Computer Science – Information Theory
Scientific paper
2011-10-04
Computer Science
Information Theory
4 pages, 1 figure, presented at the CWIT 2011
Scientific paper
A network consisting of a point-to-point (P2P) link and a multiple access channel (MAC) sharing the same medium is considered. The resulting interference network, with three transmitters and two receivers is studied from degrees of freedom (DoF) perspective, with and without cognition. Several cognition variants are examined. Namely, the setup is studied with (1) no cognitive transmitters, (2) a cognitive P2P transmitter, (3) one cognitive MAC transmitter, and (4) with two cognitive MAC transmitters. It is shown that having a cognitive P2P transmitter does not bring any DoF gain to the network. This is obtained by showing that the DoF of the two former cases (1) and (2) is 1. However, it is shown that a cognitive MAC transmitter is more beneficial since the latter two cases (3) and (4) have 3/2 DoF. The achievability of 3/2 DoF is guaranteed by using a combination of interference neutralization and interference alignment.
Chaaban Anas
Sezgin Aydin
No associations
LandOfFree
Interference Alignment and Neutralization in a Cognitive 3-User MAC-Interference Channel: Degrees of Freedom does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Interference Alignment and Neutralization in a Cognitive 3-User MAC-Interference Channel: Degrees of Freedom, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Interference Alignment and Neutralization in a Cognitive 3-User MAC-Interference Channel: Degrees of Freedom will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-268174