Computer Science – Information Theory
Scientific paper
2011-03-20
Computer Science
Information Theory
6 pages, 5 figures, Submitted to Globecom 2011
Scientific paper
In this paper, we study single cell multi-user downlink distributed antenna systems (DAS) where the antenna ports are geographically separated in a cell. First, we derive an expression of the ergodic sum rate for DAS in the presence of pathloss. Then, we propose a transmission selection scheme based on the derived expressions to maximize the overall ergodic sum rate. Utilizing the knowledge of distance information from a user to each distributed antenna (DA) port, we consider the pairings of each DA port and its supporting user to optimize the system performance. Then, we compute the ergodic sum rate for various transmission mode candidates and adopt a transmission selection scheme which chooses the best mode maximizing the ergodic sum rate among the mode candidates. In our proposed scheme, the number of mode candidates are greatly reduced compared to that of the ideal mode selection. Through Monte Carlo simulations, we will show the accuracy of our derivation for the ergodic sum rate expression. Moreover, simulation results with the pathloss modeling confirm that the proposed transmission selection scheme produces the average sum rate identical to the ideal mode selection with significantly reduced selection candidates.
Kim Heejin
Lee Inkyu
Lee Kyoung-Jae
Lee Sang-Rim
No associations
LandOfFree
Transmission Selection Schemes using Sum Rate Analysis in Distributed Antenna Systems does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Transmission Selection Schemes using Sum Rate Analysis in Distributed Antenna Systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transmission Selection Schemes using Sum Rate Analysis in Distributed Antenna Systems will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-695241