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1. 发明申请

WO2005099205A1 METHOD AND APPARATUS FOR ROBUST AUTOMATIC FREQUENCY CONTROL IN CDMA SYSTEMS WITH CONSTANT PILOT SIGNALS 审中-公开
标题翻译： CDMA系统中稳定自动频率控制的方法与装置
公开(公告)号：WO2005099205A1
公开(公告)日：2005-10-20
申请号：PCT/US2004/006807
申请日：2004-03-08
申请人： THOMSON LICENSING S.A. , GAO, Wen , KOSTIC, Zoran , KEEL, Alton, Shelbourne
发明人： GAO, Wen , KOSTIC, Zoran , KEEL, Alton, Shelbourne
IPC分类号： H04L27/00
CPC分类号： H03J7/04 , H03J2200/02 , H04L27/0014 , H04L2027/0055
摘要： There is provided a method for generating an error signal for an automatic frequency control (AFC) loop in a Code Division Multiple Access (CDMA) system. Sign information relating to phase differences in received pilot signals is accumulated. In one embodiment, the accumulated sign information is compared against predetermined threshold levels. The error signal is generated when at least one of the predetermined threshold levels is satisfied. In a second embodiment, the accumulated sign information is decimated. An output of the decimating step is utilized as the error signal for the AFC loop.
摘要翻译：提供了一种用于在码分多址（CDMA）系统中为自动频率控制（AFC）环路产生误差信号的方法。累积与接收到的导频信号中的相位差有关的符号信息。在一个实施例中，将累积的符号信息与预定阈值水平进行比较。当满足预定阈值水平中的至少一个时产生误差信号。在第二实施例中，累积的符号信息被抽取。抽取步骤的输出被用作AFC循环的误差信号。

2. 发明申请

WO2003081827A3 METHOD AND APPARATUS FOR INDICATING THE PRESENCE OF A WLAN 审中-公开
公开(公告)号：WO2003081827A3
公开(公告)日：2003-10-02
申请号：PCT/US2003/006764
申请日：2003-03-05
申请人： THOMSON LICENSING S.A. , RAMASWAMY, Kumar , LITWIN, Louis, Robert , KNUTSON, Paul, Gothard , GAO, Wen , WANG, Charles, Chuanming
发明人： RAMASWAMY, Kumar , LITWIN, Louis, Robert , KNUTSON, Paul, Gothard , GAO, Wen , WANG, Charles, Chuanming
IPC分类号： H04Q7/24
摘要： A method and apparatus for detecting the presence of a wireless local area network (WLAN) (104) detects at least one signature sequence in a radio frequency (RF) signal associated with a WLAN (104). The present invention indicates the presence of a WLAN (104) in response to the detection of the at least one signature sequence in the RF signal.

3. 发明申请

WO2003081383A3 METHOD AND APPARATUS FOR INDICATING THE PRESENCE OF A WIRELESS LOCAL AREA NETWORK BY DETECTING ENERGY FLUCTUATIONS 审中-公开
公开(公告)号：WO2003081383A3
公开(公告)日：2003-10-02
申请号：PCT/US2003/007732
申请日：2003-03-12
申请人： THOMSON LICENSING S.A. , GILBERT, Philippe , LITWIN, Louis, Robert , WANG, Charles, Chuanming , RAMASWAMY, Kumar , KNUTSON, Paul, Gothard , GAO, Wen
发明人： GILBERT, Philippe , LITWIN, Louis, Robert , WANG, Charles, Chuanming , RAMASWAMY, Kumar , KNUTSON, Paul, Gothard , GAO, Wen
IPC分类号： H04B7/00
摘要： This invention relates to the field of communication systems. More particularly, this invention is a method and system for detecting the presence of a wireless local area network. With reference to Fig. 3, the WLAN front end (204) comprises an RF filter (302), a low noise amplifier (306), a mixer (310), a phase-locked loop circuit (314), a band pass filter (318), an automatic gain control circuit (322), and an in-phase and quadrature demodulator (326). In operation, an RF signal propagating in a wireless local area network frequency band is coupled to the low noise amplifier (306) from the RF filter (302).

4. 发明申请

WO2007001305A1 STOPPING CRITERIA IN ITERATIVE DECODERS 审中-公开
标题翻译：在迭代解码器中停止标准
公开(公告)号：WO2007001305A1
公开(公告)日：2007-01-04
申请号：PCT/US2005/023007
申请日：2005-06-27
申请人： THOMSON LICENSING S.A. , GAO, Wen , KOSLOV, Joshua, Lawrence
发明人： GAO, Wen , KOSLOV, Joshua, Lawrence
IPC分类号： H03M13/29
CPC分类号： H03M13/2975 , H03M13/1105 , H03M13/1128 , H03M13/2906
摘要： There are provided a method, an apparatus and a computer program product for reducing power consumption in an iterative decoder, for example, forlow-density parity-check (LDPC) codes or turbo codes. The apparatus includes a memory device and an iteration termination device. The memory device is for storing a decoded codeword for a current iteration, for each iteration of the iterative decoder prior to a maximum number of iterations. The iteration termination device is for comparing the decoded codeword for the current iteration to a previously stored decoded codeword for the previous iteration, incrementing a confidence value when the decoded codeword for the current iteration matches the previously stored decoded codeword for the previous iteration, and terminating further iterations of the iterative decoder when the confidence value exceeds a pre-specified threshold value.
摘要翻译：提供了一种用于降低迭代解码器中的功率消耗的方法，装置和计算机程序产品，例如用于低密度奇偶校验（LDPC）码或turbo码。该装置包括存储装置和迭代终止装置。存储器件用于存储用于当前迭代的解码码字，用于迭代解码器在最大迭代次数之前的每次迭代。迭代终止装置用于将用于当前迭代的解码码字与用于前一次迭代的先前存储的解码码字进行比较，当当前迭代的解码码字与先前存在的解码码字相匹配时，增加置信度值，当置信度值超过预定阈值时迭代解码器的进一步迭代。

5. 发明申请

WO2007001304A1 METHOD AND APPARATUS FOR POWER REDUCTION IN ITERATIVE DECODERS 审中-公开
标题翻译：在迭代解码器中减少功率的方法和装置
公开(公告)号：WO2007001304A1
公开(公告)日：2007-01-04
申请号：PCT/US2005/023005
申请日：2005-06-27
申请人： THOMSON LICENSING S.A. , GAO, Wen , KOSLOV, Joshua, Lawrence
发明人： GAO, Wen , KOSLOV, Joshua, Lawrence
IPC分类号： H04L1/00 , H03M13/29
CPC分类号： H03M13/1128 , H03M13/1111 , H03M13/1165 , H03M13/152 , H03M13/2906 , H03M13/2957 , H03M13/2975 , H04L1/0051 , H04L1/0057
摘要： There are provided a method, an apparatus and a computer program product for reducing power consumption in an iterative decoder. The apparatus includes a memory device and an iteration termination device. The memory device is for storing a bit number difference indicating a number of bits that are different between a decoded codeword for a current iteration and a decoded codeword for a previous iteration, for each iteration of the iterative decoder prior to a maximum number of iterations. The iteration termination device is for comparing the bit number difference to a pre-specified bit number difference threshold value, incrementing a confidence value when the bit number difference exceeds the pre-specified bit number difference threshold value, and terminating further iterations of the iterative decoder when the confidence value exceeds a pre-specified confidence threshold value.
摘要翻译：提供了一种用于在迭代解码器中降低功耗的方法，装置和计算机程序产品。该装置包括存储装置和迭代终止装置。存储装置用于存储指示在最大次数之前迭代解码器的每次迭代的用于当前迭代的解码码字和先前迭代的解码码字之间的不同比特数的比特数差。迭代终止装置用于将比特数差与预先指定的比特数差值阈值进行比较，当比特数差超过预先指定的比特数差值阈值时递增置信度，并终止迭代解码器的进一步迭代当置信度值超过预定义的置信度阈值时。

6. 发明申请

WO2005018122A1 FREQUENCY SYNCHRONIZATION DURING CELL SEARCH IN A UNIVERSAL MOBILE TELEPHONE SYSTEM RECEIVER 审中-公开
标题翻译：通用移动电话系统接收器中的小区搜索中的频率同步
公开(公告)号：WO2005018122A1
公开(公告)日：2005-02-24
申请号：PCT/US2003/024358
申请日：2003-08-04
申请人： THOMSON LICENSING S.A. , LITWIN, Louis, Robert , GAO, Wen
发明人： LITWIN, Louis, Robert , GAO, Wen
IPC分类号： H04J3/06
CPC分类号： H04J3/0605 , H04B1/70735 , H04B1/7083 , H04L2027/0026 , H04L2027/0036 , H04L2027/0073
摘要： A Universal Mobile Telephone System (UMTS) receiver performs slot synchronization using a received primary synchronization channel (PSCH) (305). Subsequent to completion of slot synchronization, the UMTS receiver performs frame synchronization using a received secondary synchronization channel (SSCH) (320) in such a way that the UMTS receiver uses the received primary synchronization channel (PSCH) to adjust for the presence of frequency offset (325, 330, 335).
摘要翻译：通用移动电话系统（UMTS）接收机使用接收到的主同步信道（PSCH）（305）来执行时隙同步。在完成时隙同步之后，UMTS接收机使用接收的辅同步信道（SSCH）（320）进行帧同步，使得UMTS接收机使用接收到的主同步信道（PSCH）来调整频偏的存在（325,330,335）。

7. 发明申请

WO2004100475A2 APPARATUS AND METHOD FOR USE IN ITERATIVE DECODING 审中-公开
标题翻译：装置和方法用于迭代解码
公开(公告)号：WO2004100475A2
公开(公告)日：2004-11-18
申请号：PCT/US2004/013733
申请日：2004-04-24
申请人： THOMSON LICENSING S.A. , KOSLOV, Joshua , RAMASWAMY, Kumar , GAO, Wen
发明人： KOSLOV, Joshua , RAMASWAMY, Kumar , GAO, Wen
IPC分类号： H04L25/06
CPC分类号： H04B7/18517 , H04L1/0016 , H04L1/005 , H04L27/366
摘要： A satellite communications system comprises a transmitting ground station, including a transmitter and a receiver, a satellite transponder and a receiving ground station. The transmitter transmits an uplink signal to the satellite transponder, which broadcasts the received uplink signal as a downlink signal to the receiving ground station. The transmitting ground station monitors the downlink signal through the receiver and calculates log-likelihood ratios (LLRs) as a function of the monitored downlink signal. These LLRs are illustratively stored in a look-up table, which are then transmitted to the receiving ground station for use in recovering data from a received data signal.
摘要翻译：一种卫星通信系统包括一个发射地面站，包括发射机和接收机，卫星转发器和接收地面站。发射机向卫星转发器发送上行链路信号，卫星转发器将接收到的上行链路信号作为下行链路信号广播到接收地面站。发射地面站通过接收机监测下行链路信号，并根据被监视的下行链路信号计算对数似然比（LLR）。这些LLR被示例性地存储在查找表中，然后将其发送到接收地面站，以用于从接收的数据信号恢复数据。

8. 发明申请

WO2003081383A2 METHOD AND APPARATUS FOR INDICATING THE PRESENCE OF A WIRELESS LOCAL AREA NETWORK BY DETECTING ENERGY FLUCTUATIONS 审中-公开
标题翻译：通过检测能量波动来指示无线局域网的存在的方法和装置
公开(公告)号：WO2003081383A2
公开(公告)日：2003-10-02
申请号：PCT/US2003/007732
申请日：2003-03-12
申请人： THOMSON LICENSING S.A. , GILBERT, Philippe , LITWIN, Louis, Robert , WANG, Charles, Chuanming , RAMASWAMY, Kumar , KNUTSON, Paul, Gothard , GAO, Wen
发明人： GILBERT, Philippe , LITWIN, Louis, Robert , WANG, Charles, Chuanming , RAMASWAMY, Kumar , KNUTSON, Paul, Gothard , GAO, Wen
IPC分类号： G06F
CPC分类号： H04W24/00 , H04W52/0216 , H04W52/0232 , H04W84/12 , Y02D70/122 , Y02D70/142 , Y02D70/164
摘要： A method and apparatus for detecting the presence of a wireless local area network (WLAN) (104) detects at least one energy fluctuation in a radio frequency (RF) signal propagating in a WLAN frequency band and indicates the presence of a WLAN (104) in response to the detection of the at least one energy fluctuation.
摘要翻译：用于检测无线局域网（WLAN）（104）的存在的方法和装置检测在WLAN频带中传播的射频（RF）信号中的至少一个能量波动，并指示WLAN（104）的存在，响应于所述至少一个能量波动的检测。

9. 发明申请

WO2006078231A1 EFFICIENT MAXIMAL RATIO COMBINER FOR CDMA SYSTEMS 审中-公开
标题翻译： CDMA系统的有效最大比例组合
公开(公告)号：WO2006078231A1
公开(公告)日：2006-07-27
申请号：PCT/US2005/000762
申请日：2005-01-14
申请人： THOMSON LICENSING S.A. , KEEL, Alton Shelborne , LITWIN, Louis, Robert , GAO, Wen
发明人： KEEL, Alton Shelborne , LITWIN, Louis, Robert , GAO, Wen
IPC分类号： H04B1/707
CPC分类号： H04B1/7115 , H04B1/712 , H04B2201/70703 , H04B2201/70707
摘要： A receiver comprises a number of fingers, each finger providing symbols associated with a path of a received multipath signal, and a maximal ratio combiner (MRC) that activates to combine the symbols when the symbols are available. In an illustrative embodiment a receiver is a CDMA receiver and comprises a number of fingers, an interface, and an MRC. Each finger provides symbols asociated with a path of a received multipath signal for the various channels conveyed therein, the interface provides an indiction when symbols from the fingers are ready for processing to the MRC, which then activates to combine those symbols from the fingers that are asociated with the same channel. Illustratively, the interface includes a priority encoder for selecting different channels for processing by the MRC. Further, the MRC can be configured to operate with a clock rate that is greater than a chip rate. By selectively activating the MRC, or at least a portion thereof, a reduction in the number of combining circuits can be achieved within the MRC.
摘要翻译：接收机包括多个手指，每个手指提供与接收到的多路径信号的路径相关联的符号，以及当符号可用时激活以组合符号的最大比率组合器（MRC）。在说明性实施例中，接收机是CDMA接收机，包括多个指状物，接口和MRC。每个手指提供与所接收的多路径信号的路径相关联的符号，用于在其中传送的各种信道的接收的多路径信号的路径，当接口的符号准备好处理到MRC时，接口提供指示，然后激活以组合来自手指的那些符号与同一频道相关。说明性地，接口包括用于选择由MRC进行处理的不同信道的优先编码器。此外，MRC可以被配置为以大于芯片速率的时钟速率进行操作。通过选择性地激活MRC或其至少一部分，可以在MRC内实现组合电路的数量的减少。

10. 发明申请

WO2005018111A1 FRAME SYNCHRONIZATION IN A UNIVERSAL MOBILE TELEPHONE SYSTEM RECEIVER 审中-公开
标题翻译：通用移动电话系统接收机中的帧同步
公开(公告)号：WO2005018111A1
公开(公告)日：2005-02-24
申请号：PCT/US2003/024351
申请日：2003-08-04
申请人： THOMSON LICENSING S.A. , LITWIN, Louis, Robert , GAO, Wen
发明人： GAO, Wen
IPC分类号： H04B7/212
CPC分类号： H04B1/7083 , H04B1/70735 , H04J3/0605 , H04J3/0608 , H04W56/0015 , H04W74/04 , H04W84/04 , H04W92/10
摘要： A Universal Mobile Telephone System (UMTS) receiver performs slot synchronization using a received primary synchronization channel (PSCH) (305). Subsequent to completion of slot synchronization, the UMTS receiver performs frame synchronization using a received secondary synchronization channel (SSCH) (320) in such a way that the UMTS receiver uses the received primary synchronization channel (PSCH) to detect a change in channel conditions (325, 330, 335, 350, 355, 360).
摘要翻译：通用移动电话系统（UMTS）接收机使用接收到的主同步信道（PSCH）（305）来执行时隙同步。在完成时隙同步之后，UMTS接收机使用接收到的辅同步信道（SSCH）（320）进行帧同步，使得UMTS接收机使用所接收的主同步信道（PSCH）来检测信道状况的变化（ 325,330,335,350,355,360）。

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