원문정보
초록
영어
SORTD (Space Orthogonal-Resource Transmit Diversity) has already become a better way of transmit diversity for PUCCH format 3 in LTE-A [1]. SORTD technology lies in the characteristic that each antenna port transmits signal by using different cyclic shift [2] to make orthogonal each other. Using the SORTD’s feature of incoherence in different antennas, this paper proposes a special form of signal model. Based on this proposed model, we propose a low complexity channel estimator based on LS and cubic spline interpolation, and then we put a LS and DCT algorithm to improve the interpolation performance. Finally, for more accurate estimator we drive the third approach based on MMSE and DCT. A series of theoretical researches and simulation results show that all of them are suitable for the proposed signal model even in the environment of high-speed movement; especially the algorithms with DCT have a better performance.
목차
1. Introduction
2. System Model
2.1. The Generation of DMRS
2.2. Signal Model
3. Channel Estimation Model
3.1. The Channel Estimator based on LS and Cubic Spline Interpolation
3.2. The Channel Estimation Approach based on LS and DCT
3.3. The Channel Estimating Approach based on MMSE and DCT
4. Simulations and Analyses
4.1. Simulation Environment
4.2. The Analysis of Simulation Result
5. Conclusion
Acknowledgement
References