On the Capacity of Wireless Powered Cognitive Relay Network with Interference Alignment

Abstract

In this paper, a two-hop decode-and-forward cognitive radio system with deployed interference alignment is considered. The relay node is energy-constrained and scavenges the energy from the interference signals. In the literature, there are two main energy harvesting protocols, namely, time-switching relaying and power-splitting relaying. We first demonstrate how to design the beamforming matrices for the considered primary and secondary networks. Then, the system capacity under perfect and imperfect channel state information scenarios, considering different portions of time-switching and power-splitting protocols, is estimated.

14 pages, 4 figures, To appear in IEEE Global Communications Conference 2017, Singapore, December 2017

References in corpus (3)

• Enhancing Wireless Information and Power Transfer by Exploiting Multi-Antenna Techniques
• Information and Energy Cooperation in Cognitive Radio Networks
• Ergodic Capacity Analysis of Wireless Powered AF Relaying Systems over $\alpha$-$\mu$ Fading Channels

Cited by in corpus (3)

• Error Performance of Wireless Powered Cognitive Relay Networks with Interference Alignment
• Ergodic Capacity Analysis of Wireless Powered AF Relaying Systems over $\alpha$-$\mu$ Fading Channels
• On the Feasibility of Interference Alignment in Compounded MIMO Broadcast Channels with Antenna Correlation and Mixed User Classes