An interference cancellation strategy for broadcast in hierarchical cell structure
Type
Conference PaperKAUST Department
Electrical Engineering ProgramComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Sensors Lab
Date
2014-12Permanent link to this record
http://hdl.handle.net/10754/565015
Metadata
Show full item recordAbstract
In this paper, a hierarchical cell structure is considered, where public safety broadcasting is fulfilled in a femtocell located within a macrocell. In the femtocell, also known as local cell, an access point broadcasts to each local node (LN) over an orthogonal frequency sub-band independently. Since the local cell shares the spectrum licensed to the macrocell, a given LN is interfered by transmissions of the macrocell user (MU) in the same sub-band. To improve the broadcast performance in the local cell, a novel scheme is proposed to mitigate the interference from the MU to the LN while achieving diversity gain. For the sake of performance evaluation, ergodic capacity of the proposed scheme is quantified and a corresponding closed-form expression is obtained. By comparing with the traditional scheme that suffers from the MU's interference, numerical results substantiate the advantage of the proposed scheme and provide a useful tool for the broadcast design in hierarchical cell systems.Conference/Event name
2014 IEEE Global Communications Conference, GLOBECOM 2014ISBN
9781479935116ae974a485f413a2113503eed53cd6c53
10.1109/GLOCOM.2014.7037068