Investigation of Spectral and Energy Efficiency in LTE-A Heterogeneous Networks

• Main Authors: Hsieh, Tsung-Chan, 謝宗展
• Other Authors: Wang, Li-Chun
• Format: Others
• Language: en_US
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/78685921040199813053

碩士 === 國立交通大學 === 電信工程研究所 === 100 === In this thesis, we investigate both spectral and energy efficiency of hierarchical base station cooperation techniques in heterogeneous networks (HetNet) of the 3rd Generation Partnership Project (3GPP) Long Term Evolution-Advanced (LTE-A) system. We find that joint consideration of system architectures and cooperation schemes will achieve energy-efficient transmission. Because the co-channel interference can be mitigated significantly and the signal quality is able to be improved through base station coordination techniques, and the system architecture has great impacts on system performance. Especially, coordinated multi-point (CoMP) techniques of different levels, e.g., intra and inter-site CoMP, are considered jointly. We address the performance improvements of HetNet system with hierarchical base station coordination techniques by the joint design of both system architecture and coordinated transmission scheme. The proposed joint design methodology is a promising solution for improving spectral and energy efficiency compared to the conventional single user multi-input-multi-output (SU-MIMO) system.