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1. 发明申请

WO2007047199A3 ERROR DETECTION AND CORRECTION IN DATA TRANSMISSION PACKETS 审中-公开
公开(公告)号：WO2007047199A3
公开(公告)日：2007-04-26
申请号：PCT/US2006/039384
申请日：2006-10-06
申请人： NEWPORT MEDIA, INC. , XU, Bin , YOUSEF, Nabil
发明人： XU, Bin , YOUSEF, Nabil
IPC分类号： G11C29/00 , H04N7/26
摘要： A system and method (700) 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 (701) for implementing the recursive CRC/RS +FEC in very large scale integrated circuit chip (VLSI) hardware.

2. 发明申请

WO2007149630A2 AN EFFICIENT DOPPLER COMPENSATION METHOD AND RECEIVER FOR ORTHOGONAL-FREQUENCY-DIVISION-MULTIPLEXING (OFDM) SYSTEMS 审中-公开
标题翻译：正交频分复用（OFDM）系统的高效多普勒补偿方法和接收器
公开(公告)号：WO2007149630A2
公开(公告)日：2007-12-27
申请号：PCT/US2007/067742
申请日：2007-04-30
申请人： NEWPORT MEDIA, INC.
发明人： MERCHED, Ricardo , YOUSEF, Nabil
IPC分类号： H04B1/00 , H04B17/00
CPC分类号： H04L27/3854 , H04B17/309 , H04L27/2602
摘要： A receiver and method of enhancing transmitted data signals in a wireless communications system includes wirelessly transmitting and receiving a data signal over a wireless channel in the communications system; providing known channel parameters corresponding to the wireless channel; expressing the data signal as an input data vector; replacing indexes in the input data vector having a magnitude greater than one into indexes in the input data vector having a unit norm; creating an output data vector; and calculating a dot product of (i) the input data vector comprising replaced indexes; and (ii) the output data vector, wherein the calculating process equalizes the data signal received by a receiver in the presence of Doppler frequency shifts of the data signal.
摘要翻译：一种在无线通信系统中增强发射数据信号的接收机和方法包括：在通信系统中的无线信道上无线发送和接收数据信号; 提供对应于无线信道的已知信道参数; 将数据信号表示为输入数据矢量; 将具有大于1的幅度的输入数据向量中的索引替换为具有单位范数的输入数据向量中的索引; 创建输出数据向量; 并计算（i）包括替代索引的输入数据矢量的点积; 和（ii）所述输出数据矢量，其中所述计算处理在数据信号的多普勒频移的存在下均衡由接收机接收的数据信号。

3. 发明申请

WO2007103955A3 SYSTEM AND METHOD FOR DIGITAL AUTONOMOUS AUTOMATIC GAIN CONTROL (AGC) FOR DVB-H RECEIVERS 审中-公开
公开(公告)号：WO2007103955A3
公开(公告)日：2007-09-13
申请号：PCT/US2007/063444
申请日：2007-03-07
申请人： NEWPORT MEDIA, INC.
发明人： ISMAIL, Aly , SIVASUBRAMANIAM, Janakan , YUSSOUFIAN, Edward , YOUSEF, Nabil , CARR, Frank
IPC分类号： H04B1/04
摘要： Digital autonomous AGC for a DVB-H receiver comprises detecting a plurality of RF signals entering a LNA in the DVB-H receiver; detecting a RF transmitter blocker signal occurring at the LNA; and differentiating between a desired RF signal and an undesired RF transmitter blocker signal by varying a differential gain of current through the LNA. A RF servo loop is used for detecting the RF transmitter blocker signal. Logic circuitry of the RF servo loop is integrated with a baseband AGC loop to step control the differential gain of current through the LNA. A RF wideband detector is used for detecting the plurality of RF signals entering the LNA; and sending a voltage output corresponding to voltage levels of the RF signals to a plurality of comparators, wherein each of the plurality of comparators are set at a different programmable voltage threshold level compared with one another.

4. 发明申请

WO2007081604A2 FAST SWITCHING BETWEEN TIME DIVISION MULTIPLEXED (TDM) CHANNELS 审中-公开
标题翻译：时分多路复用（TDM）通道之间的快速切换
公开(公告)号：WO2007081604A2
公开(公告)日：2007-07-19
申请号：PCT/US2006/060829
申请日：2006-11-13
申请人： NEWPORT MEDIA, INC.
发明人： YOUSEF, Nabil
IPC分类号： H04N5/50 , H04N7/173 , H04N7/16
CPC分类号： H04N5/50 , H04N5/38 , H04N5/4401 , H04N21/2365 , H04N21/41407 , H04N21/4347 , H04N21/4384 , H04N21/44004 , H04N21/4532 , H04N21/64315
摘要： A system and method of reducing a channel switching delay in TDM mobile television systems comprises transmitting a sequence of data bursts associated with channels for reception on a RF channel bandwidth received on a mobile television receiver; switching between an active state of transmission and a non-active state of transmission during reception of channels on the RF channel bandwidth, wherein the active state of transmission comprises transmission of data bursts associated with user-preferred channels and the non-active state of transmission comprises transmission of data bursts associated with user non-preferred channels; anticipating a particular user-preferred channel that a user will likely switch to during reception of channels on the RF channel bandwidth; decoding the sequence of data bursts during the active state of transmission; buffering one decoded data burst for each of the user-preferred channels; and replacing a previously buffered data burst with a newly buffered data burst.
摘要翻译：降低TDM移动电视系统中的信道切换延迟的系统和方法包括在移动电视接收机上接收的RF信道带宽上发送与用于接收的信道相关联的数据突发序列; 在RF信道带宽上的信道接收期间在传输的活动状态和非活动状态的传输之间进行切换，其中传输的活动状态包括传输与用户优选信道相关联的数据突发和非活动传输状态包括与用户非优选信道相关联的数据突发的传输; 预期在RF信道带宽上的信道接收期间用户可能切换的特定用户优选信道; 在传输的活动状态期间解码数据突发序列; 缓冲用于每个用户优选信道的一个解码数据突发; 并用新缓冲的数据突发替换先前缓冲的数据突发。

5. 发明申请

WO2008079457A1 FAST RE-SYNCHRONIZATION TECHNIQUES FOR DVB-H SYSTEMS 审中-公开
标题翻译： DVB-H系统的快速重新同步技术
公开(公告)号：WO2008079457A1
公开(公告)日：2008-07-03
申请号：PCT/US2007/077485
申请日：2007-09-04
申请人： NEWPORT MEDIA, INC.
发明人： MA, Jun , CHEN, Chaoliang, T. , YOUSEF, Nabil
IPC分类号： H04J3/06
CPC分类号： H04L27/2655 , H04L27/266 , H04L27/2662 , H04L27/2685 , H04N21/4382 , H04N21/64315
摘要： A system and method of performing re-synchronization for a Digital Video Broadcasting over Handheld (DVB-H) receiver comprises performing a time division multiplexing (TDM) data burst transmission sequence on bits of data received by the DVB-H receiver; performing a data bit re-synchronization sequence on the DVB-H receiver; and reducing a re-acquisition time at every stage of the data bit re-synchronization sequence, wherein the reducing process results in a reduction in the time to perform the re-synchronization for the DVB-H receiver, wherein the reduction in the time to perform the re-synchronization for the DVB-H receiver is greater than one-half of the time required to perform the re-synchronization for the DVB-H receiver absent the reducing of the re-acquisition time at every stage of the data bit re-synchronization sequence.
摘要翻译：对DVB-H数字视频广播（DVB-H）接收机执行重新同步的系统和方法包括对由DVB-H接收机接收的数据的比特执行时分复用（TDM）数据突发传输序列; 在DVB-H接收机上执行数据比特重新同步序列; 并且在数据比特重新同步序列的每个阶段减少重新采集时间，其中所述减少处理导致对DVB-H接收机执行重新同步的时间的减少，其中将时间的减少执行DVB-H接收机的重新同步大于执行DVB-H接收机重新同步所需的时间的一半，而不需要在数据比特的每个阶段减少重新获取时间 - 同步序列。

6. 发明申请

WO2008014030A3 A RECEIVER WITH A VISUAL PROGRAM GUIDE FOR MOBILE TELEVISION APPLICATIONS AND METHOD FOR CREATION 审中-公开
公开(公告)号：WO2008014030A3
公开(公告)日：2008-01-31
申请号：PCT/US2007/067740
申请日：2007-04-30
申请人： NEWPORT MEDIA, INC.
发明人： YOUSEF, Nabil
IPC分类号： H04N7/173
摘要： 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.

7. 发明申请

WO2007140066A3 SYSTEM AND METHOD FOR STATISTICAL MULTIPLEXING OF VIDEO CHANNELS FOR DVB-H MOBILE TV APPLICATIONS 审中-公开
公开(公告)号：WO2007140066A3
公开(公告)日：2007-12-06
申请号：PCT/US2007/067745
申请日：2007-04-30
申请人： NEWPORT MEDIA, INC.
发明人： YOUSEF, Nabil
IPC分类号： H04N5/76
摘要： 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.

8. 发明申请

WO2009032385A1 ADAPTIVE TIME-DOMAIN INTERPOLATION FOR OFDM SCATTERED PILOT SYMBOLS 审中-公开
标题翻译： OFDM散射引导符号的自适应时域插值
公开(公告)号：WO2009032385A1
公开(公告)日：2009-03-12
申请号：PCT/US2008/067278
申请日：2008-06-18
申请人： NEWPORT MEDIA, INC.
发明人： SADEK, Mirette , YOUSEF, Nabil
IPC分类号： H04J11/00 , H04L27/32 , H04L7/00 , H04K1/10
CPC分类号： H04L5/0007 , H04L5/0048 , H04L25/0204 , H04L25/0216 , H04L25/0226 , H04L25/0232
摘要： A receiver for use in a pilot-aided OFDM system and a method of performing channel length estimation of a channel in a wireless communication system includes using transmitted and received wireless signals to estimate a channel carrier function vector at continuous and scattered pilot positions of consecutive OFDM symbols; performing time-domain interpolation by (i) upsampling the estimated the channel carrier function vectors at the scattered pilot positions by inserting zeros in between estimated scattered pilot positions, and (ii) filtering the upsampled vectors using a finite impulse response filter comprising a filter bank comprising a plurality of filters; mapping the channel carrier function vector to only one of the filters in the filter bank located in the finite impulse response filter, wherein the mapping causes noise reduction and enhanced channel estimation thereby increasing a maximum Doppler frequency in the channel.
摘要翻译：在导频辅助OFDM系统中使用的接收机和在无线通信系统中执行信道长度估计的方法包括使用发送和接收的无线信号来估计连续OFDM连续和分散导频位置的信道载波函数向量符号; （i）通过在估计的分散导频位置之间插入零来对估计出的散射导频位置处的信道载波函数向量进行上采样，以及（ii）使用包括滤波器组的有限脉冲响应滤波器对上采样向量进行滤波来执行时域内插包括多个过滤器; 将信道载波函数向量映射到位于有限脉冲响应滤波器中的滤波器组中仅一个滤波器，其中映射引起噪声降低和增强的信道估计，从而增加信道中的最大多普勒频率。

9. 发明申请

WO2009002773A2 COHERENT DETECTION FOR DIFFERENTIALLY ENCODED OFDM SYSTEMS 审中-公开
标题翻译：用于差分编码OFDM系统的相关检测
公开(公告)号：WO2009002773A2
公开(公告)日：2008-12-31
申请号：PCT/US2008/067274
申请日：2008-06-18
申请人： NEWPORT MEDIA, INC.
发明人： YOUSEF, Nabil
IPC分类号： H04J11/00 , H04N5/44
CPC分类号： H04L27/2647 , H04L27/2075 , H04L27/2331
摘要： A method and system for coherent detection in which a OFDM symbol is multiplied by the complex conjugate of the previous OFDM symbol, which is obtained by one OFDM symbol delay and a complex conjugation circuit. This soft decision is passed through a QPSK slicer to obtain a hard decision. The soft decision is then divided by the hard decisions. The channel phase change between the two OFDM symbols is then obtained. For the first OFDM symbol, the channel is computed. A channel estimate for each ODFM symbol is computed from corresponding channel estimates and channel phase difference estimates. The channel phase difference between each two OFM symbols is computed. The channel phase difference is passed through an exponent operation and multiplied by the soft decision to obtain a refined soft decision that is then passed through another QPSK slicer to obtain the final hard decision.
摘要翻译：一种用于相干检测的方法和系统，其中OFDM符号乘以由一个OFDM符号延迟获得的先前OFDM符号的复共轭和复共轭电路。该软判决通过QPSK限幅器获得硬判决。然后，软判决被硬决定划分。然后获得两个OFDM符号之间的信道相位变化。对于第一个OFDM符号，计算通道。从相应的信道估计和信道相位差估计来计算每个ODFM符号的信道估计。计算每两个OFM符号之间的信道相位差。信道相位差通过指数运算并乘以软判决，以获得精细的软判决，然后通过另一QPSK限幅器传递以获得最终的硬判决。

10. 发明申请

WO2007149631A3 LOW COMPLEXITY SOFT-INPUT VITERBI DECODING FOR DIGITAL COMMUNICATION SYSTEMS 审中-公开
公开(公告)号：WO2007149631A3
公开(公告)日：2007-12-27
申请号：PCT/US2007/067743
申请日：2007-04-30
申请人： NEWPORT MEDIA, INC.
发明人： MA, Jun , YOUSEF, Nabil
IPC分类号： H04J1/00
摘要： A DVB-H bit-interleave coded modulation/demodulation system and method includes a convolutional encoder; an interleaver operatively connected to the convolutional encoder; a quadrature amplitude modulation (QAM) mapper operatively connected to the interleaver; a channel component operatively connected to the QAM mapper; a QAM demapper operatively connected to the channel component; a de-interleaver operatively connected to the QAM demapper; and a Viterbi decoder operatively connected to the de-interleaver. Preferably, the interleaver comprises a bit-wise interleaver and a symbol-wise interleaver operatively connected to the bit-wise interleaver. Preferably, the de-interleaver comprises a bit-wise de-interleaver; and a symbol-wise de-interleaver operatively connected to the bit-wise de-interleaver. The de-interleaver may be adapted to decode a soft decision metric for any of a QPSK, 16QAM, and 64QAM modulation. The de-interleaver may be adapted to decode a soft decision metric computation comprising a log-likelihood ratio soft decision metric of a binary bit stream of a signal.

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