Spectrally Efficient Protocols for Two-Way Relaying
Cooperative communication schemes have been proposed as a promising approach to supersede the conventional MIMO systems to achieve diversity and spatial multiplexing gains in a distributed manner with large number of nodes. Two-way relaying has been proposed to overcome the spectral efficiency loss in conventional half-duplex relaying schemes, where two channel uses are required for the transmission from the source to the destination, and this causes a pre-log factor 1/2 in the corresponding rate expressions. Instead, in two-way relaying, a bidirectional link is established between source and destination via a relay, with which the number of required time slot is reduced to two. When compared with the conventional one-way relaying schemes that would need four time slots for the same transmission, the spectral efficiency doubles with the bidirectional relaying.
In this project you will study multip-hop protocols for amplify-and-forward and decode-and-forward two-way
relaying, where energy-efficient range extension is obtained through multi hops. Extensions to MIMO nodes will also be considered.
|Subject area||Coopearative communications, MIMO, two-way relaying|
|Type of work||60% Theory, 40% Implementation (Matlab)|
|Supervisor||Dr. Celal Esli|
|Professor||Prof. Dr. Armin Wittneben|