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在无线通信中,由于信道特性而引起的码间干扰(ISI)是影响通信质量的一个主要因素。抵消ISI的基本方法就是对接收到的数据进行均衡,均衡前进行准确的信道估计非常重要。给出一种在此信息传输系统下基于隐训练序列的信道阶数的估计方法,并对其进行了仿真分析。仿真结果显示,通过对原发送信息序列进行了帧实际数据零均值处理,达到了比较准确的信道阶数估计效果。
In wireless communications, intersymbol interference (ISI) due to channel characteristics is a major factor affecting the quality of communications. The basic method to counteract ISI is to equalize the received data. It is very important to perform accurate channel estimation before equalization. An estimation method of channel order based on implicit training sequences under this information transmission system is given and the simulation analysis is carried out. The simulation results show that the original sequence of sent information is processed by zero-mean-frame real data to achieve a more accurate estimate of channel order.