Interference mitigation in femto-macro coexistence with two-way relay channel

Gowda, Kiran; Gesbert, David; Yilmaz, Erhan
ISIT 2011, IEEE International Symposium on Information Theory, July 31-August 5, 2011, Saint-Petersburg, Russia

Motivated by the femtocell networks where cross-tier interference management is crucial to achieve higher system throughput, we consider a basic interference model consisting of a MIMO two-way relay communication network in presence of a one-way point-to-point MIMO communication link. We propose an upper-bound on the maximum degrees of freedom of this channel. Precoders using signal-space alignment strategies at the transmitter and zero-forcing (ZF) receivers are shown to achieve the maximum degrees-of-freedom. The proposed solution is particularly interesting since it allows the macro transmitter to be oblivious to the interfering two-way link, which is an important feature for obtaining distributed solutions.

 


DOI
Type:
Conférence
City:
Saint-Petersburg
Date:
2011-07-31
Department:
Systèmes de Communication
Eurecom Ref:
3411
Copyright:
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