Secrecy wireless information and power transfer with MISO beamforming

By Liang Liu, Rui Zhang, Kee Chaing Chua. Global Communications Conference, 2013

453 citations recorded by the source corpus.

The dual use of radio signals for simultaneous wireless information and power transfer (SWIPT) has recently drawn significant attention. To meet the practical requirement that energy receivers (ERs) operate with much higher received power than information receivers (IRs), ERs need to be deployed closer to the transmitter than IRs. However, due to the broadcast nature of wireless channels, one critical issue is that the messages sent to IRs cannot be eavesdropped by ERs, which possess better channels from the transmitter. In this paper, we address this new secrecy communication problem in a multiuser multiple-input single-output (MISO) SWIPT system where a multi-antenna transmitter sends information and energy simultaneously to one IR and multiple ERs, each with a single antenna. By optimizing transmit beamforming vectors and their power allocation, we maximize the weighted sum-energy transferred to ERs subject to a secrecy rate constraint for the information sent to the IR. We solve this non-convex problem optimally by reformulating it into a two-stage problem. First, we fix the signal-to-interference-plus-noise ratio (SINR) at the IR and obtain the optimal beamforming solution by applying the technique of semidefinite relaxation (SDR). Then the original problem is solved by a one-dimension search over the optimal SINR value for the IR. Furthermore, two suboptimal low-complexity beamforming schemes are proposed, and their achievable (secrecy) rate-energy (R-E) regions are compared against that by the optimal scheme.

Subfields: Aerospace Engineering, Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/97acc463b05c35957859379c53493b5d4c897801

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Citations in the corpus

Communications and Signals Design for Wireless Power Transmission (2016, background): “Another interesting application in SWIPT systems is to utilize the energy signals as artificial noise to protect the messages for the information receivers from being eavesdropped by the non-intended energy receivers [197], [198].”
Secure Wireless Communication via Intelligent Reflecting Surface (2019, methodology): “To maximize secrecy communication rate, various techniques such as jamming with artificial noise (AN) and multi-antenna beamforming have been proposed [9]–[11].”
Joint Transmit Beamforming and Receive Power Splitting for MISO SWIPT Systems (2013, methodology): “We focus our study on PS receivers instead of TS receivers in [7], [8], such that each MS can receive both information and energy from the BS continuously at all time.”
Advances in Energy Harvesting Communications: Past, Present, and Future Challenges (2016, background): “In [176], two problems are investigated to address a physical-layer security issue that information sent to the information receivers can be eavesdropped by the energy receivers.”
A Survey on Multiple-Antenna Techniques for Physical Layer Security (2017, background): “The case with multiple power receivers, also treated as potential eavesdroppers, was studied in [251].”
Physical-Layer Security of 5G Wireless Networks for IoT: Challenges and Opportunities (2019, background): “dropper for secrecy information nodes as well as to operate non-ID receivers as the primary source of EH [77].”
Wireless Information and Power Transfer in Cooperative Networks With Spatially Random Relays (2014, methodology): “In [8] the combination of SWIPT with secure communications has also been considered, where an optimal beamforming and power allocation solution has been propose d to avoid the source information being intercepted by the ene rgy harvesting eavesdroppers.”
Fundamentals of Wireless Information and Power Transfer: From RF Energy Harvester Models to Signal and System Designs (2018, background): “Moreover, the linear beamforming design for achieving the optimal tradeoff between the secrecy rate of the IRs and energy harvested by the ERs is studied in [102] and [103], in which the ERs are treated as potential eavesdroppers.”
Opportunities and Challenges for Near-Field Wireless Power Transfer: A Review (2017, background): “Thus, a radeoff between power transfer efficiency and information transmission security is necessary, as presented in [47].”
Principles of Physical Layer Security in Multiuser Wireless Networks: A Survey (2010, background): “For instance, massive MIMO systems, overlay cognitive radio networks, smart grid systems [294], networ ks with simultaneous wireless information and power transfer [295], and heterogeneous networks [296] are untapped case studies from a secrecy perspective, to name just a few.”
Wireless powered communication: opportunities and challenges (2014, methodology): “Besides, information secrecy could be achieved between the HAP and information re ceiv rs using physical layer secrecy coding techniques [6].”
Wireless Networks With RF Energy Harvesting: A Contemporary Survey (2014, background): “In [184], the authors investigate a joint design of transmit beamforming vectors and power allocation with different ob jectives.”
Simultaneous Wireless Information and Power Transfer (SWIPT): Recent Advances and Future Challenges (2018, methodology): “In [172], artificial noise is used to interfere with the eavesdropper for secrecy information nodes as well as to operate as the primary source of EH for non-ID receivers.”
Robust Beamforming for Secure Communication in Systems With Wireless Information and Power Transfer (2013, background): “Exploiting an energy signal to provide secure communicatio n in systems with separated information and energy harvestin g receivers was studied in [17], [18].”