Research Article
Downlink Scheduling and Power Allocation in Cognitive Femtocell Networks
@INPROCEEDINGS{10.1007/978-3-319-24540-9_8, author={Hesham Elmaghraby and Dongrun Qin and Zhi Ding}, title={Downlink Scheduling and Power Allocation in Cognitive Femtocell Networks}, proceedings={Cognitive Radio Oriented Wireless Networks. 10th International Conference, CROWNCOM 2015, Doha, Qatar, April 21--23, 2015, Revised Selected Papers}, proceedings_a={CROWNCOM}, year={2015}, month={10}, keywords={Cognitive femtocell Cross-tier interference Resource assignment Outage constraint Power allocation}, doi={10.1007/978-3-319-24540-9_8} }- Hesham Elmaghraby
Dongrun Qin
Zhi Ding
Year: 2015
Downlink Scheduling and Power Allocation in Cognitive Femtocell Networks
CROWNCOM
Springer
DOI: 10.1007/978-3-319-24540-9_8
Abstract
We consider resource assignment and power allocation problem in femtocells under channel estimation errors. Our formulation is to maximize the throughput of femtocell users that share spectrum resources with macrocell base station (MBS) while limiting interference between macrocell and femtocells. Using cognitive capabilities, femtocell basestations (FBS) can acquire the needed information about the neighboring MBS users to reduce cross-tier interference between FBS and MBS users. We analyze the distributions of signal to interference and noise ratio (SINR) of MBS users and signal to interference ratio (SIR) of FBS users. Based on the analytical results, we present resource assignment and power allocation solutions to maximize the mean sum rate subject to SINR and SIR outage constraints, along with simulation verifications.
