公开(公告)号：KR1020120065130A

公开(公告)日：2012-06-20

申请号：KR1020100126476

申请日：2010-12-10

Applicant: 한국전자통신연구원

Inventor： 한제희 ,  김판수 ,  오덕길 ,  자비어질로드

IPC: H04L27/18 ,  H04B7/185

CPC classification number: H04B7/2125 ,  H04B7/18589 ,  H04L7/04 ,  H04L2027/0024 ,  H04L2027/0067 ,  H04L2027/0079 ,  H04L2027/0095

Abstract: PURPOSE: A method for demodulating signals in a return link of a satellite system and a demodulating apparatus thereof and a method for modulating signals in the return link and a modulating apparatus thereof are provided to check a symbol of a burst signal in a reception terminal by modulating the burst signal in a transmission terminal of a return link in a satellite system. CONSTITUTION: The symbol timing of burst, which is received through a return link of a satellite system, is estimated. The estimated symbol timing of the received burst is synchronized by reference symbol timing(110). An Oerder & Myer algorithm of a non data-aided method is used to estimate a symbol timing error. A location of timing synchronous burst is synchronized to a reference burst location(150) by using a preamble symbol and a postamble symbol of the timing synchronous burst synchronized by symbol timing(130). A carrier wave of the location synchronous burst is recovered by using a pilot symbol of the location synchronous burst synchronized to the reference burst location.

Abstract translation: 目的：一种用于解调卫星系统的返回链路中的信号的方法及其解调装置，以及用于调制返回链路中的信号的方法及其调制装置，用于通过以下方式检查接收终端中的突发信号的符号： 调制卫星系统中的返回链路的发送终端中的脉冲串信号。 构成：通过卫星系统的返回链路接收的突发符号定时被估计。 接收脉冲串的估计符号定时由参考符号定时（110）同步。 使用非数据辅助方法的Oerder和Myer算法来估计符号定时误差。 定时同步突发的位置通过使用由符号定时（130）同步的定时同步脉冲串的前导码符号和后同步符号同步到参考突发位置（150）。 通过使用与参考突发位置同步的位置同步突发的导频符号来恢复位置同步突发的载波。