-
公开(公告)号：KR1020140046539A
公开(公告)日：2014-04-21
申请号：KR1020120110299
申请日：2012-10-04
Applicant: 목포대학교산학협력단
CPC classification number: H04L25/0224 , H04B7/15535 , H04J11/00
Abstract: The present invention relates to a method of estimating a channel in a bidirectional relay system which operates in a frequency selective fading channel and provides a channel estimating technique which minimizes the distortion of a power amplifier and maximum to average power ratio by using training progression which satisfies an optimum condition. [Reference numerals] (AA,BB) Start; (CC) Generate a transmission signal by adding cyclic prefix after an S_1 communication node generates a training sequence X_1; (DD) Generate a transmission signal by adding cyclic prefix after an S_2 communication node generates a training sequence X_2; (EE) First step; (FF) Second step of simultaneously transmitting the transmission signal generated in the first step to a relay by the S_1 communication node and the S_2 communication node; (GG) Third step of receiving the signal of the second step by a relay node, removing the cyclic prefix, inserting the cyclic prefix into a reception signal y_r from which the cyclic prefix is removed, and transmitting the same to each source node S_1 and S_2; (HH) Estimate instantaneous channel response f_1 after receiving the signal of the third step by the S_1 communication node and removing the cyclic prefix; (II) Estimate instantaneous channel response f_2 after receiving the signal of the third step by the S_2 communication node and removing the cyclic prefix; (JJ) Fourth step; (KK,LL) End
Abstract translation: 本发明涉及一种估计在频率选择性衰落信道中操作的双向中继系统中的信道的方法，并且提供一种信道估计技术，其使功率放大器的失真和最大平均功率比通过使用满足 最佳条件。 （标号）（AA，BB）开始; （CC）在S_1通信节点生成训练序列X_1之后，通过添加循环前缀生成发送信号; （DD）在S_2通信节点生成训练序列X_2之后，通过添加循环前缀生成发送信号; （EE）第一步; （FF）通过S_1通信节点和S_2通信节点同时发送在第一步骤中生成的发送信号到中继的第二步骤; （GG）通过中继节点接收第二步骤的信号的第三步骤，去除循环前缀，将循环前缀插入到循环前缀被去除的接收信号y_r中，并将其发送到每个源节点S_1和 S_2; （HH）在S_1通信节点接收到第三步骤的信号后，估计瞬时信道响应f_1，并删除循环前缀; （II）估计S_2通信节点接收到第三步信号后的瞬时信道响应f_2，去除循环前缀; （JJ）第四步; （KK，LL）结束
-
公开(公告)号：KR101452939B1
公开(公告)日：2014-10-23
申请号：KR1020120110299
申请日：2012-10-04
Applicant: 목포대학교산학협력단
Abstract: 본 발명은, 주파수 선택적 페이딩 채널에서 동작하는 양방향 릴레이 시스템에서 채널을 추정하는 방법에 관한 것으로서, 최적 조건을 만족하는 훈련 수열을 사용함으로써 최대대비평균전력비를 최소로 하며 전력 증폭기에서의 왜곡을 최소화하는 채널 추정 기법을 제공한다.
-
公开(公告)号：KR1020140046707A
公开(公告)日：2014-04-21
申请号：KR1020120112555
申请日：2012-10-10
Applicant: 목포대학교산학협력단
CPC classification number: H04B7/0671 , H04B7/155 , H04L27/26
Abstract: In the present invention, disclosed is a method for multi-antenna relay transmission and reception for an OFDM system. The method for relay transmission and reception according to an aspect of the present invention, in which a source node transmits OFDM type data to a target node through a multi-antenna relay node, includes a step where the relay node digitally converts each of signals received by multiple antennas; a step of removing cyclic prefix with respect to each OFDM symbol of the digitally converted signal; a step of selecting the signal with the highest OFDM symbol power among antenna-specific reception signals from which the cyclic prefix is removed; a step of generating an antenna-specific transmission signal through amplification after cyclic delay of the selected signal with different cyclic delay values in respective antennas during the step of the selection; a step of adding the cyclic prefix to the antenna-specific transmission signal; and a step of converting the antenna-specific transmission signal with the added cyclic prefix into analog and transmitting the antenna-specific transmission signal. [Reference numerals] (210) Digital conversion unit; (220) Cyclic prefix removal unit; (230) Reception antenna selection and coupling unit; (240) Cyclic delay diversity signal generation unit; (250) Cyclic prefix insertion unit; (260) Analogue conversion unit
Abstract translation: 在本发明中，公开了一种用于OFDM系统的多天线中继发送和接收的方法。 根据本发明的一个方面的用于中继发送和接收的方法，其中源节点通过多天线中继节点将OFDM类型的数据发送到目标节点包括以下步骤：中继节点数字地转换接收的每个信号 通过多个天线; 删除关于数字转换信号的每个OFDM符号的循环前缀的步骤; 在除去循环前缀的天线专用接收信号中选择具有最高OFDM符号功率的信号的步骤; 在所述选择步骤期间，通过在相应天线中具有不同循环延迟值的所选信号的循环延迟之后通过放大产生天线特定发送信号的步骤; 将循环前缀添加到天线特定发送信号的步骤; 以及将具有添加的循环前缀的天线特定发送信号转换为模拟并发送天线专用发送信号的步骤。 （附图标记）（210）数字转换单元; （220）循环前缀删除单元; （230）接收天线选择和耦合单元; （240）循环延迟分集信号生成单元; （250）循环前缀插入单元; （260）模拟转换单元
-
-
Search Results
3
records
(took 0.016 seconds)
