This also allows for some special symbols such as an idle symbol when there is no data to transmit.
这种做法也产生了一些特殊信号，例如说没有数据供发送时产生的空白信号。
2
To induce inter symbol interference which is due to multipath transmit effect in the water acoustic communication system, linear equalization can be adopted in the system.
为了减小水声通信系统中存在的由于多径传播效应引起的符号间干扰，可在系统中使用线性均衡器。
3
A novel approach is proposed for linear multi user detection in conjunction with transmit diversity to combat channel fading, multi user interference and inter symbol interference.