상세정보
학술대회
RRH Selection and UE Transmission Time Adjustment for LTE-Advanced Uplink MU-MIMO in Distributed Antenna System Environment
- 발행일
- 201410
- 출처
- International Conference on Information and Communication Technology Convergence (ICTC) 2014, pp.301-305
- 협약과제
- 14MI8100, 밀리미터파 5G 이동통신 시스템 개발, 김태중
- 초록
- In this paper, after we investigate the influence of the arriving time difference on LTE-Advanced uplink MU-MIMO in Distributed Antenna System (DAS) environment, we suggest RRH selection and transmission time adjustment method for obtaining the receiving performance gain. DAS which is one of CoMP technologies has known as the most efficient technology for improving spectral efficiency and cell-edge user throughput. However, when uplink MU-MIMO is carried out in the DAS environment, the arriving time difference is inevitable owing to geographical distribution of RRHs location. The arriving time difference of the multiple UEs has decisive effect on system performance. Therefore, in this paper, we propose RRH selection and UE transmission time adjustment method for minimizing the arriving time difference. Through link-level simulation, we show the impact of the arriving time difference on LTE-Advanced uplink MU-MIMO in DAS environment and compare the performance of the suggested method with that of the conventional method.
- KSP 제안 키워드
- Adjustment method, Cell-Edge, Conventional methods, Geographical distribution, Long term evolution advanced(LTE-Advanced), Multiuser Multiple-Input Multiple-Output(MU-MIMO), Performance gain, RRH selection, Spectral efficiency(SE), System performance, distributed antenna systems(DAS)