LAUSR

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.