원문정보
초록
영어
The 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) uplink supports only a single antenna transmission. However, in order to improve the uplink spectrum efficiency, support multiple antenna transmission in LTE-Advanced. Meanwhile, taking into account backwards compatibility for LTE. LTE-Advanced De-Modulation Reference Signal (DMRS) needs to be designed [1]. According to requirement of LTE-Advanced uplink pilot design, introducing orthogonal cover code (OCC) as a supplement, analysis and study of the current problems, proposes a Circular Shift (CS), Group/Sequence Hopping (GSH) and the OCC joint instructions method of pilot design. Finally, simulation and analysis of the performance of this scheme. Results show that this scheme can meet LTE- Advanced demand for pilot design well.
목차
1. Introduction
2. Problems Existing in Design of LTE-Advanced DMRS
2.1. The Cyclic Shift (CS) Value Indicator
2.2. Orthogonal Cover Code (OCC) Signaling Indicator Method
2.3. Group/Sequence Hopping (GSH) Instruction
3. An Improved DMRS Design Scheme
3.1. CS and OCC Design
3.2. GSH Design
3.3. CS, OCC and GSH Joint Design
3.4. Application Scenarios
4. Simulation and Performance Analysis
5. Conclusion
ACKNOWLEDGEMENTS
References