Femtocells, Interference Coordination and Belief Propagation
Event details
| Date | 24.06.2010 |
| Hour | 10:15 |
| Speaker | Dr Sundeep Rangan, Polytechnic Institute of New York University |
| Location | |
| Category | Conferences - Seminars |
Recent years, have witnessed an explosive demand for cellular wireless data -- a trend that is not abating. Cisco, for example, estimates that wireless data may grow by as much as 38 fold by 2013. Meeting this demand in a cost effective manner presents a major challenge for cellular operators and wireless engineers.
One promising new technology for deploying radically cheaper networks is femtocells, which are small (typically < 1W) base stations installed in the customer's premises. With their smaller form factor, self-configuration capabilities, and ability to leverage the customer's backhaul, femtocells can be deployed at a fraction of the cost of traditional macrocellular networks.
This talk will discuss a number of the technical challenges concerning femtocells, with a focus on problems of interference
coordination. Devices in mixed femto / macro deployments often experience strong interference conditions not well-handled by traditional cellular power control. We offer alternative interference coordination methods based on subband scheduling -- a new technique available in 4G cellular systems such as LTE.
We will also see that the mathematics of interference coordination can be seen as a type of distributed optimization with linear mixing. Time permitting, I will discuss connections to graphical models and belief propagation and applications to other problems including neural mapping and compressed sensing.
Prof. Rangan's homepage
Practical information
- General public
- Free