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41. 发明公开

KR1020030095103A 다중 반송파 통신에서의 부호 할당/검색 장치와 그의 부호관리 시스템 및 그 방법 有权
标题翻译：多载波通信及其代码管理系统的代码分配/搜索设备及其方法
公开(公告)号：KR1020030095103A
公开(公告)日：2003-12-18
申请号：KR1020020032626
申请日：2002-06-11
申请人： 한국전자통신연구원
发明人： 강군석 , 최권휴 , 김수영 , 오덕길
IPC分类号： H04B14/00
CPC分类号： H04B14/002 , H04B1/707 , H04J13/18
摘要： PURPOSE: A code management method on multi carrier communication is provided to optimize codes for user codes and miniaturized symbol combinations only, thereby maintaining a minimal PAR(Peak-to-Average Ratio) and reducing complexity by calculating a PAR near to the minimal PAR. CONSTITUTION: A system initializes a user counter as 1(S1), initializes a reference PAR index value as a maximum value(S2), and initializes an orthogonal code counter(S3). The system checks whether an orthogonal code is pre-assigned(S4). If not, the system assigns the orthogonal code to a user, and calculates a temporary PAR index value(S5). The system compares the temporary PAR index value with the reference PAR index value(S6). If the reference PAR index value is bigger, the system resets the temporary PAR index value to the reference PAR index value(S7), and sets the orthogonal code to a temporary assignment code of the user(S8). The orthogonal code counter is increased by 1(S9). The system confirms whether all processes are completed(S10). If so, the system sets the temporary assignment code for the user counter, and increases the user counter by 1(S11,S12), then checks whether assignment codes for all users are set(S13). The orthogonal code assignment process is terminated(S14).
摘要翻译：目的：提供多载波通信的代码管理方法，以优化用户代码和小型化符号组合的代码，从而通过计算靠近最小PAR的PAR来保持最小的PAR（峰值平均比）并降低复杂性。构成：系统将用户计数器初始化为1（S1），将参考PAR索引值初始化为最大值（S2），并初始化正交码计数器（S3）。系统检查是否预分配正交码（S4）。如果不是，则系统将正交码分配给用户，并计算临时PAR索引值（S5）。系统将临时PAR指数值与参考PAR指数值进行比较（S6）。如果参考PAR索引值较大，则系统将临时PAR索引值重置为参考PAR索引值（S7），并将正交码设置为用户的临时分配代码（S8）。正交码计数器增加1（S9）。系统确认所有过程是否完成（S10）。如果是，则系统设置用户计数器的临时分配码，并将用户计数器增加1（S11，S12），然后检查是否设置了所有用户的分配码（S13）。正交码分配处理结束（S14）。

42. 发明公开

KR1020030039894A 부분전송열 직교 주파수분할다중화 시스템에서 부블럭신호의 위상계수 설정 방법 失效
标题翻译：在部分传输柱正交频分复用系统中设置子块信号的相位系数的方法
公开(公告)号：KR1020030039894A
公开(公告)日：2003-05-22
申请号：KR1020010071271
申请日：2001-11-16
申请人： 한국전자통신연구원
发明人： 강군석 , 최권휴 , 김수영 , 이호진
IPC分类号： H04L27/26
CPC分类号： H04L27/2621
摘要： PURPOSE: A method for setting the phase coefficient of a sub-block signal in a partial transmission column orthogonal frequency division multiplexing system is provided to reduce the complexity of the process to set the phase coefficient to reduce the ratio between the peak power to the average power by the sequential process of the phase value as well as to reduce the ratio between the peak power to the average power, effectively. CONSTITUTION: A method for setting the phase coefficient of a sub-block signal in a partial transmission column orthogonal frequency division multiplexing system includes the steps of: initializing(201,202) by setting all phase coefficients of the sub-block signals as the first phase value for the sub-block signal, calculating the peak power obtained by adding the sub-block signal set by the phase coefficient at step(201,202) and for setting(203) the calculated value as a reference peak power, setting(206) the phase values to minimize the peak power of the output signal to the phase coefficients of the each sub-block signal with applying(205) the following phase value as the phase coefficient of each sub-block signal and repeating the above 3 steps for the remained usable phase values.
摘要翻译：目的：提供一种在部分传输列正交频分复用系统中设置子块信号的相位系数的方法，以减少设置相位系数的过程的复杂性，以降低峰值功率与平均值之间的比值功率通过相位值的顺序处理以及有效降低峰值功率与平均功率之间的比例。构成：在部分传输列正交频分复用系统中设置子块信号的相位系数的方法包括以下步骤：通过将子块信号的所有相位系数设置为第一相位值来初始化（201,202）对于子块信号，计算通过在步骤（201,202）添加由相位系数设置的子块信号而获得的峰值功率，并将计算出的值设置为（203）作为参考峰值功率，设置（206）相位值，以通过施加（205）后续相位值作为每个子块信号的相位系数，将输出信号的峰值功率最小化为每个子块信号的相位系数，并重复上述3个步骤以保留可用相位值。

43. 发明授权

KR100441989B1 부분전송열 직교 주파수분할다중화 시스템에서 부블럭신호의 위상계수 설정 방법 失效
标题翻译：在这种情况下，
公开(公告)号：KR100441989B1
公开(公告)日：2004-07-30
申请号：KR1020010071271
申请日：2001-11-16
申请人： 한국전자통신연구원
发明人： 강군석 , 최권휴 , 김수영 , 이호진
IPC分类号： H04L27/26
CPC分类号： H04L27/2621
摘要： A method for optimizing phase factors in partial transmit sequence orthogonal frequency division multiplexing system. The method includes initializing sub-block signals by applying an initial phase factor to the sub-block signals in all sub-blocks; setting a reference peak value with a peak value of a signal formed by combining the sub-block signals; selecting a phase value that minimizes the peak value of an output signal as the phase factor of each sub-block by applying a next phase value to each sub-block signal as the phase factor, and repeating this with respect to the remaining available phase values.
摘要翻译：一种优化部分发射序列正交频分复用系统相位因子的方法。该方法包括通过将初始相位因子应用于所有子块中的子块信号来初始化子块信号; 设置具有通过组合子块信号而形成的信号的峰值的参考峰值; 通过将下一个相位值作为相位因子应用于每个子块信号来选择使输出信号的峰值最小化的相位值作为每个子块的相位因子，并且针对剩余的可用相位值。

44. 发明公开

KR1020040056473A 다중반송파 코드분할 다중접속에서의 스크램블링 시스템및 방법, 그 프로그램이 저장된 기록매체 有权
标题翻译：多载波CDMA和记录媒体存储程序中的屏蔽系统和方法
公开(公告)号：KR1020040056473A
公开(公告)日：2004-07-01
申请号：KR1020020082858
申请日：2002-12-23
申请人： 한국전자통신연구원 , 브이케이 주식회사
发明人： 최권휴 , 강군석 , 김수영 , 오덕길
IPC分类号： H04J13/10
CPC分类号： H04L27/2621 , H04B1/707 , H04B2201/70706 , H04L5/0021 , H04L25/03866 , H04L27/2602
摘要： PURPOSE: A scrambling system and method in a multi-carrier CDMA and a recording medium storing its program are provided to reduce a PARR(Peak-to-Average Power Ratio) by changing a scrambling code according to user's combination of orthogonal codes. CONSTITUTION: A symbol modulator modulates a bit sequence of the kth user into symbols(S1), and a multiplier multiplies each modulated symbols to an orthogonal code to spread it to a chip sequence(S2). An adder adds the spread chip sequences in synchronization with a symbol timing, and an interleaver performs interleaving on chip sequences of M number of symbols to be transmitted and aligns chips making the same symbols at M-chip intervals(S3). A serial/parallel converter converts the aligned chip sequences into a parallel chip signal having the number of sub-carriers(S4), and a scrambling chip vector generator and a multiplier multiply the parallel chip signal to a scrambling code and transmit it to an inverse Fourier converter(S5). The inverse Fourier converter, the parallel/serial converter and a guard time inserting unit modulate one chip of each sub-carrier to generate a multi-carrier signal, and output it(S6).
摘要翻译：目的：提供多载波CDMA和存储其程序的记录介质中的加扰系统和方法，以通过根据用户的正交码组合改变扰码来降低PARR（峰值平均功率比）。构成：符号调制器将第k个用户的比特序列调制成符号（S1），并且乘法器将每个调制符号乘以正交码以将其扩展到码片序列（S2）。加法器将码片序列与符号定时同步地相加，并且交织器对要发送的M个码元的码片序列执行交织，并且以M码片间隔对准使相同符号的码片（S3）。串行/并行转换器将对准的码片序列转换成具有子载波数的并行码片信号（S4），并且加扰码片矢量发生器和乘法器将并行码片信号乘以扰码并将其发送到反相傅里叶变换器（S5）。逆傅立叶变换器，并行/串行转换器和保护时间插入单元调制每个子载波的一个芯片以产生多载波信号并输出（S6）。

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