Interference Management for Next-Generation Wireless Networks
Event details
| Date | 17.06.2009 |
| Hour | 10:15 |
| Speaker | Dr Sundeep Rangan, Qualcomm Technologies |
| Location | |
| Category | Conferences - Seminars |
Managing interference between users is the central challenge of multiuser wireless systems. While next-generation cellular standards offer enormous potential in improved capacity and services, several features in these systems will make interference management particularly challenging. Future cellular deployments are likely to involve mixtures of large-area macro cells along with unplanned, small-area pico and femto cells, relays, and other network elements. Such heterogeneous and unplanned networks can create adverse interference conditions that require intelligent interference management. In addition, as networks are designed to support low-latency, bursty traffic, fast adaption will be increasingly needed in any viable interference management strategy. In this talk, I will review some of the methods being considered in commercial cellular systems with an emphasis on their implications for scheduling algorithms and dynamic resource allocation. From a theoretical perspective, mitigating interference via scheduling can be seen as a complex, distributed optimization problem. I will present some possible strategies to address this problem. I will also discuss the implications of interference cancellation. Increased computational power is enabling advanced receiver algorithms at the mobile such as successive interference cancellation (SIC). I will argue that the possibility of SIC-enabled mobile devices suggests that we think of resource allocation in fundamentally new ways. In particular, I will present a new strategy based on "rate shaping" as opposed to dynamic orthogonalization. I will also argue that interference cancellation offers new scalable methods of sharing spectrum between macro cellular systems and short-range local communication.
Practical information
- General public
- Free