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1. 发明申请

US20050111522A1 Apparatus and method for generating preamble signal for cell identification in an orthogonal frequency division multiplexing system 有权
标题翻译：用于在正交频分复用系统中产生用于小区识别的前导信号的装置和方法
公开(公告)号：US20050111522A1
公开(公告)日：2005-05-26
申请号：US10991895
申请日：2004-11-18
申请人： Sang-Hoon Sung , Joong-Ho Jeong , Yun-Sang Park , Soon-Young Yoon , Tae-Gon Kim
发明人： Sang-Hoon Sung , Joong-Ho Jeong , Yun-Sang Park , Soon-Young Yoon , Tae-Gon Kim
IPC分类号： H04J11/00 , H04L27/26 , H04B1/69
CPC分类号： H04J11/0069 , H04J13/102 , H04L27/2613
摘要： Disclosed are an apparatus and a method for generating a preamble signal for cell identification in an OFDM mobile communication system. The method includes the steps of generating a Walsh code symbol for a cell identification by combining Walsh codewords having a predetermined length and generating the preamble signal through multiplying the Walsh code symbol by a pseudo noise (PN) code having a length identical to a length of the Walsh code symbol.
摘要翻译：公开了一种用于在OFDM移动通信系统中生成用于小区识别的前导码信号的装置和方法。该方法包括以下步骤：通过组合具有预定长度的沃尔什码字并产生前导码信号，通过将沃尔什码符号乘以具有与长度相同的长度的伪噪声（PN）码的伪噪声（PN）码来产生用于小区识别的沃尔什码符号沃尔什码符号。

2. 发明授权

US07580400B2 Apparatus and method for generating preamble signal for cell identification in an orthogonal frequency division multiplexing system 有权
标题翻译：用于在正交频分复用系统中产生用于小区识别的前导信号的装置和方法
公开(公告)号：US07580400B2
公开(公告)日：2009-08-25
申请号：US10991895
申请日：2004-11-18
申请人： Sang-Hoon Sung , Joong-Ho Jeong , Yun-Sang Park , Soon-Young Yoon , Tae-Gon Kim
发明人： Sang-Hoon Sung , Joong-Ho Jeong , Yun-Sang Park , Soon-Young Yoon , Tae-Gon Kim
IPC分类号： H04B7/216 , H04J11/00
CPC分类号： H04J11/0069 , H04J13/102 , H04L27/2613
摘要： Disclosed are an apparatus and a method for generating a preamble signal for cell identification in an OFDM mobile communication system. The method includes the steps of generating a Walsh code symbol for a cell identification by combining Walsh codewords having a predetermined length and generating the preamble signal through multiplying the Walsh code symbol by a pseudo noise (PN) code having a length identical to a length of the Walsh code symbol.
摘要翻译：公开了一种用于在OFDM移动通信系统中生成用于小区识别的前导码信号的装置和方法。该方法包括以下步骤：通过组合具有预定长度的沃尔什码字并产生前导码信号，通过将沃尔什码符号乘以具有与长度相同的长度的伪噪声（PN）码的伪噪声（PN）码来产生用于小区识别的沃尔什码符号沃尔什码符号。

3. 发明授权

US07711386B2 Apparatus and method for selective power control for an OFDM mobile communication system 有权
标题翻译：一种用于OFDM移动通信系统的选择性功率控制的装置和方法
公开(公告)号：US07711386B2
公开(公告)日：2010-05-04
申请号：US10993274
申请日：2004-11-19
申请人： Sang-Hoon Sung , Joong-Ho Jeong , Yun-Sang Park , Soon-Young Yoon , Jae-Hwan Chang
发明人： Sang-Hoon Sung , Joong-Ho Jeong , Yun-Sang Park , Soon-Young Yoon , Jae-Hwan Chang
IPC分类号： H04B7/00
CPC分类号： H04W52/24 , H04L5/023 , H04L27/2608
摘要： Disclosed is a method for controlling downlink power transmitted from a base station to subscriber stations in a mobile communication system employing an Orthogonal Frequency Division Multiple Access (OFDMA) scheme, in which data is carried from the base station to the subscriber stations by subchannels to each of which a plurality of subcarriers are assigned. The method includes the steps of receiving from the subscriber stations channel condition information of each of the subchannels together with information related to a subcarrier having a channel condition below a threshold from among at least one subcarrier included in each of the subchannels; calculating transmission power for each of the subchannels based on the received information; and transmitting each of the subchannels with the calculated transmission power, excluding the subcarrier having a channel condition below the threshold.
摘要翻译：公开了一种在使用正交频分多址（OFDMA）方式的移动通信系统中控制从基站向用户台发送的下行链路功率的方法，其中通过子信道将数据从基站传送到用户站其中分配了多个子载波。该方法包括以下步骤：从包括在每个子信道中的至少一个子载波中，从用户台接收每个子信道的信道条件信息以及与具有低于阈值的信道条件的子载波相关的信息; 基于所接收的信息计算每个子信道的传输功率; 以及除了具有低于阈值的信道条件的子载波之外，以计算的发送功率发送每个子信道。

4. 发明申请

US20050105589A1 Apparatus and method for selective power control for an OFDM mobile communication system 有权
标题翻译：一种用于OFDM移动通信系统的选择性功率控制的装置和方法
公开(公告)号：US20050105589A1
公开(公告)日：2005-05-19
申请号：US10993274
申请日：2004-11-19
申请人： Sang-Hoon Sung , Joong-Ho Jeong , Yun-Sang Park , Soon-Young Yoon , Jae-Hwan Chang
发明人： Sang-Hoon Sung , Joong-Ho Jeong , Yun-Sang Park , Soon-Young Yoon , Jae-Hwan Chang
IPC分类号： H04J11/00 , H04B1/69 , H04B7/005 , H04L5/02 , H04L27/26
CPC分类号： H04W52/24 , H04L5/023 , H04L27/2608
摘要： Disclosed is a method for controlling downlink power transmitted from a base station to subscriber stations in a mobile communication system employing an Orthogonal Frequency Division Multiple Access (OFDMA) scheme, in which data is carried from the base station to the subscriber stations by subchannels to each of which a plurality of subcarriers are assigned. The method includes the steps of receiving from the subscriber stations channel condition information of each of the subchannels together with information related to a subcarrier having a channel condition below a threshold from among at least one subcarrier included in each of the subchannels; calculating transmission power for each of the subchannels based on the received information; and transmitting each of the subchannels with the calculated transmission power, excluding the subcarrier having a channel condition below the threshold.
摘要翻译：公开了一种在使用正交频分多址（OFDMA）方式的移动通信系统中控制从基站向用户台发送的下行链路功率的方法，其中通过子信道从基站向用户台向每个其中分配了多个子载波。该方法包括以下步骤：从包括在每个子信道中的至少一个子载波中，从用户台接收每个子信道的信道条件信息以及与具有低于阈值的信道条件的子载波相关的信息; 基于所接收的信息计算每个子信道的传输功率; 以及除了具有低于阈值的信道条件的子载波之外，以计算的发送功率发送每个子信道。

5. 发明授权

US07634014B2 Adaptive pilot allocation method and apparatus for use in a communication system 有权
标题翻译：用于通信系统的自适应导频分配方法和装置
公开(公告)号：US07634014B2
公开(公告)日：2009-12-15
申请号：US11325125
申请日：2006-01-04
申请人： Min-Cheol Park , Yun-Sang Park , Bong-Gee Song , Tae-Gon Kim
发明人： Min-Cheol Park , Yun-Sang Park , Bong-Gee Song , Tae-Gon Kim
IPC分类号： H04K1/10
CPC分类号： H04L5/0048 , H04L25/0224
摘要： A method and apparatus are provided for adaptively allocating pilots in a pilot-aided channel estimation system. A multipath delay is measured between a base station (BS) and a mobile station (MS). A distribution density of pilots of a signal to be transmitted between the BS and the MS is controlled. When the multipath delay is large, the pilot distribution density is relatively raised. However, when the multipath delay is small, the pilot distribution density is relatively lowered. The pilot distribution density is adaptively controlled according to the multipath delay, such that resources are effectively utilized and throughput is improved.
摘要翻译：提供了一种用于在导频辅助信道估计系统中自适应地分配导频的方法和装置。在基站（BS）和移动台（MS）之间测量多径延迟。控制BS和MS之间要发送的信号的导频的分布密度。当多径延迟大时，导频分布密度相对提高。然而，当多径延迟小时，导频分布密度相对降低。根据多径延迟自适应地控制导频分布密度，有效利用资源，提高吞吐量。

6. 发明授权

US07623582B2 Apparatus and method for estimating start of frame 有权
标题翻译：用于估计帧起始的装置和方法
公开(公告)号：US07623582B2
公开(公告)日：2009-11-24
申请号：US11288707
申请日：2005-11-29
申请人： In-Hyoung Kim , Tae-Gon Kim , Yun-Sang Park , Bong-Gee Song
发明人： In-Hyoung Kim , Tae-Gon Kim , Yun-Sang Park , Bong-Gee Song
IPC分类号： H04L27/28
CPC分类号： H04L27/2656 , H04L27/2678
摘要： Disclosed is an apparatus and method for estimating a start point of a frame in a wireless communication system. The method includes the steps of receiving a frame and estimating the start of the frame by searching for an interval or point of time during or at which a correlation between preambles is at its maximum. At this time, to in order to estimate the start of the frame, a cyclic prefix is used. Thus, a correlation between a cyclic prefix and the last interval of a symbol, which is the same as the cyclic prefix, is calculated and an interval or point of time having the maximum correlation is estimated as the start point of the cyclic prefix. Therefore, the start point of the frame can be accurately estimated based on the start point of the cyclic prefix.
摘要翻译：公开了一种用于估计无线通信系统中的帧起始点的装置和方法。该方法包括以下步骤：通过搜索前导码之间的相关性处于其最大值的时间间隔或时间点来接收帧并估计帧的开始。此时，为了估计帧的开始，使用循环前缀。因此，计算与循环前缀相同的循环前缀和符号的最后间隔之间的相关性，并且将具有最大相关性的间隔或时间点估计为循环前缀的开始点。因此，可以基于循环前缀的开始点来准确地估计帧的起始点。

7. 发明申请

US20070009056A1 Method and apparatus for transmitting a signal in a communication system 有权
标题翻译：用于在通信系统中发送信号的方法和装置
公开(公告)号：US20070009056A1
公开(公告)日：2007-01-11
申请号：US11481032
申请日：2006-07-05
申请人： Hae-Dong Yeon , Young-Hak Kim , Jae-Hwan Chang , Jae-Yong Lee , Min-Cheol Park , Ji-Yun Seol , Tae-Gon Kim , Jun-Kyu Kang , In-Hyoung Kim , Yun-Sang Park , Bong-Gee Song
发明人： Hae-Dong Yeon , Young-Hak Kim , Jae-Hwan Chang , Jae-Yong Lee , Min-Cheol Park , Ji-Yun Seol , Tae-Gon Kim , Jun-Kyu Kang , In-Hyoung Kim , Yun-Sang Park , Bong-Gee Song
IPC分类号： H04K1/10
CPC分类号： H04L27/2607 , H04L5/023 , H04L27/2634
摘要： A method and apparatus for processing time windowing to transmit a signal in a Broadband Wireless Access (BWA) communication system based on Orthogonal Frequency Division Multiple Access (OFDMA). A signal of a first interval included in a previous symbol prior to a current symbol is stored as a signal of a previous symbol interval. The current symbol includes a guard interval and an effective symbol interval subsequent to the guard interval. The current symbol is windowed by overlapping the stored signal of the first interval with a signal of a second interval included in the current symbol subsequent to the previous symbol. A windowed signal is transmitted.
摘要翻译：一种用于在基于正交频分多址（OFDMA）的宽带无线接入（BWA）通信系统中处理时间窗口以发送信号的方法和装置。包括在当前符号之前的先前符号中的第一间隔的信号被存储为先前符号间隔的信号。当前符号包括保护间隔和保护间隔之后的有效符号间隔。通过将所存储的第一间隔的信号与包含在先前符号之后的当前符号中的第二间隔的信号相叠加来将当前符号加窗。发送窗口信号。

8. 发明申请

US20070211832A1 Apparatus and method for channel estimation for data demodulation in broadband wireless access system 有权
标题翻译：宽带无线接入系统中数据解调的信道估计装置及方法
公开(公告)号：US20070211832A1
公开(公告)日：2007-09-13
申请号：US11710852
申请日：2007-02-26
申请人： Seo-Goo Lee , Tae-Gon Kim , Min-Cheol Park , Yun-Sang Park , Bong-Gee Song , In-Hyoung Kim
发明人： Seo-Goo Lee , Tae-Gon Kim , Min-Cheol Park , Yun-Sang Park , Bong-Gee Song , In-Hyoung Kim
IPC分类号： H04L27/06 , H03D1/00
CPC分类号： H04L25/023
摘要： Provided is a channel estimation apparatus and method. In the channel estimation apparatus, a channel estimator performs channel estimation onto a received symbol and output a channel estimation result. The channel estimation result is stored in an estimation buffer along with a channel estimation result compensated in a preamble phase compensator. The preamble phase compensator receives a channel estimation result for pilot subcarriers of a data symbol and a preamble channel estimation result from the estimation buffer, acquires a phase rotation value between them, and compensates the preamble channel estimation result with the phase rotation value. When FCH and DL-MAP are demodulated, pilot subcarriers in the Nth PUSC symbol have been used to estimate the channel of the Nth PUSC symbol.
摘要翻译：提供了一种信道估计装置和方法。在信道估计装置中，信道估计器对所接收的符号进行信道估计并输出信道估计结果。信道估计结果与在前置码相位补偿器中补偿的信道估计结果一起存储在估计缓冲器中。前导码相位补偿器从估计缓冲器接收数据符号的导频子载波的信道估计结果和前导信道估计结果，获取相位旋转值，并以相位旋转值补偿前导信道估计结果。当FCH和DL-MAP被解调时，第N个PUSC符号中的导频子载波已被用于估计第N个PUSC符号的信道。

9. 发明授权

US07801252B2 Apparatus and method for channel estimation for data demodulation in broadband wireless access system 有权
标题翻译：宽带无线接入系统中数据解调的信道估计装置及方法
公开(公告)号：US07801252B2
公开(公告)日：2010-09-21
申请号：US11710852
申请日：2007-02-26
申请人： Seo-Goo Lee , Tae-Gon Kim , Min-Cheol Park , Yun-Sang Park , Bong-Gee Song , In-Hyoung Kim
发明人： Seo-Goo Lee , Tae-Gon Kim , Min-Cheol Park , Yun-Sang Park , Bong-Gee Song , In-Hyoung Kim
IPC分类号： H03D1/00 , H04L27/06
CPC分类号： H04L25/023
摘要： Provided is a channel estimation apparatus and method. In the channel estimation apparatus, a channel estimator performs channel estimation onto a received symbol and output a channel estimation result. The channel estimation result is stored in an estimation buffer along with a channel estimation result compensated in a preamble phase compensator. The preamble phase compensator receives a channel estimation result for pilot subcarriers of a data symbol and a preamble channel estimation result from the estimation buffer, acquires a phase rotation value between them, and compensates the preamble channel estimation result with the phase rotation value. When FCH and DL-MAP are demodulated, pilot subcarriers in the Nth PUSC symbol have been used to estimate the channel of the Nth PUSC symbol.
摘要翻译：提供了一种信道估计装置和方法。在信道估计装置中，信道估计器对所接收的符号进行信道估计并输出信道估计结果。信道估计结果与在前置码相位补偿器中补偿的信道估计结果一起存储在估计缓冲器中。前导码相位补偿器从估计缓冲器接收数据符号的导频子载波的信道估计结果和前导信道估计结果，获取相位旋转值，并以相位旋转值补偿前导信道估计结果。当FCH和DL-MAP被解调时，第N PUSC符号中的导频子载波已被用于估计第N个PUSC符号的信道。

10. 发明授权

US07746940B2 Method and apparatus for transmitting a signal in a communication system 有权
标题翻译：用于在通信系统中发送信号的方法和装置
公开(公告)号：US07746940B2
公开(公告)日：2010-06-29
申请号：US11481032
申请日：2006-07-05
申请人： Hae-Dong Yeon , Young-Hak Kim , Jae-Hwan Chang , Jae-Yong Lee , Min-Cheol Park , Ji-Yun Seol , Tae-Gon Kim , Jun-Kyu Kang , In-Hyoung Kim , Yun-Sang Park , Bong-Gee Song
发明人： Hae-Dong Yeon , Young-Hak Kim , Jae-Hwan Chang , Jae-Yong Lee , Min-Cheol Park , Ji-Yun Seol , Tae-Gon Kim , Jun-Kyu Kang , In-Hyoung Kim , Yun-Sang Park , Bong-Gee Song
IPC分类号： H04K1/10 , H04L27/28
CPC分类号： H04L27/2607 , H04L5/023 , H04L27/2634
摘要： A method and apparatus for processing time windowing to transmit a signal in a Broadband Wireless Access (BWA) communication system based on Orthogonal Frequency Division Multiple Access (OFDMA). A signal of a first interval included in a previous symbol prior to a current symbol is stored as a signal of a previous symbol interval. The current symbol includes a guard interval and an effective symbol interval subsequent to the guard interval. The current symbol is windowed by overlapping the stored signal of the first interval with a signal of a second interval included in the current symbol subsequent to the previous symbol. A windowed signal is transmitted.
摘要翻译：一种用于在基于正交频分多址（OFDMA）的宽带无线接入（BWA）通信系统中处理时间窗口以发送信号的方法和装置。包括在当前符号之前的先前符号中的第一间隔的信号被存储为先前符号间隔的信号。当前符号包括保护间隔和保护间隔之后的有效符号间隔。通过将所存储的第一间隔的信号与包含在先前符号之后的当前符号中的第二间隔的信号相叠加来将当前符号加窗。发送窗口信号。

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