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1. 发明申请

US20070258532A1 Parallel bit interleaver for a wireless system 有权
标题翻译：用于无线系统的并行位交织器
公开(公告)号：US20070258532A1
公开(公告)日：2007-11-08
申请号：US11416853
申请日：2006-05-02
申请人： Jinxia Bai , Thomas Sun
发明人： Jinxia Bai , Thomas Sun
IPC分类号： H04L27/36 , H04L5/12 , H04L23/02
CPC分类号： H04L1/0071 , H04L1/0018 , H04L1/0066 , H04L2001/0093
摘要： Systems and methods are provided to process wireless data packets. A method includes determining a subset of data bits to be processed at a wireless transmitter and employing a clock edge to store the data. The clock edge allows parallel mapping of at least two bits from the subset of data bits into an interleaver memory per a given clock edge. From the memory, other encoding and scrambling processes are applied before transmitting the data packets across a wireless network.
摘要翻译：提供系统和方法来处理无线数据分组。一种方法包括确定要在无线发射机处理的数据比特的子集，并采用时钟边缘来存储数据。时钟沿允许从每个给定时钟沿到数据比特子集的至少两个比特到交织器存储器的并行映射。从存储器中，在通过无线网络发送数据分组之前应用其他编码和加扰处理。

2. 发明申请

US20080040413A1 IFFT PROCESSING IN WIRELESS COMMUNICATIONS 有权
标题翻译：无线通信中的IFFT处理
公开(公告)号：US20080040413A1
公开(公告)日：2008-02-14
申请号：US11612456
申请日：2006-12-18
申请人： Jai N. Subrahmanyam , Chinnappa K. Ganapathy , Durk L. van Veen , Jinxia Bai , Kevin S. Cousineau , Seokyong Oh
发明人： Jai N. Subrahmanyam , Chinnappa K. Ganapathy , Durk L. van Veen , Jinxia Bai , Kevin S. Cousineau , Seokyong Oh
IPC分类号： G06F15/00
CPC分类号： H04L27/2626
摘要： Techniques for performing IFFT pipelining are described. In some aspects, the pipelining is achieved with a processing system having a memory having first and second sections, an encoder configured to process data in each of the first and second memory sections, an IFFT configured to process the encoded data in the first and second memory sections, and a post-processor configured to process the IFFT processed data in the first memory section while the IFFT is processing the encoded data in the second memory section, the post processor configured to operate at a different clock speed than the encoder or the IFFT.
摘要翻译：描述了用于执行IFFT流水线的技术。在一些方面，流水线通过具有具有第一和第二部分的存储器的处理系统来实现，编码器被配置为处理第一和第二存储器部分中的每一个中的数据;被配置为处理第一和第二部分中的编码数据的IFFT 存储器部分和后处理器，其被配置为在IFFT处理第二存储器部分中的编码数据时处理第一存储器部分中的IFFT处理的数据，后处理器被配置为以与编码器不同的时钟速度操作 IFFT。

3. 发明申请

US20060178755A1 Bit log likelihood ratio evaluation 失效
标题翻译：位对数似然比评估
公开(公告)号：US20060178755A1
公开(公告)日：2006-08-10
申请号：US11330652
申请日：2006-01-11
申请人： Fuyun Ling , Seong Chung , Jinxia Bai , Thomas Sun
发明人： Fuyun Ling , Seong Chung , Jinxia Bai , Thomas Sun
IPC分类号： G05B15/00
CPC分类号： H04L27/3488 , H04L1/0045 , H04L1/0065 , H04L1/0066 , H04L27/2604 , H04L2001/0098
摘要： A system and method are provided for generating bit log likelihood ratio (LLR) values for two-layered Quadrature Phase-Shift Keying (QPSK) turbo decoding in a wireless communications user terminal (UT). The method includes receiving a two-layered QPSK signal with an energy ratio that is unknown, but typically defined as either k12 or k22. The method selects a mismatched energy ratio (k2) between k12 and k22, and generating bit LLR values for two-layered QPSK turbo decoding, using the mismatched k2 energy ratio. For example, if the received two-layered QPSK signal is known to have an energy ratio of about 4 or about 6.25. Then, k2 is selected to be about 5.0625. Alternately stated, the mismatched k2 energy ratio in selected by determining the approximate midpoint between k12 and k22.
摘要翻译：提供了一种用于在无线通信用户终端（UT）中生成用于双层正交相移键控（QPSK）turbo解码的比特对数似然比（LLR）值的系统和方法。该方法包括以未知的能量比接收两层QPSK信号，但通常被定义为k1≤2或k2≥2。该方法选择k1 <2> 2和k2 <2>之间的不匹配能量比（k <2> 2），并为双层QPSK涡轮增益产生位LLR值使用不匹配的k <2>能量比进行解码。例如，如果已知所接收的两层QPSK信号具有约4或约6.25的能量比。然后，选择k <2>为约5.0625。或者说，通过确定k1 <2> 2和k2 <2>之间的近似中点，所选择的不匹配的k 2 2能量比。

4. 发明授权

US08213548B2 Methods and apparatus for dynamic packet reordering 有权
标题翻译：动态数据包重新排序的方法和装置
公开(公告)号：US08213548B2
公开(公告)日：2012-07-03
申请号：US11398205
申请日：2006-04-04
申请人： Jinxia Bai , Chinnappa K. Ganapathy , Thomas Sun
发明人： Jinxia Bai , Chinnappa K. Ganapathy , Thomas Sun
IPC分类号： H04L27/28 , H04L27/00 , H04L27/06 , H04K1/10
CPC分类号： H04L27/2647 , H04L1/0045 , H04L1/0066 , H04L1/007 , H04L25/067
摘要： Methods and apparatus for dynamic packet reordering. In an aspect, a method is provided for processing slot data on-the-fly to produce decodable packets, wherein the slot data includes interleaved modulation symbols. The method includes de-interleaving a stream of the interleaved modulation symbols to produce a stream of modulation symbols, calculating parallel streams of LLR metrics based on the stream of modulation symbols, and mapping the parallel streams of LLR metrics to produce a stream of decodable packets. In another aspect, an apparatus is provided the includes de-interleaving logic to de-interleave a stream of interleaved modulation symbols to produce a stream of modulation symbols, metric processing logic configured to produce parallel streams of LLR metrics based on the stream of modulation symbols, and mapping logic configured to map the parallel streams of LLR metrics to produce a stream of decodable packets.
摘要翻译：动态数据包重新排序的方法和装置。在一方面，提供了一种用于在运行中处理时隙数据以产生可解码分组的方法，其中时隙数据包括交织的调制符号。该方法包括对交织的调制符号的流进行解交织以产生调制符号流，基于调制符号流计算LLR度量的并行流，以及映射LLR度量的并行流以产生可解码分组流。在另一方面，提供了一种装置，其包括解交织逻辑以对交织的调制符号流进行解交织以产生调制符号流，度量处理逻辑被配置为基于调制符号流产生并行的LLR度量流以及配置成映射LLR度量的并行流的映射逻辑以产生可解码分组流。

5. 发明授权

US08102949B2 Bit log likelihood ratio evaluation 有权
标题翻译：位对数似然比评估
公开(公告)号：US08102949B2
公开(公告)日：2012-01-24
申请号：US12646543
申请日：2009-12-23
申请人： Fuyun Ling , Seong Taek Chung , Jinxia Bai , Thomas Sun
发明人： Fuyun Ling , Seong Taek Chung , Jinxia Bai , Thomas Sun
IPC分类号： H03D3/22
CPC分类号： H04L27/3488 , H04L1/0045 , H04L1/0065 , H04L1/0066 , H04L27/2604 , H04L2001/0098
摘要： A system and method are provided for generating bit log likelihood ratio (LLR) values for two-layered Quadrature Phase-Shift Keying (QPSK) turbo decoding in a wireless communications user terminal (UT). The method includes receiving a two-layered QPSK signal with an energy ratio that is unknown, but typically defined as either k12 or k22. The method selects a mismatched energy ratio (k2) between k12 and k22, and generating bit LLR values for two-layered QPSK turbo decoding, using the mismatched k2 energy ratio. For example, if the received two-layered QPSK signal is known to have an energy ratio of about 4 or about 6.25. Then, k2 is selected to be about 5.0625. Alternately stated, the mismatched k2 energy ratio in selected by determining the approximate midpoint between k12 and k22.
摘要翻译：提供了一种用于在无线通信用户终端（UT）中生成用于双层正交相移键控（QPSK）turbo解码的比特对数似然比（LLR）值的系统和方法。该方法包括以未知的能量比接收两层QPSK信号，但通常定义为k12或k22。该方法选择k12和k22之间的不匹配能量比（k2），并使用不匹配的k2能量比生成双层QPSK turbo解码的比特LLR值。例如，如果已知所接收的两层QPSK信号具有约4或约6.25的能量比。然后，选择k2为约5.0625。或者说，通过确定k12和k22之间的近似中点，选择的不匹配的k2能量比。

6. 发明申请

US20110032015A1 SYSTEMS AND METHODS FOR CLOCK CORRECTION 审中-公开
标题翻译：用于时钟校正的系统和方法
公开(公告)号：US20110032015A1
公开(公告)日：2011-02-10
申请号：US12793546
申请日：2010-06-03
申请人： Jinxia Bai , Linbo Li
发明人： Jinxia Bai , Linbo Li
IPC分类号： H03L7/00
CPC分类号： H04L7/0008 , G06F1/12 , H04L7/0025
摘要： A method, apparatus and system for correcting different clock domains are disclosed. The disclosed implementations correct a second clock domain by making reference to a resampling filter, or similar device, used to correct a first clock domain. The implementations thereby facilitate clock correction using fewer or a different variety of elements.
摘要翻译：公开了一种用于校正不同时钟域的方法，装置和系统。所公开的实现通过参考用于校正第一时钟域的重采样滤波器或类似装置来校正第二时钟域。因此，这些实施方式使用较少或不同种类的元件便于时钟校正。

7. 发明申请

US20100098192A1 BIT LOG LIKELIHOOD RATION EVALUATION 有权
标题翻译：比特日志LIKELIHOOD评估
公开(公告)号：US20100098192A1
公开(公告)日：2010-04-22
申请号：US12646543
申请日：2009-12-23
申请人： Fuyun Ling , Seong Taek Chung , Jinxia Bai , Thomas Sun
发明人： Fuyun Ling , Seong Taek Chung , Jinxia Bai , Thomas Sun
IPC分类号： H03D3/22 , H04J11/00
CPC分类号： H04L27/3488 , H04L1/0045 , H04L1/0065 , H04L1/0066 , H04L27/2604 , H04L2001/0098
摘要： A system and method are provided for generating bit log likelihood ratio (LLR) values for two-layered Quadrature Phase-Shift Keying (QPSK) turbo decoding in a wireless communications user terminal (UT). The method includes receiving a two-layered QPSK signal with an energy ratio that is unknown, but typically defined as either k12 or k22. The method selects a mismatched energy ratio (k2) between k12 and k22, and generating bit LLR values for two-layered QPSK turbo decoding, using the mismatched k2 energy ratio. For example, if the received two-layered QPSK signal is known to have an energy ratio of about 4 or about 6.25. Then, k2 is selected to be about 5.0625. Alternately stated, the mismatched k2 energy ratio in selected by determining the approximate midpoint between k12 and k22.
摘要翻译：提供了一种用于在无线通信用户终端（UT）中生成用于双层正交相移键控（QPSK）turbo解码的比特对数似然比（LLR）值的系统和方法。该方法包括以未知的能量比接收两层QPSK信号，但通常定义为k12或k22。该方法选择k12和k22之间的不匹配能量比（k2），并使用不匹配的k2能量比生成双层QPSK turbo解码的比特LLR值。例如，如果已知所接收的两层QPSK信号具有约4或约6.25的能量比。然后，选择k2为约5.0625。或者说，通过确定k12和k22之间的近似中点，选择的不匹配的k2能量比。

8. 发明授权

US07529531B2 Apparatus and methods for estimating a sleep clock frequency 失效
标题翻译：用于估计睡眠时钟频率的装置和方法
公开(公告)号：US07529531B2
公开(公告)日：2009-05-05
申请号：US11271445
申请日：2005-11-09
申请人： Michael Mao Wang , Chinnappa K. Ganapathy , Jinxia Bai
发明人： Michael Mao Wang , Chinnappa K. Ganapathy , Jinxia Bai
IPC分类号： H04B14/02
CPC分类号： H04W52/029 , Y02D70/166
摘要： Apparatus and methods for estimating the frequency of a sleep or slow clock using a fast clock, such as a temperature compensated crystal oscillator. The disclosed apparatus include an estimator having a first counter that receives sleep clock synchronized pulses issuing each cycle of the sleep clock period, yet are synchronized to a fast clock. The slow clock synchronized pulses are counted up to a predetermined number; whereupon a full count signal is issued. A second counter receives the full count signal and increments each time the full count signal is received. A third counter counts fast clock cycles until the full count signal occurs. Based on the number of counts of the slow and fast clock cycles, the frequency of the slow clock may be determined using only the domain of the fast clock for performing the measurement thereby tying accuracy of the measurement to the accuracy of the fast clock. The disclosed apparatus also include an integrated circuit and a transceiver employing the disclosed estimator. Corresponding methods are also disclosed.
摘要翻译：使用诸如温度补偿晶体振荡器的快速时钟来估计睡眠或慢时钟频率的装置和方法。所公开的装置包括具有第一计数器的估计器，该第一计数器接收发出睡眠时钟周期的每个周期的休眠时钟同步脉冲，但是与快速时钟同步。慢时钟同步脉冲被计数到预定数量; 然后发出完整计数信号。第二计数器接收完全计数信号，并且每当接收到全计数信号时递增。第三个计数器计数快速时钟周期，直到发生完全计数信号。基于慢速和快速时钟周期的计数次数，可以仅使用用于执行测量的快速时钟的域来确定慢时钟的频率，从而将测量的精度与快速时钟的精度相结合。所公开的装置还包括采用所公开的估计器的集成电路和收发器。还公开了相应的方法。

9. 发明申请

US20070230627A1 Forward error correction in a distribution system 失效
标题翻译：配电系统中的前向纠错
公开(公告)号：US20070230627A1
公开(公告)日：2007-10-04
申请号：US11398204
申请日：2006-04-04
申请人： Durk van Veen , Jai Subrahmanyam , Jinxia Bai , Murali Chari
发明人： Durk van Veen , Jai Subrahmanyam , Jinxia Bai , Murali Chari
IPC分类号： H04L27/06
CPC分类号： H04L1/0061 , H04L1/0082 , H04L2001/0097
摘要： A multimedia distribution system is disclosed. The distribution system includes a transmitter unit that distributes content from a content provider to one or more wireless subscriber units. The transmitter unit includes a decoder configured to determine whether a plurality of incoming packets include one or more erasures, a transmitter configured to transmit the packets to a receiving unit, and an error detection code generator configured to generate an error detection code for each of the packets transmitted to the receiver unit, the error detection code being modified for each of the erased packets so that the receiver unit will be able to identify the erased packets.
摘要翻译：公开了一种多媒体分发系统。分配系统包括将内容从内容提供商分发到一个或多个无线用户单元的发射机单元。发射机单元包括解码器，其被配置为确定多个输入分组是否包括一个或多个擦除，被配置为将分组发送到接收单元的发射机，以及错误检测码发生器，被配置为生成每个发送到接收机单元的分组，针对每个被擦除的分组修改错误检测码，使得接收机单元将能够识别被擦除的分组。

10. 发明申请

US20070230490A1 Methods and apparatus for dynamic packet mapping 有权
标题翻译：动态分组映射的方法和装置
公开(公告)号：US20070230490A1
公开(公告)日：2007-10-04
申请号：US11398156
申请日：2006-04-04
申请人： Jinxia Bai , Chinnappa Ganapathy , Thomas Sun
发明人： Jinxia Bai , Chinnappa Ganapathy , Thomas Sun
IPC分类号： H04L12/56
CPC分类号： H04N21/434 , H04L27/2647 , H04L49/9078 , H04W8/26 , H04W28/14
摘要： Methods and apparatus for dynamic packet mapping. A method is provided for mapping metric data to produce a decodable packet associated with a channel. The method includes obtaining a channel identifier associated with metric data, determining an available buffer from a plurality of buffers based on the channel identifier, writing the metric data to the available buffer, detecting when a decodable packet is formed in a selected buffer of the plurality of buffers, and outputting the decodable packet from the selected buffer. An apparatus includes a plurality of buffers and mapping logic that is configured to obtain a channel identifier associated with metric data, determine an available buffer based on the channel identifier, write the metric data to the available buffer, detect when a decodable packet is formed in a selected buffer, and output the decodable packet from the selected buffer.
摘要翻译：动态分组映射的方法和装置。提供了一种用于映射度量数据以产生与信道相关联的可解码分组的方法。该方法包括获取与度量数据相关联的信道标识符，基于信道标识确定来自多个缓冲器的可用缓冲器，将度量数据写入可用缓冲器，检测何时在多个选定缓冲器中形成可解码分组并且从所选择的缓冲器输出可解码分组。一种装置包括多个缓冲器和映射逻辑，其被配置为获得与度量数据相关联的信道标识符，基于信道标识确定可用缓冲器，将度量数据写入可用缓冲器，检测何时形成可解码分组选择的缓冲器，并从所选缓冲器输出可解码分组。

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