Linear Aligned Network Diagonalization for Mulit-hop Wireless Networks
- Detailed Technology Description
- A novelcommunication scheme for interference management in mulit-hop wireless networks that handles relaying and interference management in a coupled manner and significantly increases spectral efficiency.
- Others
-
- Patent applications: US 14/061,007; KR10-2013-0104947
- I. Shomorony and A. S. Avestimehr, "Degrees of Freedom of Two-HopWireless Networks: Everybody Gets the Entire Cake", Allerton 2012. (Slides)
- *Abstract
-
Non-exclusive rights available.
The conventional design ofwireless networks is based on a centralized architecture where a base station,or an access point, directly exchanges data with the end users. Thus,communication is essentially restricted to the one-to-many (broadcast) andmany-to-one (multiple-access) single-hop paradigms. Given the dramatic increasein the number of users and wireless data traffic, caused by the success ofonline media streaming services and the proliferation of smart phones, tablets,and netbooks, the future of wireless networks, multi-hop and multiflowparadigms are expected to play a very important role by enabling a denserspatial reuse of the spectrum and adaptation to heterogeneous scenarioscharacterized by user-deployed and user-operated infrastructures.
This technology is a novelcommunication scheme for interference management in two-hop wireless networks that handles relaying and interference management in a coupled manner. It takes the vector of received signals at the relays and modifies them to make it appear that the transfer matrix of the first hop is the inverse ofthe transfer matrix of the second hop. In this way, the data streamstransmitted by the sources can undergo a diagonal linear transformation from thesources to the destinations, thus being received free of interference by theirintended destination. The scheme theoretically can provide a factor of twoincrease in spectral efficiency, as compared with the state-of-the-artinterference management schemes in the literature. The scheme has been extended to multi-hop networks with fully connected hops, and multi-hop networks with MIMO nodes.
Potential Applications
Wireless communications in two-hop and multi-hop networks
Advantages
- Increased spectral efficiency
- Reduced interference
- *Licensing
- Patrick Govangpjg26@cornell.edu(607) 254-2330
- Country/Region
- USA
