摘要
本文以802.11g下行发射信号为数据源,在接收端对经编码、交织、调制、OFDM等处理的下行发射信号进行接收处理。应用延时相关算法确定接收信号的帧起始位置;计算短前导的相位信息对长前导序列进行相位补偿;继而根据导频信号和信道估计算法估计信道的频率响应和相位响应。自此,不但可以确定数据域信号的起始位置,还可以根据信道特性解析数据域信号,实现数据发射端信号的可靠接收。
In this paper,we design a receiver to receive and process the 802.11g downlink transmitted signal.As we all know,MAC frame will be transmitted by encoding,interleaving,modulation and OFDM with a signal header.At the receiving end,we introduce Delay Correlation Algorithm to determine the start position of the receiving signal.Then we use only the short training sequence for estimating the frequency offset between sender and receiver.Of course,we can use pilot sequence to achieve channel estimation.Therefore,we can analyze the data signal and realize the reliable transmission of the signal.
出处
《软件》
2016年第1期81-84,104,共5页
Software
