Distributed Antenna Tx/Rx Diversity Using Sparse Channel Estimation in Doubly Selective Nakagami-Rice Fading Channel

Recently, we have studied frequency-domain space-time block coded joint transmit/receive diversity (FD-STBC-JTRD) for distributed antenna network (DAN). The channel of DAN can be modeled as doubly-selective (time- and frequency-selective) Nakagami-Rice fading channel. FD-STBC-JTRD requires accurate channel state information (CSI). However, in a high mobility environment, channel estimation is a problem. In this paper, we introduce sparse channel estimation scheme and evaluate, by computer simulation, the downlink throughput performance of DAN using FD-STBC-JTRD in a high mobility environment. It is shown that the sparse channel estimation works well even in a high mobility environment.