Mahmoud H. Ismail
Professor of Communications Engineering
Department of Electronics and Communications Engineering, Building 8 (email)
On the Relay Placement Problem in a Multi-cell LTE-Advanced System with Co-channel Interference
- Citation:
- Elgendy, O. A., M. H. Ismail, and K. Elsayed, "On the Relay Placement Problem in a Multi-cell LTE-Advanced System with Co-channel Interference", Proc. of the 8th IEEE Int.Conf on Wireless and Mobile Computing, Networking and Communications (WiMob 2012), Barcelona, Spain, October, 2012.
Date Presented:
OctoberAbstract:
One of the main problems in LTE-A networks is the small rates achieved by cell-edge users. This is due to the adoption of a frequency reuse factor of 1, which aims at increasing the overall capacity. This occurs, however, at the expense of increasing the interference level for cell-edge users. Cooperative communication through the use of relays is an efficient technique to solve this problem. However, careful placement of the relays is a crucial factor in determining the expected capacity gain. In this paper, the relay placement problem in an LTE-A network is studied, taking into consideration the effect of co-channel interference. An optimization framework is proposed to maximize either the total cell capacity or the total cell-edge capacity. Simulation results show a capacity gain factor of 8.027 for cell-edge users due to relay deployment, under 100% cell load in center cell and adjacent cells.