公开(公告)号：US20100279701A1

公开(公告)日：2010-11-04

申请号：US12501048

申请日：2009-07-10

申请人： Dayong Chen

发明人： Dayong Chen

IPC分类号： H04W72/08

CPC分类号： H04L1/0002 ,  H04L1/0009 ,  H04L1/0017 ,  H04L1/0025 ,  H04L1/20 ,  H04L27/2089 ,  H04W24/10 ,  H04W52/143 ,  H04W52/346 ,  H04W88/08

摘要： A method and apparatus in a base station for jointly controlling sub-channel transmission power and assigned codec modes for a first and second mobile station utilizing Voice services over Adaptive Multi-user channel on One Slot (VAMOS). The base station receives signal quality information reports from the mobile stations every 480 ms using the Slow Associated Control Channel (SACCH), and receives codec mode requests from the mobile stations every 40 ms using Adaptive Multi-Rate (AMR) in-band signaling. The base station associates the requested codec modes with estimated levels of speech quality currently being experienced by the first and second mobile stations. The base station then allocates sub-channel transmission power and assigns codec modes to the first and second mobile stations based on the estimated levels of speech quality associated with the requested codec modes and the signal quality reports.

摘要翻译： 一种用于在一个时隙（VAMOS）上通过自适应多用户信道利用语音服务的第一和第二移动台共同控制子信道传输功率和分配的编解码器模式的基站中的方法和装置。 基站使用慢关联控制信道（SACCH）每480ms从移动台接收信号质量信息报告，并且使用自适应多速率（AMR）带内信令从40ms接收来自移动站的编解码器模式请求。 基站将请求的编解码方式与当前由第一和第二移动台经历的语音质量的估计级别相关联。 基站然后基于与所请求的编解码器模式和信号质量报告相关联的所估计的语音质量水平来分配子信道传输功率并将编解码器模式分配给第一和第二移动站。

公开(公告)号：US20080282125A1

公开(公告)日：2008-11-13

申请号：US11746679

申请日：2007-05-10

申请人： Abdulrauf Hafeez ,  Dayong Chen ,  Dennis Hui

发明人： Abdulrauf Hafeez ,  Dayong Chen ,  Dennis Hui

IPC分类号： H04L1/18

CPC分类号： H04L1/1845 ,  H04L1/1812

摘要： In a wireless communication network using point-to-point or point-to-multipoint communications, this disclosure teaches the use of combined packets for retransmission and corresponding soft value processing at a receiver, wherein combined packets are formed as the logical combination of two or more previously transmitted packets and allow the receiver to use a single combined packet to correct one or more failed packets. For example, with the combined packet retransmission and corresponding soft value receiver processing as taught herein, a given receiver can use a given combined packet to correct bit errors in all (failed) packets comprising the combined packet as long as the bit errors in a failed packet do not overlap (or align) with bit errors in the other failed packets comprising the combined packet.

摘要翻译： 在使用点对点或点对多点通信的无线通信网络中，本公开教导了在接收机处使用组合分组进行重传和对应的软值处理，其中组合分组被形成为两个或 更先前传输的分组，并允许接收机使用单个组合分组来校正一个或多个故障分组。 例如，通过组合的分组重传和如本文所教导的相应的软值接收器处理，给定的接收机可以使用给定的组合分组来校正包括组合分组的所有（失败的）分组中的比特错误，只要失败的比特错误 分组不与包括组合分组的其他故障分组中的比特错误重叠（或对齐）。

公开(公告)号：US20080279182A1

公开(公告)日：2008-11-13

申请号：US11746920

申请日：2007-05-10

申请人： Abdulrauf Hafeez ,  Dayong Chen ,  Dennis Hui

发明人： Abdulrauf Hafeez ,  Dayong Chen ,  Dennis Hui

IPC分类号： H04L12/56

CPC分类号： H04L1/0045 ,  H03M13/3761 ,  H04B7/15521 ,  H04L1/0054 ,  H04L1/1845 ,  H04L2001/0096

摘要： According to a method and apparatus taught herein, a network node includes a receiver circuit that determines soft values for received packets corresponding to the information bit groups associated with network coding operations, where the soft values are determined for each information bit group based on joint probabilities of the information bits within the information bit group. For example, first soft values are determined for the information bit groups in a first (received) constituent packet and second soft values are likewise determined for the information bit groups in a network-coded (received) packet that depends on the first constituent packet and a second constituent packet. Third soft values are generated for the information bit groups of the second constituent packet based on jointly evaluating the first and second soft values.

摘要翻译： 根据本文教导的方法和装置，网络节点包括接收机电路，其确定与与网络编码操作相关联的信息比特组对应的接收分组的软值，其中基于联合概率为每个信息比特组确定软值 信息位组内的信息位。 例如，为第一（接收）构成分组中的信息比特组确定第一软值，并且同样地确定依赖于第一组成分组的网络编码（接收）分组中的信息比特组的第二软值， 第二组成分组。 基于联合评估第一和第二软值，为第二组成分组的信息比特组生成第三软值。

公开(公告)号：US07418063B2

公开(公告)日：2008-08-26

申请号：US10002722

申请日：2001-11-16

申请人： Dayong Chen ,  Leonard Lee

发明人： Dayong Chen ,  Leonard Lee

IPC分类号： H03D1/00 ,  H04L27/06

CPC分类号： H04B7/2656

摘要： A wireless communications system receiver classifies a received burst as a DTX-high state normal burst or a DTX-low state truncated burst with a high probability of success. D1, the Euclidean distance between the known CDVCC and the bit position of CDVCC in a normal burst, is determined by calculating a confidence-weighted correlation between the two bit patterns. In a high-noise environment, D2, the Euclidean distance between the known CDVCC and the bit position of CDVCC in a truncated burst, is calculated. The ratio D1/D2 is compared to a threshold to classify the DTX state of the received burst. D1 and D2 may be normalized by dividing by the maximum average RSSI over the received burst, plotted on a graph of normalized D1 vs. normalized D2, and compared to a predetermined thresholding function that minimizes the probability of false classification. The thresholding function may be a piece-wise linear curve.

摘要翻译： 无线通信系统接收机将接收到的突发分类为具有高成功概率的DTX高状态正常突发或DTX低状态截断突发。 D1，通过计算两个比特模式之间的置信度加权相关性来确定已知CDVCC与正常突发中CDVCC的比特位置之间的欧几里德距离。 在高噪声环境中，D2计算已知CDVCC与截断脉冲串中CDVCC位位置之间的欧几里德距离。 将比率D1 / D2与阈值进行比较，以对接收的脉冲串的DTX状态进行分类。 D1和D2可以通过除以接收脉冲串上的最大平均RSSI而被归一化，其绘制在归一化D1与标准化D2的图上，并与将误分类概率最小化的预定阈值函数进行比较。 阈值函数可以是分段线性曲线。

公开(公告)号：US06728323B1

公开(公告)日：2004-04-27

申请号：US09612713

申请日：2000-07-10

申请人： Dayong Chen ,  Evin Feli

发明人： Dayong Chen ,  Evin Feli

IPC分类号： H04L2706

CPC分类号： H04L1/1829 ,  H03M13/3738 ,  H03M13/3776 ,  H04L1/0068 ,  H04L1/1812

摘要： Methods, systems, baseband processors, mobile terminals and base stations are provided for decoding a punctured coded signal are provided. The signal is received to provide received symbols. Symbol positions associated with punctured locations are initialized to default symbol values. The received symbols and the default symbol values are error correction decoded to provide first signal estimates. Punctured location symbol estimates are generated based on the first signal estimates and the received symbols are combined with the punctured location symbol estimates placed in corresponding punctured locations. The combined received symbols with the punctured location symbol estimates are error correction decoded to provide second signal estimates.

摘要翻译： 提供了用于解码穿孔编码信号的方法，系统，基带处理器，移动终端和基站。 接收信号以提供接收到的符号。 与穿孔位置相关联的符号位置被初始化为默认符号值。 对接收的符号和默认符号值进行纠错解码以提供第一信号估计。 基于第一信号估计产生穿刺位置符号估计，并且将接收的符号与放置在相应的穿孔位置中的穿孔位置符号估计组合。 具有穿孔位置符号估计的组合接收符号被解码以提供第二信号估计。

公开(公告)号：US20130064332A1

公开(公告)日：2013-03-14

申请号：US13609865

申请日：2012-09-11

申请人： Dayong Chen

发明人： Dayong Chen

IPC分类号： H04L27/06

CPC分类号： H04L25/03203 ,  H03M13/4146

摘要： A demodulator is provided that functions as a reduced-state equalizer and produces reliable soft bit values. According to an embodiment, soft bit values are generated for a sequence of transmitted symbols using a demodulator by updating an M-state trellis managed by the demodulator responsive to a transition from symbol time n−1 to symbol time n, where M is a function of the number of bits per symbol in the sequence of transmitted symbols. Survivor metrics associated with the M states of the trellis are saved each symbol time so that the demodulator can calculate soft bit values with regard to transitions from symbol time n+D−1 to symbol time n+D. The trellis is traced back through to calculate soft bit values for a symbol detected at symbol time n−D based on survivor metrics saved for the M states at symbol time n−D.

摘要翻译： 提供了一种解调器，用作减小均衡器并产生可靠的软比特值。 根据实施例，响应于从符号时间n-1到符号时间n的转变，通过更新由解调器管理的M状态网格，使用解调器为发送符号的序列生成软比特值，其中M是函数 的发送符号序列中每个符号的位数。 与每个符号时间保存与网格的M个状态相关联的幸存者度量，使得解调器可以计算关于从符号时间n + D-1到符号时间n + D的转换的软比特值。 网格被追溯到通过基于在符号时间n-D处为M个状态保存的幸存度量来计算在符号时间n-D处检测到的符号的软比特值。

公开(公告)号：US08205140B2

公开(公告)日：2012-06-19

申请号：US11746920

申请日：2007-05-10

申请人： Abdulrauf Hafeez ,  Dayong Chen ,  Dennis Hui

发明人： Abdulrauf Hafeez ,  Dayong Chen ,  Dennis Hui

IPC分类号： H03M13/00

CPC分类号： H04L1/0045 ,  H03M13/3761 ,  H04B7/15521 ,  H04L1/0054 ,  H04L1/1845 ,  H04L2001/0096

摘要： According to a method and apparatus taught herein, a network node includes a receiver circuit that determines soft values for received packets corresponding to the information bit groups associated with network coding operations, where the soft values are determined for each information bit group based on joint probabilities of the information bits within the information bit group. For example, first soft values are determined for the information bit groups in a first (received) constituent packet and second soft values are likewise determined for the information bit groups in a network-coded (received) packet that depends on the first constituent packet and a second constituent packet. Third soft values are generated for the information bit groups of the second constituent packet based on jointly evaluating the first and second soft values.

摘要翻译： 根据本文教导的方法和装置，网络节点包括接收机电路，其确定与与网络编码操作相关联的信息比特组对应的接收分组的软值，其中基于联合概率为每个信息比特组确定软值 信息位组内的信息位。 例如，为第一（接收）构成分组中的信息比特组确定第一软值，并且同样地确定依赖于第一组成分组的网络编码（接收）分组中的信息比特组的第二软值， 第二组成分组。 基于联合评估第一和第二软值，为第二组成分组的信息比特组生成第三软值。

公开(公告)号：US20110150154A1

公开(公告)日：2011-06-23

申请号：US12641450

申请日：2009-12-18

申请人： Dayong Chen

发明人： Dayong Chen

IPC分类号： H04B1/10

CPC分类号： H04L25/0212 ,  H04L25/0224 ,  H04L25/025 ,  H04L25/03299 ,  H04L25/03993

摘要： A hybrid channel estimator for a wireless communication system receiver includes both correlation based and least squares based channel estimators. The correlation estimator is used when signal quality is low or noise is colored. The least squares estimator is used when signal quality is high or noise is white. An interference suppression filter improves signal quality by suppressing interference in a received signal. Generally, correlation channel estimation is performed initially, when signal quality is low and noise is colored, and interference suppression filtering is performed to increase signal quality by removing certain portion of interference and whitening the overall impairment spectrum. These may be done iteratively. When the signal quality improves, least squares channel estimation is performed, which may also be iterative. The training sequence and noise may be whitened prior to performing least squares channel estimation, which is the final operation before channel estimates are forwarded to a demodulator.

摘要翻译： 用于无线通信系统接收机的混合信道估计器包括基于相关和基于最小二乘的信道估计器。 当信号质量低或噪声有色时，使用相关估计器。 当信号质量高或噪声为白色时，使用最小二乘估计器。 干扰抑制滤波器通过抑制接收信号中的干扰来提高信号质量。 一般来说，当信号质量低，噪声有色时，首先执行相关信道估计，并且通过去除某些部分干扰并使整个损伤谱变白来执行干扰抑制滤波以提高信号质量。 这些可以迭代地进行。 当信号质量提高时，执行最小二乘方信道估计，其也可以是迭代的。 在执行最小二乘信道估计之前，训练序列和噪声可能变白，这是在信道估计被转发到解调器之前的最终操作。

公开(公告)号：US07616712B2

公开(公告)日：2009-11-10

申请号：US11381040

申请日：2006-05-01

申请人： Dayong Chen

发明人： Dayong Chen

IPC分类号： H04L27/06

CPC分类号： H04L1/0047 ,  H04L1/0057 ,  H04L1/0059 ,  H04L1/20 ,  H04L1/201

摘要： A received information signal is decoded to obtain the received information and to produce at least one feature of the received information signal. The received information signal is preliminarily classified as containing a normal burst or a truncated burst based upon the at least one feature, to obtain a preliminary classification. Cyclic redundancy checking of the received information that is decoded is performed. The received information signal is then further classified as containing a normal burst or a truncated burst based upon the preliminary classification and whether the cyclic redundancy checking is valid, to obtain a further classification. The received information signal may be still further classified as containing a normal burst or a truncated burst based upon the further classification and at least one transition rule for normal bursts and truncated bursts between the received information signal and a previously received information signal.

摘要翻译： 对接收到的信息信号进行解码以获得所接收的信息并产生所接收的信息信号的至少一个特征。 所接收的信息信号基于至少一个特征被初步分类为包含正常突发或截断突发，以获得初步分类。 执行被解码的接收信息的循环冗余校验。 接收到的信息信号随后根据初步分类进一步分类为包含正常突发或截断突发，以及循环冗余校验是否有效，以获得进一步的分类。 所接收的信息信号可以进一步分类为包含基于进一步分类的正常突发或截断突发，以及用于接收的信息信号和先前接收到的信息信号之间的正常突发和截断突发的至少一个转换规则。

公开(公告)号：US07600164B2

公开(公告)日：2009-10-06

申请号：US11016643

申请日：2004-12-17

申请人： Dayong Chen

发明人： Dayong Chen

IPC分类号： G06F11/00 ,  G11C29/00

CPC分类号： H03M13/6502 ,  H03M13/2703 ,  H03M13/2767

摘要： A method of mapping input bit positions in an input sequence to output bit positions in an output sequence uses compressed mapping sequences stored in memory derived from a predetermined mapping function. The mapping function is decompressed into periodic component functions that are used to generate the compressed mapping sequences. Each compressed mapping sequence comprises a plurality of partial mapping values that represent one period of a corresponding component function or group of component functions. Partial mapping values are selected from each compressed mapping sequence based on a bit index of the current input bit and summed or otherwise combined to get an output index.

摘要翻译： 将输入序列中的输入位位置映射到输出序列中的输出位位置的方法使用存储在从预定映射函数导出的存储器中的压缩映射序列。 映射函数被解压缩为用于生成压缩映射序列的周期性组件函数。 每个压缩映射序列包括表示对应的组件功能或组件功能组的一个周期的多个部分映射值。 基于当前输入位的位索引从每个压缩映射序列中选择部分映射值，并将其相加或组合以获得输出索引。