A Novel Wireless Communication Paradigm for Intelligent Reflecting Surface Based Symbiotic Radio Systems
arXiv:2104.09161 · doi:10.1109/TSP.2021.3135603
Abstract
This paper investigates a novel intelligent reflecting surface (IRS)-based symbiotic radio (SR) system architecture consisting of a transmitter, an IRS, and an information receiver (IR). The primary transmitter communicates with the IR and at the same time assists the IRS in forwarding information to the IR. Based on the IRS's symbol period, we distinguish two scenarios, namely, commensal SR (CSR) and parasitic SR (PSR), where two different techniques for decoding the IRS signals at the IR are employed. We formulate bit error rate (BER) minimization problems for both scenarios by jointly optimizing the active beamformer at the base station and the phase shifts at the IRS, subject to a minimum primary rate requirement. Specifically, for the CSR scenario, a penalty-based algorithm is proposed to obtain a high-quality solution, where semi-closed-form solutions for the active beamformer and the IRS phase shifts are derived based on Lagrange duality and Majorization-Minimization methods, respectively. For the PSR scenario, we apply a bisection search-based method, successive convex approximation, and difference of convex programming to develop a computationally efficient algorithm, which converges to a locally optimal solution. Simulation results demonstrate the effectiveness of the proposed algorithms and show that the proposed SR techniques are able to achieve a lower BER than benchmark schemes.
arXiv commentThis manuscript has been submitted to IEEE journal for possible publication
References in corpus (10)
- Intelligent Reflecting Surface vs. Decode-and-Forward: How Large Surfaces Are Needed to Beat Relaying?
- Intelligent Reflecting Surface-Enhanced OFDM: Channel Estimation and Reflection Optimization
- A Framework of Robust Transmission Design for IRS-aided MISO Communications with Imperfect Cascaded Channels
- Sequence Design to Minimize the Weighted Integrated and Peak Sidelobe Levels
- Intelligent Reflecting Surface Enhanced Wireless Network: Two-timescale Beamforming Optimization
- Intelligent Reflecting Surface Aided MIMO Broadcasting for Simultaneous Wireless Information and Power Transfer
- Reflections in the Sky: Joint Trajectory and Passive Beamforming Design for Secure UAV Networks with Reconfigurable Intelligent Surface
- Joint Source-Relay Design for Full--Duplex MIMO AF Relay Systems
- Large Intelligent Surface Aided Physical Layer Security Transmission
- IRS-Assisted Green Communication Systems: Provable Convergence and Robust Optimization
Cited by in corpus (5)
- Intelligent Reflecting Surface Enabled Multi-Target Sensing
- Reconfigurable Intelligent Surfaces for 6G -- Applications, Challenges and Solutions
- Pilot Design and Signal Detection for Symbiotic Radio over OFDM Carriers
- Revolutionizing Symbiotic Radio: Exploiting Tradeoffs in Hybrid Active-Passive Communications
- A Novel Stochastic Model for IRS-Assisted Communication Systems Based on the Sum-Product of Nakagami- Random Variables