Joint Transceiver and Power Splitter Design Over Two-Way Relaying Channel with Lattice Codes and Energy Harvesting

Abstract

This letter considers a compute-and-forward two-way relaying channel with simultaneous wireless information and power transfer. Specifically, two single-antenna users exchange information via a multi-antenna relay station based on nested lattice codes. Meanwhile, wireless energies flow from the relay to users for circuit consumption and uplink transmission. Based on this model, an optimization problem is formulated to minimize the transmit power at relay, while guaranteeing the minimal transmission rate at each user. To solve the problem, we propose an efficient iterative algorithm to jointly optimize the transmitter, receiver and power splitter, based on semi-definite relaxation and semi-definite programming. Numerical results of relay transmission powers validate our analysis.

arXiv commentThis version corrects some errors in the published letter

References in corpus (5)

• Relaying Protocols for Wireless Energy Harvesting and Information Processing
• Joint Transmit Beamforming and Receive Power Splitting for MISO SWIPT Systems
• Simultaneous Information and Power Transfer for Broadband Wireless Systems
• Cooperative Energy Harvesting Networks with Spatially Random Users
• Wireless Information and Power Transfer in Two-Way Amplify-and-Forward Relaying Channels

Cited by in corpus (2)

• Multi-Pair Two-Way Relay Network with Harvest-Then-Transmit Users: Resolving Pairwise Uplink-Downlink Coupling
• Beamforming for Simultaneous Wireless Information and Power Transfer in Two-Way Relay Channels