Channel Capacity Techniques of Secondary User in Cognitive Environment with Nullspace Filling
Bi Hong, Wan Choi · 대한전자공학회 학술대회 · 2011
This paper is dealing with the method of increasing the channel capacity of secondary user with using nullspace of primary interference channel in cognitive environment even if primary user is in its licensed band. Simulation result shows meaningful total channel capacity improvement over preexisting cognitive model with theoretical analysis. Typically presented cognitive models didn’t provide any spatial diversity gain with secondary user transparency to primary user. The work presented this paper gives future study of interference alignment of secondary user and helps the problem of maximization of channel capacity in cognitive model.