Clock pulses in the first clock signal are counted. The re-activation signal is generated each time the number of the counted clock pulses in the first clock signal reaches an updatable number. A second clock signal is generated which has a frequency higher than a frequency of the first clock signal. Clock pulses in the second clock signal are counted during every time interval determined by the first clock signal. An error of the frequency of the first clock signal with respect to the frequency of the second clock signal is calculated on the basis of a result of the counting of clock pulses in the second clock signal. The updatable number is set in response to the calculated error of the frequency of the first clock signal.

Abstract translation: 无线电通信设备的接收部分包括周期性地进入睡眠操作模式的电路。 电路响应于再启动信号而周期性地移出睡眠操作模式。 产生第一时钟信号。 对第一个时钟信号中的时钟脉冲进行计数。 每当第一时钟信号中计数的时钟脉冲的数量达到可更新的数目时，就产生重新激活信号。 产生具有高于第一时钟信号的频率的频率的第二时钟信号。 在由第一时钟信号确定的每个时间间隔期间，对第二时钟信号中的时钟脉冲进行计数。 基于第二时钟信号中的时钟脉冲的计数结果计算第一时钟信号相对于第二时钟信号的频率的频率的误差。 响应于计算出的第一时钟信号的频率误差来设定可更新号码。

公开(公告)号：US5970084A

公开(公告)日：1999-10-19

申请号：US873331

申请日：1997-06-12

Applicant: Shoichiro Honda

Inventor： Shoichiro Honda

IPC: H04B1/10 ,  H04B1/707 ,  H04B1/7117 ,  H04B7/26 ,  H04W52/02 ,  H04K1/00 ,  H04B7/216

CPC classification number: H04J13/10 ,  H04B1/7073 ,  H04B1/7117 ,  H04B1/712 ,  H04B2001/70706 ,  H04B2201/70709

Abstract: A mobile communication receiver of a spread spectrum communication system has a plurality of fingers, a synthesizer for synthesizing data reproduced by the fingers, a power measurement unit for measuring power of reproduction output of the fingers and total power thereof, a error detection unit for detecting an error of output data of the synthesizer, and a control unit for controlling power on and off of the fingers based on the measurement result of the power measurement unit and the error detection result of the error detection means. Power consumption can be reduced in the range in which an error increase does not result.

Abstract translation: 扩展频谱通信系统的移动通信接收机具有多个手指，用于合成由手指重放的数据的合成器，用于测量手指的再现输出的功率的功率测量单元及其总功率，用于检测 合成器的输出数据的错误，以及用于根据功率测量单元的测量结果和错误检测装置的错误检测结果控制手指的电源的接通和关断的控制单元。 在不会产生误差增加的范围内，功耗可以降低。

公开(公告)号：US20100322116A1

公开(公告)日：2010-12-23

申请号：US12665885

申请日：2008-06-19

Applicant: Dong-Hahk Lee ,  Ra-Mi Lee ,  Seong-Soo Park ,  Sang-Shin Lee ,  Jae-Hwang Yu ,  Jong-Tae Ihm ,  Duk-Kyung Kim

Inventor： Dong-Hahk Lee ,  Ra-Mi Lee ,  Seong-Soo Park ,  Sang-Shin Lee ,  Jae-Hwang Yu ,  Jong-Tae Ihm ,  Duk-Kyung Kim

IPC: H04J3/00 ,  H04B7/216

CPC classification number: H04B1/7105 ,  H04B2201/70709

Abstract: Disclosed is a method and system for estimating an adaptive joint channel in a CDMA system based on TDD. The method includes the steps of a) receiving activity information of a mobile terminal; b) parsing the activity information, and transmitting a midamble sequence to the mobile terminal when a result of the parsing shows that the mobile terminal is in an ON state; c) conducting adaptive joint channel estimation by using the midamble sequence in the mobile terminal; and d) conducting adaptive joint detection by using a channel impulse response of the mobile terminal, obtained as a result of conducting the adaptive joint channel estimation. The method and system decreases the complexity in channel estimation and additionally increases the accuracy of channel estimation by reducing transmission power consumption and eliminating unnecessary interference.

Abstract translation: 公开了一种基于TDD来估计CDMA系统中的自适应联合信道的方法和系统。 该方法包括以下步骤：a）接收移动终端的活动信息; b）解析活动信息，并且当解析结果表明移动终端处于ON状态时，向移动终端发送midamble序列; c）通过使用移动终端中的中间码序列来进行自适应联合信道估计; 以及d）通过使用作为进行自适应联合信道估计的结果获得的移动终端的信道脉冲响应来进行自适应联合检测。 该方法和系统降低了信道估计的复杂度，并通过降低传输功耗并消除了不必要的干扰，增加了信道估计的准确性。

公开(公告)号：US07822155B2

公开(公告)日：2010-10-26

申请号：US10700855

申请日：2003-11-04

Applicant: Bengt Lindoff ,  Johan Nilsson ,  Torgny Palenius

Inventor： Bengt Lindoff ,  Johan Nilsson ,  Torgny Palenius

IPC: H03D1/04

CPC classification number: H04B1/7103 ,  H04B2201/70701 ,  H04B2201/70709

Abstract: Methods and apparatus that improve interference (I) estimation in CDMA systems in which the DPCH is sorted under a scrambling code different from the scrambling code of a channel such as the CPICH are described. In such systems, DPCH I-estimation cannot be done by measuring on the CPICH and transforming to the DPCH due to the different interference situations on the two channels. Instead, the DPCH interference is estimated by using knowledge of empty channelization codes in the alternative or secondary scrambling code that can be used for I estimation, or using symbols (e.g., control symbols on the DPCCH) on the DPCH, or searching for an empty channelization code and using a found empty code for I-estimation. These techniques improve the SIR estimate in comparison to prior techniques and hence also improve the performance of power control, increasing the system's capacity.

Abstract translation: 描述了改善其中DPCH在不同于诸如CPICH之类的信道的扰码的扰码下分类的CDMA系统中的干扰（I）估计的方法和装置。 在这种系统中，DPCH I估计不能通过在CPICH上测量并且由于两个信道上的不同干扰情况而转换到DPCH来完成。 相反，通过使用可用于I估计的替代或辅助扰码中的空信道化码的知识或者使用DPCH上的符号（例如DPCCH上的控制符号）或搜索空的信道估计来估计DPCH干扰 通道化代码，并使用找到的空代码进行I估计。 与以前的技术相比，这些技术改进了SIR估计，从而也提高了功率控制的性能，从而提高了系统的容量。

公开(公告)号：US20100208708A1

公开(公告)日：2010-08-19

申请号：US12768445

申请日：2010-04-27

Applicant: James A. Proctor, JR.

Inventor： James A. Proctor, JR.

IPC: H04B7/216

CPC classification number: H04B7/2628 ,  H04B1/7075 ,  H04B1/70754 ,  H04B2001/70706 ,  H04B2201/70703 ,  H04B2201/70709 ,  H04B2201/70715 ,  H04J13/0022 ,  H04J13/004 ,  H04J13/16 ,  H04J13/18 ,  H04L1/0007 ,  H04L1/165 ,  H04L1/1809 ,  H04L7/06 ,  H04L25/14 ,  H04L27/2601 ,  H04Q11/0428 ,  H04Q2213/13098 ,  H04Q2213/13202 ,  H04Q2213/13204 ,  H04Q2213/13209 ,  H04Q2213/13216 ,  H04Q2213/1327 ,  H04Q2213/13298 ,  H04Q2213/13332 ,  H04Q2213/1336 ,  H04Q2213/13389 ,  H04W24/00 ,  H04W28/20 ,  H04W28/22 ,  H04W56/00 ,  H04W56/0045 ,  H04W56/0075 ,  H04W72/0413 ,  H04W72/044 ,  H04W72/0446 ,  H04W72/0453 ,  H04W72/0466 ,  H04W74/00 ,  H04W74/04 ,  H04W76/28 ,  H04W84/14

Abstract: A service option overlay for a CDMA wireless communication in which multiple allocatable subchannels are defined on a reverse link by assigning different code phases of a given long pseudonoise (PN) code to each subchannel. The instantaneous bandwidth needs of each on-line subscriber unit are then met by dynamically allocating none, one, or multiple subchannels on an as needed basis for each network layer connection. The system efficiently provides a relatively large number of virtual physical connections between the subscriber units and the base stations on the reverse link for extended idle periods such as when computers connected to the subscriber units are powered on, but not presently actively sending or receiving data. These maintenance subchannels permit the base station and the subscriber units to remain in phase and time synchronism in an idle mode and also request additional channels. This in turn allows fast acquisition of additional subchannels as needed by allocating new code phase subchannels. Preferably, the code phases of the new channels are assigned according to a predetermined code phase relationship with respect to the code phase of the corresponding maintenance subchannel.

Abstract translation: 一种用于CDMA无线通信的服务选项覆盖，其中通过向每个子信道分配给定长伪噪声（PN）码的不同码相位，在反向链路上定义多个可分配子信道。 然后通过根据需要基于每个网络层连接动态分配一个，一个或多个子信道来满足每个在线订户单元的瞬时带宽需求。 系统有效地在用户单元和反向链路上的基站之间提供相对大量的虚拟物理连接，用于延长的空闲周期，例如当连接到订户单元的计算机上电时，而不是当前主动发送或接收数据。 这些维护子信道允许基站和用户单元在空闲模式下保持同步和时间同步，并且还请求附加信道。 这又允许通过分配新的码相子信道来快速获取附加的子信道。 优选地，根据相应维护子信道的码相位的预定码相位关系来分配新信道的码相位。

公开(公告)号：US20090168849A1

公开(公告)日：2009-07-02

申请号：US12060256

申请日：2008-03-31

Applicant: ALEXANDRE ROUXEL

Inventor： ALEXANDRE ROUXEL

IPC: H04B1/707

CPC classification number: H04J13/00 ,  H04B1/707 ,  H04B2201/70709 ,  H04L27/2278

Abstract: A single chip radio platform is disclosed for communicating with an RF channel. An RF front end is provided having a receive/transmit capability to receive an RF carrier modulated with digital data and convert the data to analog baseband data, and modulate an RF carrier with baseband data. A digital signal processor (DSP) engine is provided for interfacing with the RF front end to form in conjunction therewith the PHY layer, and interfacing with the MAC layer to demodulate the baseband data and in the transmit mode to generate the baseband data for modulation and transmission by the RF front end. A microcontroller unit (MCU) is provided for performing the functionality of the MAC, network and application layers and interfacing with the DSP. Clock circuitry is provided including a stable reference clock for generating a first fixed clock for providing MCU clocks for the operation of the MCU, and for providing a reference for a local oscillator at substantially the channel frequency for use by the RF front end and a DSP clock for use by the DSP, both the MCU clocks, the local oscillator and the DSP clock having the stability of the first fixed clock. Periodic power management circuitry is provided for controlling the operation of the radio platform to operate in a sleep.

Abstract translation: 公开了用于与RF信道通信的单芯片无线电平台。 提供RF前端，其具有接收/发射能力，以接收利用数字数据调制的RF载波，并将数据转换为模拟基带数据，并用基带数据调制RF载波。 提供数字信号处理器（DSP）引擎，用于与RF前端接口以与其结合形成PHY层，并与MAC层接口以解调基带数据，并在发送模式下生成用于调制的基带数据， 由射频前端传输。 提供了一个微控制器单元（MCU），用于执行MAC，网络和应用层的功能，并与DSP接口。 提供时钟电路，包括用于产生用于为MCU的操作提供MCU时钟的第一固定时钟的稳定参考时钟，以及为基本上由RF前端和DSP使用的信道频率的本地振荡器提供参考 时钟由DSP使用，MCU时钟，本地振荡器和DSP时钟都具有稳定的第一个固定时钟。 提供了周期性电源管理电路，用于控制无线电平台在睡眠中操作的操作。

公开(公告)号：US20090168848A1

公开(公告)日：2009-07-02

申请号：US11968113

申请日：2007-12-31

Applicant: Nicolas CONSTANTINIDIS ,  Guillaume CRINON ,  Alexandre ROUXEL ,  Alan WESTWICK ,  Gary FRANZOSA

Inventor： Nicolas CONSTANTINIDIS ,  Guillaume CRINON ,  Alexandre ROUXEL ,  Alan WESTWICK ,  Gary FRANZOSA

IPC: H04B1/707

CPC classification number: H04B1/707 ,  H04B1/69 ,  H04B2201/70709

Abstract: A single chip radio platform is disclosed for communicating with an RE channel. An RF front end is provided having a receive/transmit capability to receive an RF carrier modulated with digital data and convert the data to analog baseband data, and modulate an RF carrier with baseband data. A digital signal processor (DSP) engine is provided for interfacing with the RF front end to form in conjunction therewith the PHY layer, and interfacing with the MAC layer to demodulate the baseband data and in the transmit mode to generate the baseband data for modulation and transmission by the RF front end. A microcontroller unit (MCU) is provided for performing the functionality of the MAC, network and application layers and interfacing with the DSP. Clock circuitry is provided including a stable reference clock for generating a first fixed clock for providing MCU clocks for the operation of the MCU, and for providing a reference for a local oscillator at substantially the channel frequency for use by the RF front end and a DSP clock for use by the DSP, both the MCU clocks, the local oscillator and the DSP clock having the stability of the first fixed clock. Periodic power management circuitry is provided for controlling the operation of the radio platform to operate in a sleep.

Abstract translation: 公开了用于与RE信道通信的单芯片无线电平台。 提供RF前端，其具有接收/发射能力，以接收利用数字数据调制的RF载波，并将数据转换为模拟基带数据，并用基带数据调制RF载波。 提供数字信号处理器（DSP）引擎，用于与RF前端接口以与其结合形成PHY层，并与MAC层接口以解调基带数据，并在发送模式下生成用于调制的基带数据， 由射频前端传输。 提供了一个微控制器单元（MCU），用于执行MAC，网络和应用层的功能，并与DSP接口。 提供时钟电路，包括用于产生用于为MCU的操作提供MCU时钟的第一固定时钟的稳定参考时钟，以及为基本上由RF前端和DSP使用的信道频率的本地振荡器提供参考 时钟由DSP使用，MCU时钟，本地振荡器和DSP时钟都具有稳定的第一个固定时钟。 提供定期功率管理电路用于控制无线电平台在睡眠中操作的操作。

公开(公告)号：US07471715B2

公开(公告)日：2008-12-30

申请号：US11907423

申请日：2007-10-12

Applicant: Shigeyuki Sudo ,  Osamu Hasegawa ,  Toshiya Eguchi

Inventor： Shigeyuki Sudo ,  Osamu Hasegawa ,  Toshiya Eguchi

IPC: H04L27/00

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.

公开(公告)号：US07447256B2

公开(公告)日：2008-11-04

申请号：US11898944

申请日：2007-09-18

Applicant: Shigeyuki Sudo ,  Osamu Hasegawa ,  Toshiya Eguchi

Inventor： Shigeyuki Sudo ,  Osamu Hasegawa ,  Toshiya Eguchi

IPC: H04L27/00

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 OV(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OV（d）时，开始通过耙式解调，解复用和解扰器单元的解调操作，并在接收时间期间继续。