Signal transmission method and system of hand mobile digital multimedia transmission system

手持移动数字多媒体传输系统信号传输方法和系统

Abstract

This invention provides a signal transmission method and a system suitable for mobile handheld multimedia application, which receives input of multiple data streams, arranging the received data streams to a data set in equal intervals, converting the data set of FFT to generate a time domain known sequence, forming the known sequence and system information to a frame head and the known sequence and the data set by FFT conversion to a frame to be matched in rate to form a complete frame structure to be output, which utilizes time domain known information to carry out channel estimation and synchronization without frequency domain pilot signals and there are many selections to time domain sequence and the data frame composing a super frame head is added with frequency expansion protection system information.
本发明提供了一种适合于移动手持多媒体应用的信号传输方法和系统。首先接收多路数据流的输入;将接收到的多路数据流经过等间隔排序排列成一数据组;对数据组进行FFT变换;产生时域已知序列;将时域已知序列和系统信息组成帧头,并将时域已知序列和经过FFT变换的所述数据组组成帧体;以及速率匹配后形成完整的帧结构并输出。没有频域导频信号,而是应用时域已知信息来进行信道估计和同步。而且,这个时域已知序列可以有很多种选择。同时,在组成超帧帧头的数据帧体中加入了经过扩频保护的系统信息。可以有效的适应手持移动多媒体灵活多变的业务需求。

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    Publication numberPublication dateAssigneeTitle
    CN-101729485-BMay 16, 2012清华大学单载波超宽带发送方法与装置