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1.发明授权公开(公告)号：US08139673B2
公开(公告)日：2012-03-20
申请号：US12139658
申请日：2008-06-16
CPC分类号： H04L25/03866 , H04L5/0007 , H04L5/0039 , H04L5/0048 , H04L25/0216 , H04L25/0222 , H04L25/0228 , H04L27/2602 , H04L27/2626
摘要： A transmission method of a wireless signal including the following steps is provided. Multiple orthogonal frequency division multiplexing (OFDM) symbols carried by multiple subcarriers are generated according to a data signal. A scrambling pattern including multiple scrambling symbols is generated, wherein the scrambling symbols respectively correspond to the subcarriers in the frequency domain. The scrambling symbols corresponding to two contiguous subcarriers are correlated. The scrambling symbols are utilized to encode the OFDM symbols carried by the corresponding subcarriers.
摘要翻译： 提供了包括以下步骤的无线信号的发送方法。 根据数据信号生成由多个子载波承载的多个正交频分复用（OFDM）符号。 产生包括多个加扰符号的加扰模式，其中加扰符号分别对应于频域中的子载波。 对应于两个相邻子载波的加扰符号相关。 扰码符号用于对由相应子载波承载的OFDM符号进行编码。
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公开(公告)号：US20090257515A1
公开(公告)日：2009-10-15
申请号：US12139658
申请日：2008-06-16
IPC分类号： H04L27/28
CPC分类号： H04L25/03866 , H04L5/0007 , H04L5/0039 , H04L5/0048 , H04L25/0216 , H04L25/0222 , H04L25/0228 , H04L27/2602 , H04L27/2626
摘要： A transmission method of a wireless signal including the following steps is provided. Multiple orthogonal frequency division multiplexing (OFDM) symbols carried by multiple subcarriers are generated according to a data signal. A scrambling pattern including multiple scrambling symbols is generated, wherein the scrambling symbols respectively correspond to the subcarriers in the frequency domain. The scrambling symbols corresponding to two contiguous subcarriers are correlated. The scrambling symbols are utilized to encode the OFDM symbols carried by the corresponding subcarriers.
摘要翻译： 提供了包括以下步骤的无线信号的发送方法。 根据数据信号生成由多个子载波承载的多个正交频分复用（OFDM）符号。 产生包括多个加扰符号的加扰模式，其中加扰符号分别对应于频域中的子载波。 对应于两个相邻子载波的加扰符号相关。 扰码符号用于对由相应子载波承载的OFDM符号进行编码。
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公开(公告)号：US08238507B2
公开(公告)日：2012-08-07
申请号：US12131930
申请日：2008-06-03
IPC分类号： H04L27/00
CPC分类号： H04L27/2614 , H04L27/26
摘要： This invention provides a transmission architecture of transmitter which includes a forestage module, a pilot insertion, a scramble selector, and a backstage module. A frequency domain data symbol is transmitted by the forestage module. A pilot signal is inserted in the frequency domain data symbol by the pilot insertion, and a frequency domain pilot symbol is produced. The frequency domain pilot symbol performed a scramble operation and a select operation with certain scramble patterns by the scramble selector, and a requirement symbol is produced. The requirement symbol is converted into the transmitted signal by the backstage module. Because the use of the scramble operation and the select operation from the scramble selector, the transmission architecture of transmitter provided by this invention can both reduce the PAPR and increase the multi-cell diversity gain in an OFDM single frequency network system.
摘要翻译： 本发明提供了一种发射机的传输体系结构，其包括森林模块，导频插入，加扰选择器和后台模块。 频域数据符号由林木模块发送。 导频信号通过导频插入插入到频域数据符号中，产生频域导频符号。 频域导频符号通过加扰选择器执行加扰操作和具有某些加扰模式的选择操作，并且产生要求符号。 后台模块将需求符号转换为发送信号。 由于使用加扰操作和来自加扰选择器的选择操作，本发明提供的发射机的传输体系结构既可减少PAPR，又能增加OFDM单频网络系统中的多小区分集增益。
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4.发明授权公开(公告)号：US07720183B2
公开(公告)日：2010-05-18
申请号：US11646771
申请日：2006-12-28
IPC分类号： H03D1/04
CPC分类号： H04L27/2647 , H04L5/0007 , H04L25/03159
摘要： A method for ICI self-cancellation and ICI reconstruction and cancellation is introduced. The method includes receiving input signals; receiving boundary information regarding a length q of an ISI-free region of the received signals; selecting a plurality of ISI-free signals from the received signals; combining the plurality of ISI-free signals to provide combined signals z(n); performing FFT operations on the combined signals to provide output signals Z(k); reconstructing ICI based on the output signals Z(k) and the length q of the ISI-free region of the input signals r(n) in order to provide an estimated ICI; subtracting the estimated ICI from the output signals Z(k) to provide a cancelled signal W(k); performing a channel estimation for the cancelled signal W(k); equalizing the cancelled signal W(k) to provide an equalized signal; and de-mapping the equalized signal to provide a de-mapped signal d(k).
摘要翻译： 介绍了ICI自消除和ICI重建和取消的方法。 该方法包括接收输入信号; 接收关于接收信号的无ISI区域的长度q的边界信息; 从所接收的信号中选择多个无ISI信号; 组合多个无ISI信号以提供组合信号z（n）; 对组合信号进行FFT运算以提供输出信号Z（k）; 基于输入信号r（n）的输出信号Z（k）和ISI自由区域的长度q来重建ICI，以便提供估计的ICI; 从输出信号Z（k）减去估计的ICI以提供消除信号W（k）; 对取消信号W（k）进行信道估计; 均衡消除信号W（k）以提供均衡信号; 并解映射均衡信号以提供去映射信号d（k）。
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公开(公告)号：US20090225895A1
公开(公告)日：2009-09-10
申请号：US12131930
申请日：2008-06-03
IPC分类号： H04L27/00
CPC分类号： H04L27/2614 , H04L27/26
摘要： This invention provides a transmission architecture of transmitter which includes a forestage module, a pilot insertion, a scramble selector, and a backstage module. A frequency domain data symbol is transmitted by the forestage module. A pilot signal is inserted in the frequency domain data symbol by the pilot insertion, and a frequency domain pilot symbol is produced. The frequency domain pilot symbol performed a scramble operation and a select operation with certain scramble patterns by the scramble selector, and a requirement symbol is produced. The requirement symbol is converted into the transmitted signal by the backstage module. Because the use of the scramble operation and the select operation from the scramble selector, the transmission architecture of transmitter provided by this invention can both reduce the PAPR and increase the multi-cell diversity gain in an OFDM single frequency network system.
摘要翻译： 本发明提供了一种发射机的传输体系结构，其包括森林模块，导频插入，加扰选择器和后台模块。 频域数据符号由林木模块发送。 导频信号通过导频插入插入到频域数据符号中，产生频域导频符号。 频域导频符号通过加扰选择器执行加扰操作和具有某些加扰模式的选择操作，并且产生要求符号。 后台模块将需求符号转换为发送信号。 由于使用加扰操作和来自加扰选择器的选择操作，本发明提供的发射机的传输体系结构既可减少PAPR，又能增加OFDM单频网络系统中的多小区分集增益。
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6.发明申请公开(公告)号：US20080159420A1
公开(公告)日：2008-07-03
申请号：US11646771
申请日：2006-12-28
IPC分类号： H04L27/28
CPC分类号： H04L27/2647 , H04L5/0007 , H04L25/03159
摘要： A method for ICI self-cancellation and ICI reconstruction and cancellation is introduced. The method includes receiving input signals; receiving boundary information regarding a length q of an ISI-free region of the received signals; selecting a plurality of ISI-free signals from the received signals; combining the plurality of ISI-free signals to provide combined signals z(n); performing FFT operations on the combined signals to provide output signals Z(k); reconstructing ICI based on the output signals Z(k) and the length q of the ISI-free region of the input signals r(n) in order to provide an estimated ICI; subtracting the estimated ICI from the output signals Z(k) to provide a cancelled signal W(k); performing a channel estimation for the cancelled signal W(k); equalizing the cancelled signal W(k) to provide an equalized signal; and de-mapping the equalized signal to provide a de-mapped signal d(k).
摘要翻译： 介绍了ICI自消除和ICI重建和取消的方法。 该方法包括接收输入信号; 接收关于接收信号的无ISI区域的长度q的边界信息; 从所接收的信号中选择多个无ISI信号; 组合多个无ISI信号以提供组合信号z（n）; 对组合信号进行FFT运算以提供输出信号Z（k）; 基于输入信号r（n）的输出信号Z（k）和ISI自由区域的长度q来重建ICI，以便提供估计的ICI; 从输出信号Z（k）减去估计的ICI以提供消除信号W（k）; 对取消信号W（k）进行信道估计; 均衡消除信号W（k）以提供均衡信号; 并解映射均衡信号以提供去映射信号d（k）。
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公开(公告)号：US20110150153A1
公开(公告)日：2011-06-23
申请号：US12645670
申请日：2009-12-23
申请人： Jia-Wei Liu , Chorng-Ren Sheu , Ming-Chien Tseng
发明人： Jia-Wei Liu , Chorng-Ren Sheu , Ming-Chien Tseng
IPC分类号： H04B1/10
CPC分类号： H04L25/03159 , H04L25/03821 , H04L27/2607 , H04L27/265 , H04L2025/03605
摘要： A method for inter-carrier interference cancellation is provided. A time-domain received signal is detected to obtain information of an inter-symbol interference free region. Multiple cyclic useful symbols are obtained from the time-domain received signal according to the information of the inter-symbol interference free region and a set of multi-step windowing coefficients is generated. Adjusted cyclic useful symbols are obtained by multiplying the cyclic useful symbols by the set of multi-step windowing coefficients, respectively, and then combined in a time domain to obtain a time-domain combination signal. The inter-carrier interference of each of sub-carriers of the time-domain combination signal is centralized on neighboring D sub-carriers. The time-domain combination signal is transformed into a frequency-domain received signal. The frequency-domain received signal and its corresponding channel response matrix are divided into overlapped signal blocks according to D. Successive inter-carrier interference cancellation is performed on each signal block in parallel to obtain estimation data.
摘要翻译： 提供了一种用于载波间干扰消除的方法。 检测时域接收信号以获得符号间无干扰区域的信息。 根据符号间无干扰区域的信息，从时域接收信号获得多个循环有用符号，并且生成一组多步骤窗口系数。 通过将循环有用符号分别乘以多步开窗系数的集合来获得经调整的循环有用符号，然后在时域中组合以获得时域组合信号。 时域组合信号的每个子载波的载波间干扰集中在相邻的D个子载波上。 时域组合信号被变换成频域接收信号。 频域接收信号及其对应的信道响应矩阵根据D被划分为重叠的信号块。并行地对每个信号块执行连续的载波间干扰消除以获得估计数据。
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公开(公告)号：US08254510B2
公开(公告)日：2012-08-28
申请号：US12645670
申请日：2009-12-23
申请人： Jia-Wei Liu , Chorng-Ren Sheu , Ming-Chien Tseng
发明人： Jia-Wei Liu , Chorng-Ren Sheu , Ming-Chien Tseng
CPC分类号： H04L25/03159 , H04L25/03821 , H04L27/2607 , H04L27/265 , H04L2025/03605
摘要： A method for inter-carrier interference cancellation is provided. A time-domain received signal is detected to obtain information of an inter-symbol interference free region. Multiple cyclic useful symbols are obtained from the time-domain received signal according to the information of the inter-symbol interference free region and a set of multi-step windowing coefficients is generated. Adjusted cyclic useful symbols are obtained by multiplying the cyclic useful symbols by the set of multi-step windowing coefficients, respectively, and then combined in a time domain to obtain a time-domain combination signal. The inter-carrier interference of each of sub-carriers of the time-domain combination signal is centralized on neighboring D sub-carriers. The time-domain combination signal is transformed into a frequency-domain received signal. The frequency-domain received signal and its corresponding channel response matrix are divided into overlapped signal blocks according to D. Successive inter-carrier interference cancellation is performed on each signal block in parallel to obtain estimation data.
摘要翻译： 提供了一种用于载波间干扰消除的方法。 检测时域接收信号以获得符号间无干扰区域的信息。 根据符号间无干扰区域的信息，从时域接收信号获得多个循环有用符号，并且生成一组多步骤窗口系数。 通过将循环有用符号分别乘以多步开窗系数的集合来获得经调整的循环有用符号，然后在时域中组合以获得时域组合信号。 时域组合信号的每个子载波的载波间干扰集中在相邻的D个子载波上。 时域组合信号被变换成频域接收信号。 频域接收信号及其对应的信道响应矩阵根据D被划分为重叠的信号块。并行地对每个信号块执行连续的载波间干扰消除以获得估计数据。
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公开(公告)号：US07773683B2
公开(公告)日：2010-08-10
申请号：US11849192
申请日：2007-08-31
申请人： Ming-Chien Tseng , Kun-Yi Lin , Chorng-Ren Sheu
发明人： Ming-Chien Tseng , Kun-Yi Lin , Chorng-Ren Sheu
IPC分类号： H04K1/10
CPC分类号： H04L27/2647 , H04L25/03821 , H04L27/2607
摘要： An apparatus capable of inter-carrier interference (ICI) cancellation in a communication system, the apparatus comprising a detecting module configured to detect an ISI-free region free from inter-symbol interference (ISI) in a guard interval (GI) of a symbol in time domain, a windowing module configured to provide a windowing function in time domain, identifying a weight value in the windowing function based on the ISI-free region, and multiplying a channel response related to the symbol by the windowing function in time domain to obtain a windowing result, wherein the windowing result comprises a first portion corresponding to the ISI-free region and a second region corresponding to an end portion of the symbol, the end portion and the ISI-free region having the same length, and a combination module configured to combine the first portion and the second portion of the windowing result in time domain.
摘要翻译： 一种在通信系统中能够进行载波间干扰（ICI）消除的装置，该装置包括检测模块，该检测模块被配置为在符号的保护间隔（GI）中检测到没有符号间干扰（ISI）的无ISI的区域 在时域中，窗口模块被配置为在时域中提供加窗函数，基于无ISI区域识别加窗函数中的加权值，并将与该符号相关的信道响应与时域中的加窗函数相乘， 获得开窗结果，其中窗口结果包括对应于不含ISI的区域的第一部分和对应于符号的端部，具有相同长度的端部部分和无ISI区域的第二区域，以及组合 模块被配置为在时域中组合加窗结果的第一部分和第二部分。
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公开(公告)号：US08243862B2
公开(公告)日：2012-08-14
申请号：US13029587
申请日：2011-02-17
申请人： Jia-Wei Liu , Chorng-Ren Sheu , Chuan-Yuan Huang
发明人： Jia-Wei Liu , Chorng-Ren Sheu , Chuan-Yuan Huang
CPC分类号： H04L5/0023 , H04L1/0631 , H04L1/0643 , H04L25/03159 , H04L25/03821 , H04L2025/03414
摘要： A signal receiving method of a receiver includes following steps. Multiple time-domain received signals are transformed into multiple frequency-domain received signals, and channel response matrices corresponding to the frequency-domain received signals are estimated. The frequency-domain received signals are STBC decoded and multiple original combination signals are obtained based on the corresponding channel response matrices. The frequency-domain received signals are rearranged, and the rearranged frequency-domain received signals are STBC decoded and multiple rearrangement combination signals are obtained based on the corresponding channel response matrices. The original combination signals and the rearrangement combination signals are randomly chosen and summed to obtain multiple complex signals. The complex signal with minimum interference power is selected and then the selected signal is used to cancel interference and compensate the channel effect to obtain the detected data.
摘要翻译： 接收机的信号接收方法包括以下步骤。 多个时域接收信号被变换成多个频域接收信号，估计与频域接收信号对应的信道响应矩阵。 频域接收信号被STBC解码，并且基于相应的信道响应矩阵获得多个原始组合信号。 频域接收信号被重新排列，重新排列的频域接收信号被STBC解码，并且基于相应的信道响应矩阵获得多个重排组合信号。 原始组合信号和重排组合信号被随机选择并相加以获得多个复信号。 选择具有最小干扰功率的复信号，然后选择的信号用于消除干扰并补偿信道效应以获得检测到的数据。
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