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1. 发明授权

US07319660B2 Device and method for symbol frame synchronization of OFDM transmitter and receiver 有权
标题翻译： OFDM发射机和接收机的符号帧同步的装置和方法
公开(公告)号：US07319660B2
公开(公告)日：2008-01-15
申请号：US10412262
申请日：2003-04-14
申请人： Ki-yun Kim , Ho Kim , Jun-yun Lee , Hyung-jin Choi
发明人： Ki-yun Kim , Ho Kim , Jun-yun Lee , Hyung-jin Choi
IPC分类号： H04J11/00
CPC分类号： H04L27/2613 , H04L27/2656
摘要： Provided is a frame synchronization pattern design and synchronization method by which in a transmitter of a communications system employing an orthogonal frequency division multiplexing (OFDM), a frame synchronization pattern is inserted into the starting part of a symbol frame, and by detecting the frame synchronization pattern in a receiver, synchronization of the OFDM transmitter and receiver is performed. Also, provided are a transmitter synchronization apparatus including an OFDM symbol frame generation unit, a frame synchronization pattern insertion unit, and an OFDM transmission signal conversion unit, and a receiver synchronization apparatus comprising a frame synchronization pattern inserted OFDM symbol frame conversion unit, a frame synchronization pattern detection unit, and a source data generation unit.Overcoming the conventional notion depending on the earlier art OFDM symbol standards, the OFDM symbol frame start detection method according to the present invention places a free-length code pattern, which is separately generated in a time domain, in the starting point of a frame and detects this pattern such that accuracy and efficiency greatly improve. Also, since the power value of a received signal is detected in the method, the communications system operates regardless of the frequency offset and phase offset. In addition, since a free-length pattern can be designed, the start point of a frame can be accurately detected in a seriously fading channel, by detecting a maximum peak based on correlation.
摘要翻译：提供了一种帧同步模式设计和同步方法，在采用正交频分复用（OFDM）的通信系统的发射机中，将帧同步模式插入符号帧的起始部分，并通过检测帧同步接收机中的模式，执行OFDM发射机和接收机的同步。此外，提供了包括OFDM符号帧生成单元，帧同步码型插入单元和OFDM传输信号转换单元的发射机同步装置，以及包括帧同步码型插入OFDM符号帧转换单元的接收机同步装置，同步模式检测单元和源数据生成单元。根据本发明的OFDM符号帧起始检测方法克服了以前的OFDM符号标准的常规概念，将在时域中单独生成的自由长度码模式放在帧的起点处，检测这种模式，使得精度和效率大大提高。此外，由于在该方法中检测到接收信号的功率值，所以通信系统不管频率偏移和相位偏移如何运行。此外，由于可以设计自由长度图案，因此通过基于相关性检测最大峰值，可以在严重衰落的信道中准确地检测帧的起始点。

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