-
公开(公告)号：US08072958B2
公开(公告)日：2011-12-06
申请号：US12290755
申请日：2008-11-03
CPC分类号： H04L5/005 , H04B1/707 , H04B7/2628 , H04B2201/70701 , H04L1/0041 , H04L1/0063 , H04L1/0065 , H04L1/0066 , H04L1/0071 , H04L5/0048 , H04L27/183 , H04L27/2657 , H04L27/2662
摘要： A technique for encoding digital communication signals. Data symbols are augmented in pilot symbols inserted at predetermined positions. The pilot augmented sequence is then fed to a deterministic error correction block encoder, such as a turbo product coder, to output a coded sequence. The symbols in the error correction encoded sequence are then rearranged to ensure that the output symbols derived from input pilot symbols are located at regular, predetermined positions. As a result, channel encoding schemes can more easily be used which benefits from power of two length block sizes.
摘要翻译： 一种用于编码数字通信信号的技术。 数据符号在插入预定位置的导频符号中增加。 导频增强序列然后被馈送到诸如turbo乘积编码器的确定性纠错块编码器，以输出编码序列。 然后重新排列纠错编码序列中的符号，以确保从输入导频符号导出的输出符号位于规则的预定位置。 结果，可以更容易地使用信道编码方案，其受益于两个长度块大小的功率。
-
公开(公告)号：US20090135950A1
公开(公告)日：2009-05-28
申请号：US12326487
申请日：2008-12-02
申请人： John E. Hoffmann , George Rodney Nelson, Jr. , Daniel I. Riley , Antoine J. Rouphael , James A. Proctor, Jr.
发明人： John E. Hoffmann , George Rodney Nelson, Jr. , Daniel I. Riley , Antoine J. Rouphael , James A. Proctor, Jr.
IPC分类号： H04L27/36
CPC分类号： H04L1/0048 , G11B20/1833 , H03M13/35 , H04B1/707 , H04J13/00 , H04L1/0003 , H04L1/0007 , H04L1/0009 , H04L1/0025 , H04L1/1809 , H04L1/1816 , H04L25/14 , H04L27/22 , H04L27/38 , H04L2001/0093 , H04L2001/0096
摘要： The present invention provides for making code rate adjustments and modulation type adjustments in a pseudonoise (PN) encoded CDMA system. Coding rate adjustments may be made by changing the number of information bits per symbol, or Forward Error Code (FEC) coding rate. A forward error correction (FEC) block size is maintained at a constant amount. Therefore, as the number of information bits per symbol are increased, an integer multiple of bits per epoch is always maintained. The scheme permits for a greater flexibility and selection of effective data rates providing information bit rates ranging from, for example, approximately 50 kilobits per second to over 5 mega bits per second (Mbps) in one preferred embodiment.
摘要翻译： 本发明提供了在伪噪声（PN）编码的CDMA系统中进行码率调整和调制类型调整。 可以通过改变每个符号的信息比特数或转发错误码（FEC）编码率来进行编码速率调整。 前向纠错（FEC）块大小保持恒定的量。 因此，随着每个符号的信息位的数量增加，始终保持每个时期的位的整数倍。 在一个优选实施例中，该方案允许更大的灵活性和有效数据速率的选择，从而提供从例如大约50千比特每秒到超过5兆比特每秒（Mbps）的信息比特率。
-
13.发明授权公开(公告)号：US07092430B2
公开(公告)日：2006-08-15
申请号：US11178767
申请日：2005-07-11
IPC分类号： H04B1/707
CPC分类号： H04B1/7107 , H04B2201/70701
摘要： A system and method for encoding/decoding data channels in a CDMA system having data channel interference cancellation, wherein data channel interference cancellation is used to remove unwanted non-orthogonal pilot signal components which are present within a demodulated data signal. This is accomplished by regenerating interference terms with respect to the non-orthogonal pilot signal and subtracting them from the demodulated data signal.
-
公开(公告)号：US06904079B2
公开(公告)日：2005-06-07
申请号：US09766875
申请日：2001-01-19
CPC分类号： H04L5/0046 , H04B1/707 , H04B2201/70701 , H04L7/041
摘要： A technique for efficient implementation of pilot signals on a reverse link in a wireless communication system. An access channel is defined for the reverse link such that within each frame, or epoch, a portion is dedicated to sending only pilot symbols. Another portion of the frame is reserved for sending mostly data symbols; however, within this second portion of the frame, additional pilot symbols are interleaved among the data symbols. The pilot symbol or preamble portion of the access channel frame allows for efficient acquisition of the access signal at the base station, while providing a timing reference for determining the effects of multipath fading. In particular, a pilot correlation filter provides a phase estimate from the pilot symbols in the preamble portion, which is then used to decode the data symbols in the payload portion. An access acquisition portion of the receiver uses the phase estimates provided by the pilot correlation filter to process the output of a data symbol correlation filter. The additional pilot symbols embedded in the payload portion are used in a cross product operation to further resolve the effects of multipath fading.
摘要翻译： 一种在无线通信系统中在反向链路上有效实现导频信号的技术。 为反向链路定义了一个接入信道，使得在每个帧或时期内，一部分专用于仅发送导频符号。 帧的另一部分保留用于主要发送数据符号; 然而，在帧的该第二部分内，在数据符号之间交织附加的导频符号。 访问信道帧的导频符号或前导码部分允许在基站处有效地获取接入信号，同时提供用于确定多径衰落的影响的定时参考。 具体地，导频相关滤波器从前导码部分中的导频符号提供相位估计，然后该导频符号用于解码有效载荷部分中的数据符号。 接收机的访问获取部分使用由导频相关滤波器提供的相位估计来处理数据符号相关滤波器的输出。 嵌入在有效载荷部分中的附加导频符号用于交叉乘积运算，以进一步解决多路径衰落的影响。
-
公开(公告)号：US06804223B2
公开(公告)日：2004-10-12
申请号：US09728575
申请日：2000-11-30
IPC分类号： H04J1300
CPC分类号： H04L5/005 , H04B1/707 , H04B7/2628 , H04B2201/70701 , H04L1/0041 , H04L1/0063 , H04L1/0065 , H04L1/0066 , H04L1/0071 , H04L5/0048 , H04L27/183 , H04L27/2657 , H04L27/2662
摘要： A technique for encoding digital communication signals. Data symbols are augmented in pilot symbols inserted at predetermined positions. The pilot augmented sequence is then fed to a deterministic error correction block encoder, such as a turbo product coder, to output a coded sequence. The symbols in the error correction encoded sequence are then rearranged to ensure that the output symbols derived from input pilot symbols are located at regular, predetermined positions. As a result, channel encoding schemes can more easily be used which benefits from power of two length block sizes.
-
公开(公告)号：US07447187B2
公开(公告)日：2008-11-04
申请号：US10874101
申请日：2004-06-22
IPC分类号： H04J13/00
CPC分类号： H04L5/005 , H04B1/707 , H04B7/2628 , H04B2201/70701 , H04L1/0041 , H04L1/0063 , H04L1/0065 , H04L1/0066 , H04L1/0071 , H04L5/0048 , H04L27/183 , H04L27/2657 , H04L27/2662
摘要： A technique for encoding digital communication signals. Data symbols are augmented in pilot symbols inserted at predetermined positions. The pilot augmented sequence is then fed to a deterministic error correction block encoder, such as a turbo product coder, to output a coded sequence. The symbols in the error correction encoded sequence are then rearranged to ensure that the output symbols derived from input pilot symbols are located at regular, predetermined positions. As a result, channel encoding schemes can more easily be used which benefits from power of two length block sizes.
摘要翻译： 一种用于编码数字通信信号的技术。 数据符号在插入预定位置的导频符号中增加。 导频增强序列然后被馈送到诸如turbo乘积编码器的确定性纠错块编码器，以输出编码序列。 然后重新排列纠错编码序列中的符号，以确保从输入导频符号导出的输出符号位于规则的预定位置。 结果，可以更容易地使用信道编码方案，其受益于两个长度块大小的功率。
-
17.发明授权Method for using a non-orthogonal pilot signal with data channel interference cancellation 有权使用具有数据信道干扰消除的非正交导频信号的方法公开(公告)号：US07428263B2
公开(公告)日：2008-09-23
申请号：US11475447
申请日：2006-06-27
IPC分类号： H04B1/707
CPC分类号： H04B1/7107 , H04B2201/70701
摘要： A system and method for encoding/decoding data channels in a CDMA system having data channel interference cancellation, wherein data channel interference cancellation is used to remove unwanted non-orthogonal pilot signal components which are present within a demodulated data signal. This is accomplished by regenerating interference terms with respect to the non-orthogonal pilot signal and subtracting them from the demodulated data signal.
摘要翻译： 一种用于在具有数据信道干扰消除的CDMA系统中对数据信道进行编码/解码的系统和方法，其中数据信道干扰消除用于去除存在于解调数据信号内的不需要的非正交导频信号分量。 这是通过对非正交导频信号再生干扰项并从解调数据信号中减去它们来实现的。
-
18.发明授权Method for using a non-orthogonal pilot signal with data channel interference cancellation 有权使用具有数据信道干扰消除的非正交导频信号的方法公开(公告)号：US06917642B1
公开(公告)日：2005-07-12
申请号：US09772200
申请日：2001-01-29
IPC分类号： H04B1/707
CPC分类号： H04B1/7107 , H04B2201/70701
摘要： A system and method for encoding/decoding data channels in a CDMA system having data channel interference cancellation, wherein data channel interference cancellation is used to remove unwanted non-orthogonal pilot signal components which are present within a demodulated data signal. This is accomplished by regenerating interference terms with respect to the non-orthogonal pilot signal and subtracting them from the demodulated data signal.
摘要翻译： 一种用于在具有数据信道干扰消除的CDMA系统中对数据信道进行编码/解码的系统和方法，其中数据信道干扰消除用于去除存在于解调数据信号内的不需要的非正交导频信号分量。 这是通过对非正交导频信号再生干扰项并从解调数据信号中减去它们来实现的。
-
公开(公告)号：US08964909B2
公开(公告)日：2015-02-24
申请号：US13493575
申请日：2012-06-11
申请人： John E. Hoffman , George Rodney Nelson, Jr. , Daniel I. Riley , Antoine J. Rouphael , James A. Proctor, Jr.
发明人： John E. Hoffman , George Rodney Nelson, Jr. , Daniel I. Riley , Antoine J. Rouphael , James A. Proctor, Jr.
IPC分类号： H04L27/06 , H04L27/22 , H03M13/00 , G11B20/18 , H03M13/35 , H04B1/707 , H04J13/00 , H04L1/00 , H04L25/14 , H04L1/18
CPC分类号： H04L1/0048 , G11B20/1833 , H03M13/35 , H04B1/707 , H04J13/00 , H04L1/0003 , H04L1/0007 , H04L1/0009 , H04L1/0025 , H04L1/1809 , H04L1/1816 , H04L25/14 , H04L27/22 , H04L27/38 , H04L2001/0093 , H04L2001/0096
摘要： The present invention provides for making code rate adjustments and modulation type adjustments in a pseudonoise (PN) encoded CDMA system. Coding rate adjustments may be made by changing the number of information bits per symbol, or Forward Error Code (FEC) coding rate. A forward error correction (FEC) block size is maintained at a constant amount. Therefore, as the number of information bits per symbol are increased, an integer multiple of bits per epoch is always maintained. The scheme permits for a greater flexibility and selection of effective data rates providing information bit rates ranging from, for example, approximately 50 kilobits per second to over 5 mega bits per second (Mbps) in one preferred embodiment.
-
公开(公告)号：US08958457B2
公开(公告)日：2015-02-17
申请号：US12339969
申请日：2008-12-19
CPC分类号： H04L5/0046 , H04B1/707 , H04B2201/70701 , H04L7/041
摘要： Generating first pilot symbols and second pilot symbols is disclosed. A frame, to send in an uplink transmission, may have a first portion and a second portion. The first portion may include the first pilot symbols and data symbols. The second portion may include the second pilot symbols without data symbols.
摘要翻译： 公开了生成第一导频符号和第二导频符号。 在上行链路传输中发送的帧可以具有第一部分和第二部分。 第一部分可以包括第一导频符号和数据符号。 第二部分可以包括没有数据符号的第二导频符号。
-
-
-
-
-
-
-
-
-
搜索结果
183 条记录 (耗时 0.033 秒)
