A Novel Evaluation Method for the Downlink Capacity of Distributed Antenna Systems
Wei Feng, Yifei Zhao, Ming Zhao, Shidong Zhou, Jing Wang, Minghua Xia · IEICE Transactions on Communications · 2009
This letter focuses on the simplified capacity evaluation for the downlink of a distributed antenna system (DAS) with random antenna layout. Based on system scale-up, we derive a good approximation of the downlink capacity by developing the results from random matrix theory. We also propose an iterative method to calculate the unknown parameters in the approximated expression of the downlink capacity. The approximation is illustrated to be quite accurate and the iterative method is shown to be quite efficient by Monte Carlo simulations.