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. 发明授权

US5737327A Method and apparatus for demodulation and power control bit detection in a spread spectrum communication system 失效
标题翻译：扩频通信系统中解调和功率控制位检测的方法和装置
公开(公告)号：US5737327A
公开(公告)日：1998-04-07
申请号：US624329
申请日：1996-03-29
申请人： Fuyun Ling , David E. Borth , Colin D. Frank , Phillip D. Rasky , James F. Kepler
发明人： Fuyun Ling , David E. Borth , Colin D. Frank , Phillip D. Rasky , James F. Kepler
IPC分类号： H04B1/707 , H04B7/005 , H04B7/26 , H04J11/00 , H04J13/00 , H04L25/02 , H04J13/04 , H04Q7/20
CPC分类号： H04W52/60 , H04B1/707 , H04J13/00 , H04L25/0214 , H04W52/42 , H04L25/0226
摘要： A receiver circuit (400, 500) receives a spread spectrum communication signal, such as a DS-CDMA signal, including a pilot channel and including a power control designator. The signal is despread and decoded. The pilot symbols on the pilot channel are provided to a channel estimator (408) for estimating the channel phase and channel gain of the communication channel. This estimate is provided to a demodulator (422) for demodulating the traffic channel symbols. The pilot symbols are provided to another channel estimator (410) for estimating channel phase and channel gain for the power control designator. This estimate is provided to a demodulator (424) for demodulating the power control designator. The traffic channel symbols are delayed a predetermined time in a delay element (420) before demodulating. The power control designator is delayed a short time or not at all in a short delay element (418) before demodulation.
摘要翻译：接收机电路（400,500）接收包括导频信道并包括功率控制指示符的扩频通信信号，例如DS-CDMA信号。信号被解扩和解码。导频信道上的导频符号被提供给用于估计通信信道的信道相位和信道增益的信道估计器（408）。该估计被提供给用于解调业务信道符号的解调器（422）。导频符号被提供给用于估计功率控制指示符的信道相位和信道增益的另一信道估计器（410）。该估计被提供给用于解调功率控制指示符的解调器（424）。业务信道符号在解调之前延迟延迟元件（420）中的预定时间。在解调之前，功率控制指示符在短时间内延迟短暂的延迟元件（418）。

2. 发明授权

US5142551A Signal weighting system for digital receiver 失效
标题翻译：用于数字接收机的信号称重系统
公开(公告)号：US5142551A
公开(公告)日：1992-08-25
申请号：US662049
申请日：1991-02-28
申请人： David E. Borth , Phillip D. Rasky , Fuyun Ling , M. Vedat Eyuboglu
发明人： David E. Borth , Phillip D. Rasky , Fuyun Ling , M. Vedat Eyuboglu
IPC分类号： H03H15/00 , H03H17/00 , H03H21/00 , H03M13/00 , H03M13/23 , H04B1/10 , H04B1/12 , H04B3/14 , H04B7/005
CPC分类号： H03M13/00 , H04B7/005
摘要： A signal weighting system for associating a confidence level with portions of a communication signal transmitted upon a multipath channel and received by a receiver. A signal received by the receiver is equalized by an equalizer circuit, such as a maximum likelihood sequence estimator, and the equalized signal generated thereby is supplied to an adaptive filter which is synthesizes portions of the multipath channel. The signal received by the receiver is altered responsive to values of a filtered, equalized signal generated by the adaptive filter.
摘要翻译：一种信号加权系统，用于将置信水平与在多路径信道上发送并由接收机接收的通信信号的部分相关联。由接收机接收到的信号由诸如最大似然序列估计器的均衡器电路均衡，并且由此生成的均衡信号被提供给合成多径信道的部分的自适应滤波器。响应于由自适应滤波器产生的经滤波的均衡信号的值，接收机接收到的信号被改变。

3. 发明授权

US5878075A Method of and apparatus for generating a pseudorandom noise sequence 失效
标题翻译：用于产生伪随机噪声序列的方法和装置
公开(公告)号：US5878075A
公开(公告)日：1999-03-02
申请号：US687815
申请日：1996-07-26
申请人： Colin D. Frank , Fuyun Ling
发明人： Colin D. Frank , Fuyun Ling
IPC分类号： H03K3/84 , G06F7/58 , H04L9/22 , H04B15/00 , H04K1/00
CPC分类号： G06F7/584 , H04L9/0662 , G06F2207/583 , H04L2209/04 , H04L2209/12 , H04L2209/805
摘要： An augmenting circuit (153) augments an embedded PN sequence of 2.sup.N -1 chips generated by an N-bit LSSR (111) to provide an augmented PN sequence of 2.sup.N chips and an augmented PN sequence of 2.sup.N chips shifted by D chips. The augmenting circuit comprises a N-bit counter (123) that counts a plurality of clock bits. The N-bit counter provides a pre-carry signal that changes state when the counter's index equals a predetermined value and provides a value of the N-k most-significant-bits (MSB) of the index. A logic circuit (107,119) receives the plurality of clock bits and responds to the pre-carry signal to gate the plurality of clock bits. A comparator (135) receives the value of the N-k MSB and a threshold value to output a select signal that controls a multiplexer (139).
摘要翻译：增强电路（153）增加由N位LSSR（111）产生的2N-1码片的嵌入PN序列，以提供2N码片的扩充PN序列和由D码片移位的2N个码片的增强PN序列。扩充电路包括对多个时钟位进行计数的N位计数器（123）。 N位计数器提供一个预进位信号，当计数器的索引等于预定值并且提供索引的N-k个最高有效位（MSB）的值时，改变状态。逻辑电路（107,119）接收多个时钟位并且响应于预进位信号以对多个时钟位进行门控。比较器（135）接收N-k个MSB的值和阈值，以输出控制多路复用器（139）的选择信号。

4. 发明授权

US09554319B2 Channel handoff methods in wireless broadcast systems 有权
标题翻译：无线广播系统中的信道切换方法
公开(公告)号：US09554319B2
公开(公告)日：2017-01-24
申请号：US11828333
申请日：2007-07-25
申请人： Linbo Li , Ashok Mantravadi , Fuyun Ling , Raghuraman Krishnamoorthi
发明人： Linbo Li , Ashok Mantravadi , Fuyun Ling , Raghuraman Krishnamoorthi
IPC分类号： H04Q7/20 , H04W36/28 , H04W36/30 , H04W72/08
CPC分类号： H04W36/28 , H04W36/30 , H04W72/085
摘要： Systems and methodologies are described that facilitate monitoring RF channels in a wireless communication environment to determine whether one or more channels comprise a forward-link-only (FLO) signal. A receiver can receive a first RF channel with a FLO signal and can monitor other RF channels for FLO signals. Upon a determination that a monitored RF channel comprises a FLO signal, the receiver can switch between the first RF channel and the monitored RF channel, employing information on current MLC decoding status, to facilitate providing seamless reception of the FLO signal, which can be superframe synchronized between RF channels. FLO signal detection can be performed using one or more of a wide-area identification channel energy detection protocol and a wide-area overhead information symbol decoding error detection protocol.
摘要翻译：描述了便于在无线通信环境中监视RF信道以确定一个或多个信道是包括仅前向链路（FLO）信号的系统和方法。接收机可以接收具有FLO信号的第一RF信道，并且可以监视FLO信号的其他RF信道。在确定被监视的RF信道包括FLO信号之后，接收机可以使用关于当前MLC解码状态的信息在第一RF信道和被监控的RF信道之间切换，以便于提供FLO信号的无缝接收，其可以是超帧在RF信道之间同步。可以使用广域识别信道能量检测协议和广域开销信息符号解码错误检测协议中的一个或多个来执行FLO信号检测。

5. 发明申请

US20150326382A1 INITIALIZATION OF TIMING RECOVERY AND DECISION-FEEDBACK EQUALIZATION IN A RECEIVER 审中-公开
标题翻译：定时恢复的初始化和接收方的决策反馈均衡
公开(公告)号：US20150326382A1
公开(公告)日：2015-11-12
申请号：US14763798
申请日：2013-01-28
申请人： Jian LI , Yisheng XUE , Michael M. FAN , Jilei HOU , Yin Huang , Fuyun Ling , QUALCOMM INCORPORATED
发明人： Jian Li , Yin Huang , Yisheng Xue , Michael M. Fan , Fuyun Ling , Jilei Hou
IPC分类号： H04L7/00 , H04L25/03
CPC分类号： H04L7/0004 , H04L25/03 , H04L25/0305 , H04L25/0307 , H04L2025/03656
摘要： A method of initializing a receiver is performed during an initialization mode. Timing offset values for a timing recovery circuit are repeatedly selected. For each selected timing offset value, timing recovery is performed using the timing offset value and groups of weights for a decision feedback equalizer are repeatedly selected. Each selected group of weights is used to perform blind decision feedback equalization. For each selected group of weights, a metric indicating data reception quality is computed. A timing offset value and a group of weights are chosen based on the computed metrics.
摘要翻译：在初始化模式期间执行初始化接收机的方法。定时恢复电路的定时偏移值被重复选择。对于每个选择的定时偏移值，使用定时偏移值执行定时恢复，并且重复地选择用于判决反馈均衡器的权重组。每个选择的权重组用于执行盲判决反馈均衡。对于每个选择的权重组，计算指示数据接收质量的度量。基于所计算的度量来选择定时偏移值和权重组。

6. 发明授权

US08744018B2 Early termination schemes for turbo decoding in a wireless communication system 失效
标题翻译：用于无线通信系统中turbo解码的提前终止方案
公开(公告)号：US08744018B2
公开(公告)日：2014-06-03
申请号：US13440287
申请日：2012-04-05
申请人： Jinghu Chen , Wanlun Zhao , Mingxi Fan , Fuyun Ling , Peter John Black
发明人： Jinghu Chen , Wanlun Zhao , Mingxi Fan , Fuyun Ling , Peter John Black
IPC分类号： H04L27/06
CPC分类号： H03M13/2975 , H04L1/0051
摘要： Certain embodiments provide methods that may allow for improvements in performance and power consumption by terminating the turbo decoding process early when one of at least two test criterion is satisfied in communications systems, including UMTS, WCDMA, and TD-DCMA.
摘要翻译：某些实施例提供了通过在包括UMTS，WCDMA和TD-DCMA的通信系统中满足至少两个测试标准中的一个的情况下提前终止turbo解码过程来允许改进性能和功耗的方法。

7. 发明授权

US08640012B2 Communication signal decoding with iterative cooperation between inner and outer codes 有权
标题翻译：通信信号解码与内部和外部代码之间的迭代协作
公开(公告)号：US08640012B2
公开(公告)日：2014-01-28
申请号：US12430719
申请日：2009-04-27
申请人： Fuyun Ling , Thomas Sun , Tao Tian , Raghuraman Krishnamoorthi , Jing Jiang
发明人： Fuyun Ling , Thomas Sun , Tao Tian , Raghuraman Krishnamoorthi , Jing Jiang
IPC分类号： G06F11/00
CPC分类号： H03M13/112 , H03M13/1111 , H03M13/1117 , H03M13/1191 , H03M13/1515 , H03M13/152 , H03M13/19 , H03M13/23 , H03M13/2966 , H03M13/658 , H04L1/005 , H04L1/0064
摘要： Received communication signals may be decoded according to a combined, iterative inner code—outer code decoding technique. The inner code decoding is based on information produced by the outer code decoding.
摘要翻译：接收到的通信信号可以根据组合的迭代内码外码解码技术进行解码。内码解码是基于由外码解码产生的信息。

8. 发明授权

US08635645B2 Apparatus and methods of providing and receiving venue level transmissions and services 有权
标题翻译：提供和接收场地级传输和服务的装置和方法
公开(公告)号：US08635645B2
公开(公告)日：2014-01-21
申请号：US12569792
申请日：2009-09-29
申请人： Raghuraman Krishnamoorthi , Pankaj V. Rahate , Pankaj Jain , Devarshi P. Shah , Pavel A. Seliverstov , George A. Rothrock , Nilabh Khare , Anil K. Wadhwani , Jiming Guo , Sanjiv Nanda , Fuyun Ling , Murali R. Chari , Avneesh Agrawal , Rinat Burdo , Prasanna Kannan , Krishna K. Mukkavilli , Reynaldo W. Newman , Michael M. Fan , Manoj M. Deshpande , Ranjith S. Jayaram
发明人： Raghuraman Krishnamoorthi , Pankaj V. Rahate , Pankaj Jain , Devarshi P. Shah , Pavel A. Seliverstov , George A. Rothrock , Nilabh Khare , Anil K. Wadhwani , Jiming Guo , Sanjiv Nanda , Fuyun Ling , Murali R. Chari , Avneesh Agrawal , Rinat Burdo , Prasanna Kannan , Krishna K. Mukkavilli , Reynaldo W. Newman , Michael M. Fan , Manoj M. Deshpande , Ranjith S. Jayaram
IPC分类号： H04N5/445
CPC分类号： H04N21/2385 , H04L12/189 , H04L67/16 , H04L67/18 , H04N21/482 , H04W4/02 , H04W4/04 , H04W48/16 , H04W72/005
摘要： A venue-cast system and method for providing and receiving venue level transmissions and services, including discovery of a venue specific transmission by receiving an overhead signal from a non-venue network, extracting information for receiving the venue specific transmission from the overhead signal, and tuning to receive the venue specific transmission based on the extracted information. The venue level transmission may be provided and received in a manner that does not prevent an access terminal from receiving a local area or wide area transmission.
摘要翻译：一种用于提供和接收场地级传输和服务的场地播放系统和方法，包括通过从非场地网络接收开销信号来发现场地特定传输，从开销信号中提取用于接收场地特定传输的信息，以及基于所提取的信息进行调谐以接收特定于场地的传输。可以以不阻止接入终端接收局域或广域传输的方式提供和接收场地级传输。

9. 发明申请

US20130156124A1 SYSTEM AND METHOD FOR FREQUENCY DIVERSITY 有权
标题翻译：频域多样性的系统与方法
公开(公告)号：US20130156124A1
公开(公告)日：2013-06-20
申请号：US13767834
申请日：2013-02-14
申请人： Michael Mao Wang , Murali Ramaswamy Chari , Ashok Mantravadi , Fuyun Ling , Rajiv Vijayan , Raghuraman Krishnamoorthi
发明人： Michael Mao Wang , Murali Ramaswamy Chari , Ashok Mantravadi , Fuyun Ling , Rajiv Vijayan , Raghuraman Krishnamoorthi
IPC分类号： H04L27/26
CPC分类号： H04L27/2601 , H03M13/258 , H03M13/271 , H03M13/2957 , H03M13/31 , H04L1/0071 , H04L1/04 , H04L5/0007 , H04L5/0042 , H04L5/0044 , H04L5/0064 , H04L5/0083 , H04L27/2626 , H04L27/2634
摘要： A system and method for frequency diversity uses interleaving in a wireless communication system utilizing orthogonal frequency division multiplexing (OFDM) with various FFT sizes. Subcarriers of one or more interlaces are interleaved in a bit reversal fashion and the one or more interlaces are interleaved in the bit reversal fashion.
摘要翻译：用于频率分集的系统和方法使用利用具有各种FFT大小的正交频分复用（OFDM）的无线通信系统中的交织。一个或多个交错的子载波以位反向方式进行交织，并且该一个或多个交织以比特反转方式进行交织。

10. 发明授权

US08441913B2 Switching diversity in broadcast OFDM systems based on multiple receive antennas 有权
标题翻译：基于多个接收天线的广播OFDM系统中的交换分集
公开(公告)号：US08441913B2
公开(公告)日：2013-05-14
申请号：US11521701
申请日：2006-09-15
申请人： Linbo Li , Ashok Mantravadi , Fuyun Ling
发明人： Linbo Li , Ashok Mantravadi , Fuyun Ling
IPC分类号： H04J11/00
CPC分类号： H04B7/0404 , H04B7/0805 , H04B7/0808 , H04B7/0811 , H04B7/0814 , H04B7/0857 , H04B7/0874 , H04L1/0003 , H04L1/0057 , H04L1/0066 , H04L25/022 , H04L27/2647 , H04W72/085
摘要： Systems and methods are provided for enhancing signal quality at receivers in a wireless network. In one embodiment, an antenna is selected from a subset of antennas based on a signal quality parameter such as received signal power or signal-to-noise ratio (SNR). In another embodiment, multiple antennas are applied to independent signal processing paths for the respective antennas where output from the paths is then combined to enhance overall signal quality at the receiver.
摘要翻译：提供了用于在无线网络中的接收机处提高信号质量的系统和方法。在一个实施例中，基于诸如接收信号功率或信噪比（SNR）的信号质量参数从天线子集中选择天线。在另一个实施例中，多个天线被施加到各个天线的独立信号处理路径，其中来自路径的输出然后被组合以增强接收机处的整体信号质量。

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