Research Article
Performance Analysis and Optimization of Downlink Multi-User MIMO LTE for Satellite Communications
@INPROCEEDINGS{10.1007/978-3-642-36787-8_9, author={Constantinos Angelis and Spiros Louvros}, title={Performance Analysis and Optimization of Downlink Multi-User MIMO LTE for Satellite Communications}, proceedings={Personal Satellite Services. 4th International ICST Conference, PSATS 2012, Bradford, UK, March 22-23, 2012. Revised Selected Papers}, proceedings_a={PSATS}, year={2013}, month={4}, keywords={LTE Satellite Multi-User MIMO OFDMA MAC transport channel}, doi={10.1007/978-3-642-36787-8_9} }- Constantinos Angelis
Spiros Louvros
Year: 2013
Performance Analysis and Optimization of Downlink Multi-User MIMO LTE for Satellite Communications
PSATS
Springer
DOI: 10.1007/978-3-642-36787-8_9
Abstract
This article presents a theoretical analysis for packet delay and simulation results for a realistic implementation of the Multi-User MIMO LTE Release 8 downlink standard in mobile satellite systems. Two Satellites, one Ground Station and two 2x2 MIMO Channels have been used as a basic configuration in the simulation scenarios and various key characteristics of the MIMO channel and the LTE radio interface, including physical layer and radio resource management functions ware simulated and their impact on system performance is evaluated for moving terminals in wide area scenarios. Simulation results suggest that in practice multi-user LTE, when applied to the transmission over satellite links, is able to support multi stream transmission with very high data rates, even for hand held moving terminals. Moreover, the improvements of Multi-User MIMO transmissions for different system configurations are clearly shown for different number of users. Finally a theoretical approach, considering OFDMA scheduler functionality, is presented leading into an optimization procedure for MAC transport channel packet length.