Research Article
Simultaneous reception and sensing using multiple antennas in cognitive cellular networks
@INPROCEEDINGS{10.4108/icst.crowncom.2014.255096, author={Prasanth Karunakaran and Thomas Wagner and Ansgar Scherb and Wolfgang Gerstacker and Aylin Solak}, title={Simultaneous reception and sensing using multiple antennas in cognitive cellular networks}, proceedings={9th International Conference on Cognitive Radio Oriented Wireless Networks}, publisher={IEEE}, proceedings_a={CROWNCOM}, year={2014}, month={7}, keywords={sensing cognitive radio lte energy detection beamforming spectrum sharing d2d}, doi={10.4108/icst.crowncom.2014.255096} }- Prasanth Karunakaran
Thomas Wagner
Ansgar Scherb
Wolfgang Gerstacker
Aylin Solak
Year: 2014
Simultaneous reception and sensing using multiple antennas in cognitive cellular networks
CROWNCOM
IEEE
DOI: 10.4108/icst.crowncom.2014.255096
Abstract
We consider the problem of sensing in the presence of a desired signal in the context of future 3GPP LTE-A based cognitive cellular systems employing multiple-input multiple-output (MIMO) transmission. Energy detection (ED) based on equal gain combining and beamforming are investigated. Receive beamformers for energy detection (ED) are designed according to the Neyman-Pearson criterion to maximize the probability of detection for a given probability of false alarm. Suitable suboptimum solutions to the maximization problem with a good tradeoff between performance and complexity are identified. Furthermore, we also formulate the likelihood ratio test (LRT) for this scenario. Performance simulations indicate that a significant performance gain is achieved in ED if the receive beamformer is chosen properly.