Underlay Device-to-Device Communications on Multiple Channels
Journal article, Peer reviewed
Accepted version
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Date
2018Metadata
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Original version
Elnourani, M., Hamid, M., Romero, D. & Beferull-Lozano, B. (2018). Underlay Device-to-Device Communications on Multiple Channels. In 2018 IEEE International Conference on Acoustics, Speech and Signal Processing (p. 3684-3688). IEEE. doi: 10.1109/ICASSP.2018.8462424Abstract
Since the spectral efficiency of wireless communications is already close to its fundamental bounds, a significant increase in spatial efficiency is required to meet future traffic demands. Device-to-device (D2D) communications provide such an increase by allowing nearby users to communicate directly without passing their packages through the base station. To fully exploit the benefits of this paradigm, proper channel assignment and power allocation algorithms are required. The main limitation of existing schemes, which restrict D2D transmitters to operate on a single channel at a time, is circumvented by the joint channel assignment and power allocation algorithm proposed in this paper. This algorithm relies on convex relaxation to efficiently obtain nearlyoptimal solutions to the mixed-integer program arising in this context. Numerical experiments corroborate the merits of the proposed scheme relative to state-of-the art alternatives.