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。

公开(公告)号：US20090268656A1

公开(公告)日：2009-10-29

申请号：US12110658

申请日：2008-04-28

Applicant: Nabil Yousef

Inventor： Nabil Yousef

IPC: H04B7/14

CPC classification number: H04N21/6112 ,  H04N21/2362 ,  H04N21/41407 ,  H04N21/4381 ,  H04N21/44004 ,  H04N21/4828

Abstract: A technique for fast common overhead services acquisition for MediaFLO™ mobile multimedia multicast system, wherein encoding overhead information symbol (OIS) information in a first burst of MLC of each superframe, OIS comprises control channel (CC) information and reserved flow data comprising primary flow data, service information data, notification flow data, configuration flow data, and presentation metadata; encoding padding in second MLC burst; encoding parity bytes in third and fourth MLC bursts; encoding primary flow data in final MLC burst per superframe; encoding the remaining reserved flow data at the end of superframe; transmitting wireless data stream comprising first MLC at ½ forward error correction (FEC) rate and receiving it in receiver; determining a correctness of CC information by checking cyclic redundancy check (CRC) bits at the end of each received data packet; and transmitter sending size wise remainder of reserved flows at the end of superframe.

Abstract translation: 一种用于MediaFLO TM移动多媒体多播系统的快速常规开销服务采集的技术，其中在每个超帧的MLC的第一突发中编码开销信息符号（OIS）信息，OIS包括控制信道（CC）信息和保留流数据， 主流数据，服务信息数据，通知流数据，配置流数据和呈现元数据; 在第二MLC突发中编码填充; 在第三和第四MLC突发中编码奇偶校验字节; 在每个超帧的最终MLC突发中编码主流数据; 在超帧结束时编码剩余的保留流数据; 以前向纠错（FEC）速率传输包括第一MLC的无线数据流并在接收机中接收它; 通过检查每个接收到的数据分组的结尾处的循环冗余校验（CRC）比特来确定CC信息的正确性; 并且发送器在超帧结束时发送大量明智的剩余保留流。

公开(公告)号：US20090252026A1

公开(公告)日：2009-10-08

申请号：US12062695

申请日：2008-04-04

Applicant: Nabil Yousef

Inventor： Nabil Yousef

IPC: H04J11/00

CPC classification number: H04L27/2656 ,  H04L27/2613 ,  H04L27/2659 ,  H04L27/266 ,  H04L27/2665

Abstract: An apparatus, logic, and method of performing timing and frequency estimation in a MediaFLO™ mobile multimedia multicast system comprising a receiver and a transmitter, wherein the method comprises receiving a wireless data stream comprising a MediaFLO™ mobile multimedia multicast system superframe comprising Orthogonal Frequency Division Multiplexing (OFDM) symbols; estimating a Fast Fourier Transform (FFT) trigger point for each of the received OFDM symbols; estimating a fine carrier frequency offset of each OFDM symbol; determining the start of the MediaFLO™ mobile multimedia multicast system superframe by locating a Time Division Multiplexed (TDM) pilot symbol in the superframe; estimating a coarse carrier frequency offset of each of the received OFDM symbols; and synchronizing the receiver to the start of the MediaFLO™ mobile multimedia multicast system superframe and the transmitted OFDM symbols based on the fine carrier frequency offset, the TDM pilot symbol, and the coarse carrier frequency offset.

Abstract translation: 一种在包括接收机和发射机的MediaFLO TM移动多媒体多播系统中执行定时和频率估计的装置，逻辑和方法，其中所述方法包括：接收无线数据流，所述无线数据流包括MediaFLO TM移动多媒体多播系统超帧 包括正交频分复用（OFDM）符号; 估计每个所接收的OFDM符号的快速傅里叶变换（FFT）触发点; 估计每个OFDM符号的精细载波频率偏移; 通过在超帧中定位时分复用（TDM）导频符号来确定MediaFLO TM移动多媒体多播系统超帧的开始; 估计每个所接收的OFDM符号的粗略载波频率偏移; 以及基于精细载波频率偏移，TDM导频符号和粗略载波频率偏移，将接收机同步到MediaFLO TM移动多媒体多播系统超帧的开始和发送的OFDM符号。