公开(公告)号：US07447980B2

公开(公告)日：2008-11-04

申请号：US11251721

申请日：2005-10-17

Applicant: Bin Xu ,  Nabil Yousef

Inventor： Bin Xu ,  Nabil Yousef

IPC: H03M13/00

CPC classification number: H03M13/1515 ,  H03M13/09 ,  H03M13/154 ,  H03M13/2906 ,  H03M13/2915 ,  H03M13/293 ,  H03M13/2948 ,  H03M13/373 ,  H03M13/6541

Abstract: A system and method of using recursive cyclic redundancy check (CRC)+forward error correction (FEC) for enhancing the channel coding gain for a DVB-H receiver, and using a physical (PHY) Reed-Solomon (RS) decoder+FEC to achieve better coding gain. The system and method utilize a dual mode RS decoder (erasure mode and error mode) for FEC decoding. The PHY RS is used to provide smaller granularity for FEC. The system includes a cache memory management scheme for implementing the recursive CRC/RS+FEC in very large scale integrated circuit chip (VLSI) hardware.

Abstract translation: 一种使用递归循环冗余校验（CRC）+前向纠错（FEC）的系统和方法，用于增强DVB-H接收机的信道编码增益，并使用物理（PHY）里德 - 所罗门（RS）解码器+ FEC 实现更好的编码增益。 该系统和方法利用双模式RS解码器（擦除模式和错误模式）进行FEC解码。 PHY RS用于为FEC提供较小的粒度。 该系统包括用于在超大规模集成电路芯片（VLSI）硬件中实现递归CRC / RS + FEC的高速缓冲存储器管理方案。

公开(公告)号：US20070089038A1

公开(公告)日：2007-04-19

申请号：US11251721

申请日：2005-10-17

Applicant: Bin Xu ,  Nabil Yousef

Inventor： Bin Xu ,  Nabil Yousef

IPC: H03M13/00

CPC classification number: H03M13/1515 ,  H03M13/09 ,  H03M13/154 ,  H03M13/2906 ,  H03M13/2915 ,  H03M13/293 ,  H03M13/2948 ,  H03M13/373 ,  H03M13/6541

Abstract: A system and method of using recursive cyclic redundancy check (CRC)+forward error correction (FEC) for enhancing the channel coding gain for a DVB-H receiver, and using a physical (PHY) Reed-Solomon (RS) decoder+FEC to achieve better coding gain. The system and method utilize a dual mode RS decoder (erasure mode and error mode) for FEC decoding. The PHY RS is used to provide smaller granularity for FEC. The system includes a cache memory management scheme for implementing the recursive CRC/RS+FEC in very large scale integrated circuit chip (VLSI) hardware.

Abstract translation: 一种使用递归循环冗余校验（CRC）+前向纠错（FEC）的系统和方法，用于增强DVB-H接收机的信道编码增益，并使用物理（PHY）里德 - 所罗门（RS）解码器+ FEC 实现更好的编码增益。 该系统和方法利用双模式RS解码器（擦除模式和错误模式）进行FEC解码。 PHY RS用于为FEC提供较小的粒度。 该系统包括用于在超大规模集成电路芯片（VLSI）硬件中实现递归CRC / RS + FEC的高速缓冲存储器管理方案。

公开(公告)号：US08000395B2

公开(公告)日：2011-08-16

申请号：US11440298

申请日：2006-05-24

Applicant: Nabil Yousef

Inventor： Nabil Yousef

IPC: H04N7/18

CPC classification number: H04N21/64315 ,  H04N21/23655 ,  H04N21/2381 ,  H04N21/2389 ,  H04N21/4385

Abstract: A DVB-H transmitter having a plurality of video encoders each having a variable bit rate associated with IP datagrams for each television program broadcast by one RF channel. A method is also provided for statistical multiplexing of video channels for DVB-H mobile TV applications, wherein the method includes jointly configuring a plurality of video encoders each having a variable bit rate associated with IP datagrams for each television program broadcast by one RF channel.

Abstract translation: 具有多个视频编码器的DVB-H发射机，每个视频编码器具有与由一个RF信道广播的每个电视节目的IP数据报相关联的可变比特率。 还提供了一种用于DVB-H移动TV应用的视频信道的统计复用的方法，其中该方法包括联合配置多个视频编码器，每个视频编码器具有与由一个RF信道广播的每个电视节目的IP数据报相关联的可变比特率。

公开(公告)号：US07940864B2

公开(公告)日：2011-05-10

申请号：US12110637

申请日：2008-04-28

Applicant: Ricardo Merched ,  Nabil Yousef

Inventor： Ricardo Merched ,  Nabil Yousef

IPC: H04L27/00

CPC classification number: H04L25/0224 ,  H04L25/022 ,  H04L25/024 ,  H04L25/0244

Abstract: An apparatus and method of applying a fast algorithm to a pilot-based channel estimation process includes receiving, in a receiver, a signal comprising information bits transmitted in a wireless channel, executing a pilot-based channel estimation process running on a decision-directed turbo estimation procedure having a p structure for a vector of pilots and an upper bound N for a channel spread based on a feedback of detected information bits via OFDM, encoding the detected information bits, re-encoding the detected information bits at a decoder output, re-constructing and subtracting an ICI term from the received signal, modulating the detected information bits, estimating channel symbols in a per-carrier basis based on a diagonal matrix of a full matrix involved in the pilot-based channel estimation, and performing training of the wireless channel based on an entire vector of the channel symbols.

Abstract translation: 一种将快速算法应用于基于导频的信道估计过程的装置和方法包括在接收机中接收包括在无线信道中发送的信息比特的信号，执行在决策导向涡轮上运行的基于导频的信道估计过程 估计过程具有用于导频矢量的ap结构和用于通过OFDM的检测到的信息比特的反馈的信道扩展的上限N，对所检测的信息比特进行编码，在解码器输出处重新编码检测到的信息比特， 根据接收到的信号构造和减去ICI项，调制检测到的信息比特，基于在基于导频的信道估计中涉及的全矩阵的对角矩阵，以每载波为基础估计信道符号，以及执行无线 基于信道符号的整个向量的信道。

公开(公告)号：US07804846B2

公开(公告)日：2010-09-28

申请号：US12124387

申请日：2008-05-21

Applicant: Samer Sarhan ,  Nabil Yousef

Inventor： Samer Sarhan ,  Nabil Yousef

IPC: H04J3/00

CPC classification number: H04L1/0079 ,  H04L5/0048

Abstract: Finding errors in the fragment headers of the fragments of service layer packets without depending on the erasure indicators of Medium Access Channel (MAC) layer packets of a wireless signal in a wireless communication system includes determining if length of the fragment header is between 121 and 127; determining if length of the fragment header is equal to 127, and if the fragment header is not the last fragment header in a service layer packet being formed; determining if summation of length of the fragment header for a value N is greater than 122 subtracted by number of fragments collected from a MAC layer packet including fragment header; and determining if fragment header is not the last fragment header in the service layer packet being formed, and if fragment header length is less than residual number of bytes in the MAC layer packet.

Abstract translation: 在不依赖于无线通信系统中的无线信号的介质访问信道（MAC）层分组的擦除指示符的情况下，在服务层分组的分段报头中查找错误包括确定分段报头的长度是否在121和127之间 ; 确定片段头的长度是否等于127，并且如果片段头不是正在形成的服务层包中的最后片段头; 根据从包含片段头的MAC层包收集的片段数，确定值N的片段头的长度的和是否大于122; 以及确定片段头不是正在形成的服务层分组中的最后片段头，并且如果片段头长度小于MAC层分组中的残留字节数。

公开(公告)号：US07782982B2

公开(公告)日：2010-08-24

申请号：US11923682

申请日：2007-10-25

Applicant: Nabil Yousef

Inventor： Nabil Yousef

IPC: H03D1/24

CPC classification number: H04L25/067 ,  H04L1/0054 ,  H04L1/0071 ,  H04L25/03248 ,  H04L25/03286 ,  H04L25/03318 ,  H04L2025/0342

Abstract: A receiver for use in a wireless network comprising a communications channel and a method of allocating deinterleaver memory usage in the receiver, wherein the receiver comprises a processor adapted to organize subchannels of the communications channel and set a number (N) of data bits per soft decision, wherein the soft decision is represented by N data bits; an address decoder adapted to decode the subchannels; a demapper adapted to receive QAM symbols and demap the QAM symbols to soft decisions; a deinterleaver adapted to perform deinterleaving on the soft decisions, wherein the deinterleaver comprises a memory component having a storage size that is a function of the number (N) of bits per soft decision; and a Viterbi decoder adapted to decode the deinterleaved soft decisions.

Abstract translation: 一种在包括通信信道的无线网络中使用的接收机以及在所述接收机中分配解交织器存储器使用的方法，其中所述接收机包括处理器，其适于组织所述通信信道的子信道并且设置每个软件的数目（N）个数据位 决定，其中所述软判决由N个数据位表示; 地址解码器，其适于解码所述子信道; 解映射器，适于接收QAM符号并将QAM符号解映射为软判决; 解交织器，其适于对所述软判决执行去交织，其中所述解交织器包括存储器组件，所述存储器组件具有作为每个软判决的位数（N）的函数的存储大小; 以及适于对解交织的软判决进行解码的维特比解码器。

公开(公告)号：US07729435B2

公开(公告)日：2010-06-01

申请号：US11834712

申请日：2007-08-07

Applicant: Mahmoud H. Ismail ,  Waleed Youris ,  Maged F. Barsoum ,  Nabil Yousef

Inventor： Mahmoud H. Ismail ,  Waleed Youris ,  Maged F. Barsoum ,  Nabil Yousef

IPC: H04K1/10 ,  H04L27/28

CPC classification number: H04L27/2656 ,  H04L27/2678

Abstract: Detecting Null symbols in a video data frame comprises sending OFDM symbols through a sliding windowed correlation process having a correlation window length proportional to a cyclic prefix length and a delay equal to a FFT size of the symbols, wherein output peaks of the process occur where two similar portions of the symbols coincide; checking peaks in windows sized equal to a duration of a symbol; determining whether the peaks are located in the middle of the windows; determining whether a shift has occurred in the location of the peak of a current window compared to in a second immediately previous window; determining whether the peak in a first immediately previous window is weak compared to that in a second immediately previous window; and declaring that a Null symbol exists in the first previous window when the shift has occurred and the determination of a weak peak exists.

Abstract translation: 检测视频数据帧中的空符号包括通过具有与循环前缀长度成比例的相关窗口长度和等于符号的FFT大小的延迟的滑动窗口相关处理来发送OFDM符号，其中过程的输出峰值发生在两个 符号的相似部分重合; 检查窗口大小等于符号持续时间的峰值; 确定峰是否位于窗的中间; 确定当前窗口的峰值位置与第二个紧接在前的窗口相比是否发生位移; 确定在第一紧邻前一窗口中的峰值是否比在第二紧接的前一窗口中的峰值弱; 并且当发生移位并且存在弱峰值的确定时，声明在第一先前窗口中存在空符号。

公开(公告)号：US07707611B2

公开(公告)日：2010-04-27

申请号：US11459366

申请日：2006-07-24

Applicant: Nabil Yousef

Inventor： Nabil Yousef

IPC: H04N7/16

CPC classification number: H04N21/4821 ,  H04N21/41407 ,  H04N21/4263 ,  H04N21/4331 ,  H04N21/4383

Abstract: A method of creating a visual program guide for use on a TDM mobile TV receiver comprises receiving a RF signal associated with a TV channel; demodulating all of the received RF signals associated with the TV channels; decoding all of the demodulated received RF signals corresponding to all the TV channels simultaneously; and creating the visual program guide as a consolidated view of each of the decoded TV channels, wherein the simultaneous decoding of the demodulated received RF signals significantly reduces a power consumption level and a memory utilization level in the receiver.

Abstract translation: 一种创建在TDM移动TV接收机上使用的可视节目指南的方法包括：接收与TV频道相关联的RF信号; 解调与TV信道相关联的所有接收到的RF信号; 解码所有与所有电视频道对应的接收的RF信号的所有解码; 以及创建视觉节目指南作为每个解码的TV频道的综合视图，其中所解调的接收的RF信号的同时解码显着地降低了接收机中的功耗水平和存储器利用水平。

公开(公告)号：US20090323871A1

公开(公告)日：2009-12-31

申请号：US12110622

申请日：2008-04-28

Applicant: Ricardo Merched ,  Nabil Yousef

Inventor： Ricardo Merched ,  Nabil Yousef

IPC: H04B1/10

CPC classification number: H04L25/0244 ,  H04L5/0053 ,  H04L25/021 ,  H04L25/022 ,  H04L25/0236 ,  H04L25/0246 ,  H04L25/0248 ,  H04L25/025 ,  H04L25/0256 ,  H04L25/03171 ,  H04L27/2647

Abstract: An apparatus and method of applying a superfast algorithm to a pilot-based channel estimation process includes receiving a signal comprising information bits transmitted in a wireless channel, executing the pilot-based channel estimation process having p structures for a vector of pilot structures and an upper bound N for a channel spread, determining a result of a matrix inversion of a channel correlation matrix for an error channel estimation offline without performing a matrix inversion, storing pilot information of the received signal for channel recovery in a transform domain, representing the Toeplitz inverse by a FFT representation, detecting and estimating nonzero taps of a channel impulse response of the wireless channel, obtaining a non-structured minimum mean-square-error (MMSE) estimate as a first estimate of locations of the nonzero taps, and replacing the non-structured MMSE estimate by an estimate computed by a tap detection algorithm.

Abstract translation: 一种将超快速算法应用于基于导频的信道估计过程的装置和方法包括：接收包括在无线信道中发送的信息比特的信号，执行具有用于导频结构向量的p个结构的基于导频的信道估计过程， 绑定N用于信道扩展，确定用于误差信道估计的信道相关矩阵的矩阵求逆的结果，而不执行矩阵求逆，在变换域中存储用于信道恢复的接收信号的导频信息，表示Toeplitz反相 通过FFT表示，检测和估计无线信道的信道脉冲响应的非零抽头，获得非结构化最小均方误差（MMSE）估计作为非零抽头的位置的第一估计， 通过抽头检测算法计算的估计结果化MMSE估计。

公开(公告)号：US20090268803A1

公开(公告)日：2009-10-29

申请号：US12110637

申请日：2008-04-28

Applicant: Ricardo Merched ,  Nabil Yousef

Inventor： Ricardo Merched ,  Nabil Yousef

IPC: H04L27/01 ,  H04L27/28

CPC classification number: H04L25/0224 ,  H04L25/022 ,  H04L25/024 ,  H04L25/0244

Abstract: An apparatus and method of applying a fast algorithm to a pilot-based channel estimation process includes receiving, in a receiver, a signal comprising information bits transmitted in a wireless channel, executing a pilot-based channel estimation process running on a decision-directed turbo estimation procedure having a p structure for a vector of pilots and an upper bound N for a channel spread based on a feedback of detected information bits via OFDM, encoding the detected information bits, re-encoding the detected information bits at a decoder output, re-constructing and subtracting an ICI term from the received signal, modulating the detected information bits, estimating channel symbols in a per-carrier basis based on a diagonal matrix of a full matrix involved in the pilot-based channel estimation, and performing training of the wireless channel based on an entire vector of the channel symbols.

Abstract translation: 一种将快速算法应用于基于导频的信道估计过程的装置和方法包括在接收机中接收包括在无线信道中发送的信息比特的信号，执行在决策导向涡轮上运行的基于导频的信道估计过程 估计过程具有用于导频矢量的ap结构和用于通过OFDM的检测到的信息比特的反馈的信道扩展的上限N，对所检测的信息比特进行编码，在解码器输出处重新编码检测到的信息比特， 根据接收到的信号构造和减去ICI项，调制检测到的信息比特，基于在基于导频的信道估计中涉及的全矩阵的对角矩阵，以每载波为基础估计信道符号，以及执行无线 基于信道符号的整个向量的信道。