title : | DFT-based Channel Estimation Scheme for Sidehaul System |
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authors : | Myeonghun Chu, Sangmi Moon, Intae Hwang |
this_paper_appears_in : | 2015년도 International Joint Symposium 춘계학술대회 |
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dates : | November 2015 |
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Recently, the 3rd Generation Partnership Project (3GPP) has developed a sidehaul system to cope with the explosively increasing mobile data traffic. The sidehaul system is based on single carrier-frequency division multiple access (SC-FMDA) due to its low peak-to-average power ratio (PAPR). Also, a demodulation reference signal (DMRS) is designed to support multiple input multiple output (MIMO). In this paper, we propose the DFT-based channel estimation scheme for the sidehaul system. The proposed scheme uses the 2-dimensional minimum mean square error (2-D MMSE) interpolation scheme for the user moving at a high speed. Simulation results show that the proposed channel estimation scheme can improve the normalized mean square error (NMSE), error rate, and throughput of the conventional system.