Many traditional data transmission schemes over wireless communication channels heavily rely on the assumption that channel state information is available. However, for time-varying channels it is not possible to reliably decide the validity of the previously performed channel estimate. Therefore, message transmission methods taking the time-varying nature of the communication channel into account must perform both data transmission and channel estimation simultaneously. This paper proposes two data transmission schemes over linear time-varying wireless communication channels with a single transmit antenna. In the first case we consider a single antenna receiver and in the second scenario the receiver is equipped with an antenna array. Both schemes rely on sparsity assumptions.

中文翻译：

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线性时变信道上的数据传输

许多传统的无线通信信道上的数据传输方案严重依赖于信道状态信息可用的假设。然而，对于时变信道，不可能可靠地确定先前执行的信道估计的有效性。因此，考虑到通信信道的时变特性的消息传输方法必须同时进行数据传输和信道估计。本文提出了两种在具有单个发射天线的线性时变无线通信信道上的数据传输方案。在第一种情况下，我们考虑单个天线接收器，在第二种情况下，接收器配备有天线阵列。两种方案都依赖于稀疏假设。