专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

WO2005020530A1 METHODS AND APPARATUS FOR HIERARCHICAL MODULATION USING RADIAL CONSTELLATION 审中-公开
标题翻译：使用径向协调的分层调制的方法和装置
公开(公告)号：WO2005020530A1
公开(公告)日：2005-03-03
申请号：PCT/US2004/022780
申请日：2004-07-15
申请人： THOMSON LICENSING S.A. , GAO, Wen , KOSLOV, Joshua, Lawrence , RAMASWAMY, Kumar
发明人： GAO, Wen , KOSLOV, Joshua, Lawrence , RAMASWAMY, Kumar
IPC分类号： H04L27/34
CPC分类号： H04L27/3488
摘要： There is provided a method for hierarchical modulation relating to a first signal, a second signal, and an original constellation having a plurality of symbols in a non-uniform 8 Phase-Shift-Keying (PSK) configuration. Quadrature-Phase-Shift-Keying (QPSK) modulation is used for the first signal and Binary-Phase-Shift-Keying (BPSK) modulation is used for the second signal. The method includes the step of replacing at least some of the plurality of symbols with at least one radial-type QPSK-BPSK constellation.
摘要翻译：提供了一种用于与第一信号，第二信号和具有非均匀8相移键控（PSK）配置中的多个符号的原始星座相关的分级调制的方法。正交相移键控（QPSK）调制用于第一信号，二进制相移键控（BPSK）调制用于第二信号。该方法包括用至少一个径向型QPSK-BPSK星座代替多个符号中的至少一些符号的步骤。

2. 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。

3. 发明申请

WO2004100478A3 APPARATUS AND METHOD FOR DECODING IN A HIERARCHICAL MODULATION SYSTEM 审中-公开
公开(公告)号：WO2004100478A3
公开(公告)日：2004-11-18
申请号：PCT/US2004/013735
申请日：2004-04-24
申请人： THOMSON LICENSING S.A. , KOSLOV, Joshua , GAO, Wen
发明人： KOSLOV, Joshua , GAO, Wen
IPC分类号： H04L27/34
摘要： A satellite receiver receives a hierarchical modulation based signal, which has at least an upper layer (UL) and a lower layer (LL), and simultaneously or independently recovers therefrom data conveyed in the UL signal and data conveyed in the LL signal.

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

WO2007133270A1 METHOD AND APPARATUS FOR TRANSMITTING DATA 审中-公开
标题翻译：用于发送数据的方法和装置
公开(公告)号：WO2007133270A1
公开(公告)日：2007-11-22
申请号：PCT/US2006/048320
申请日：2006-12-19
申请人： THOMSON LICENSING , KNUTSON, Paul, Gothard , RAMASWAMY, Kumar , KOSLOV, Joshua, Lawrence , VISWAMBHARAN, Manoj , ZHANG, Benyuan , GAO, Wen , WU, Yik, Chung
发明人： KNUTSON, Paul, Gothard , RAMASWAMY, Kumar , KOSLOV, Joshua, Lawrence , VISWAMBHARAN, Manoj , ZHANG, Benyuan , GAO, Wen , WU, Yik, Chung
IPC分类号： H04N7/24
CPC分类号： H04N5/60 , H04L65/607 , H04N5/04 , H04N19/40 , H04N19/61 , H04N21/234309 , H04N21/2365 , H04N21/23805 , H04N21/2381 , H04N21/26275 , H04N21/2662 , H04N21/41407 , H04N21/4347 , H04N21/4363 , H04N21/4381 , H04N21/4436 , H04N21/6112
摘要： An implementation provides a transmitter that separates sequential portions of data in a first set of data by time intervals allowing a power saving mode (1005). The transmitter transmits the sequential portions of data separated by respective time intervals having lengths configured to allow a receiver to enter and exit a power saving mode between receiving sequentially transmitted portions of data from the first set of data (1010). The transmitter separates sequential portions of data in a second set by time intervals that are not of sufficient length to allow a receiver to enter and exit a power saving mode during the time intervals (1015). The second set of data is then transmitted (1020).
摘要翻译：实现提供了一种发射机，其通过允许省电模式（1005）的时间间隔来分离第一组数据中的数据的顺序部分。发射机发送由具有被配置为允许接收机在从第一组数据（1010）接收顺序发送的数据部分之间进入和退出功率节省模式的具有长度的相应时间间隔分开的数据的顺序部分。发射机通过不足够长度的时间间隔分离第二组中的数据的顺序部分，以允许接收机在时间间隔（1015）期间进入和退出省电模式。然后传送第二组数据（1020）。

7. 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.

8. 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).

9. 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。

10. 发明申请

WO2003081828A3 METHOD AND APPARATUS FOR DETECTING THE PRESENCE OF A WIRELESS LOCAL AREA NETWORK USING A POSITION LOCATION SYSTEM 审中-公开
公开(公告)号：WO2003081828A3
公开(公告)日：2003-10-02
申请号：PCT/US2003/006765
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) determines a position of a mobile device (110) using a position location system (114), receives a position of a WLAN (104) from a location database(112), and determines whether the mobile device (110) is within a service area (108) of the WLAN (104) in response to the position of the mobile device (110) and the position of the WLAN (104).

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式