{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,14]],"date-time":"2026-01-14T20:55:01Z","timestamp":1768424101998,"version":"3.49.0"},"reference-count":53,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2020,2,26]],"date-time":"2020-02-26T00:00:00Z","timestamp":1582675200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Key Research and Development Program of Shaanxi Province","award":["No."],"award-info":[{"award-number":["No."]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>In this paper, we investigate the outage performance of simultaneous wireless information and power transfer (SWIPT) based Decode-and-Forward (DF) relay networks, where the relay needs to simultaneously forward information for two relaying links, primary relaying link and parasitic relaying link. The primary relaying link is the traditional source-relay-destination relay system. While in the parasitic relaying link, the parasitic source, i.e., Internet-of-Things (IoT) tag, is not connected to the stable power source and thus has to backscatter the signals from the primary source to convey its information. The relay not only harvests energy from Radio Frequency (RF) signals from both sources but also forwards messages to their corresponding destinations. The primary source and destination are unaware of the parasitic backscatter transmission, but the relay and parasitic destination can employ successive interference cancellation (SIC) detector to eliminate the interference from the primary link and detect the message from the parasitic source. In order to investigate the interplay between the primary and parasitic relaying links, the outage probabilities of both relaying links are derived. Besides, the effects of system parameters, i.e., power splitting coefficient, forwarding power allocation coefficient and backscatter reflection coefficient, on the system performance are discussed. Simulation results verify our theoretical analysis. In the meanwhile, it is revealed that the advised relaying system has far larger sum throughput than the one with only primary relaying link and the parasitic relaying link can gain considerable throughput at the cost of negligible degradation of primary throughput.<\/jats:p>","DOI":"10.3390\/s20051273","type":"journal-article","created":{"date-parts":[[2020,2,27]],"date-time":"2020-02-27T03:21:16Z","timestamp":1582773676000},"page":"1273","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Outage Analysis of Parasitic Ambient Backscatter Communication in Decode-and-Forward Relay Networks with SWIPT"],"prefix":"10.3390","volume":"20","author":[{"given":"Yanhong","family":"Tuo","sequence":"first","affiliation":[{"name":"School of Information and Communications Engineering, Xi\u2019an Jiaotong University, Xi\u2019an, Shaanxi 710049, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5884-2169","authenticated-orcid":false,"given":"Chao","family":"Zhang","sequence":"additional","affiliation":[{"name":"School of Information and Communications Engineering, Xi\u2019an Jiaotong University, Xi\u2019an, Shaanxi 710049, China"}]}],"member":"1968","published-online":{"date-parts":[[2020,2,26]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"2889","DOI":"10.1109\/COMST.2018.2841964","article-title":"Ambient backscatter communications: A contemporary survey","volume":"20","author":"Huynh","year":"2018","journal-title":"IEEE Commun. Surv. Tutorials"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"4","DOI":"10.1109\/JSAC.2018.2872615","article-title":"Fundamentals of wireless information and power transfer: From RF energy harvester models to signal and system designs","volume":"37","author":"Clerckx","year":"2019","journal-title":"IEEE J. Sel. Areas Commun."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"28","DOI":"10.1109\/MSP.2018.2837678","article-title":"The Art of Signal Processing in Backscatter Radio for \u03bcW (or Less) Internet of Things: Intelligent Signal Processing and Backscatter Radio Enabling Batteryless Connectivity","volume":"35","author":"Bletsas","year":"2018","journal-title":"IEEE Signal Process. Mag."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"16","DOI":"10.1109\/MSP.2018.2848361","article-title":"Practical Backscatter Communication Systems for Battery-Free Internet of Things: A Tutorial and Survey of Recent Research","volume":"35","author":"Xu","year":"2018","journal-title":"IEEE Signal Process. Mag."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"5689","DOI":"10.1109\/TCOMM.2019.2912381","article-title":"Sum Throughput Maximization in Multi-Tag Backscattering to Multiantenna Reader","volume":"67","author":"Mishra","year":"2019","journal-title":"IEEE Trans. Commun."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"102","DOI":"10.1109\/MNET.2016.7437031","article-title":"A tutorial on the internet of things: from a heterogeneous network integration perspective","volume":"30","author":"Xu","year":"2016","journal-title":"IEEE Netw."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"22695","DOI":"10.1109\/ACCESS.2018.2828021","article-title":"Ambient Backscatter Communication Systems: Capacity and Outage Performance Analysis","volume":"6","author":"Zhao","year":"2018","journal-title":"IEEE Access"},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"1116","DOI":"10.1109\/JIOT.2018.2799848","article-title":"Cooperative Ambient Backscatter Communications for Green Internet-of-Things","volume":"5","author":"Yang","year":"2018","journal-title":"IEEE Internet Things J."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"844","DOI":"10.1109\/JIOT.2018.2861401","article-title":"IoT Communications with M -PSK Modulated Ambient Backscatter: Algorithm, Analysis, and Implementation","volume":"6","author":"Qian","year":"2019","journal-title":"IEEE Internet Things J."},{"key":"ref_10","doi-asserted-by":"crossref","unstructured":"Qian, J., Gao, F., and Wang, G. (2016, January 20\u201325). Signal detection of ambient backscatter system with differential modulation. Proceedings of the 2016 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Shanghai, China.","DOI":"10.1109\/ICASSP.2016.7472394"},{"key":"ref_11","doi-asserted-by":"crossref","unstructured":"Correia, R., and Carvalho, N.B. (2018, January 10\u201315). Dual-band high order modulation ambient backscatter. Proceedings of the 2018 IEEE\/MTT-S International Microwave Symposium - IMS, Philadelphia, PA, USA.","DOI":"10.1109\/MWSYM.2018.8439428"},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"2553","DOI":"10.1109\/TWC.2019.2904964","article-title":"Ambient Backscatter Communication Systems with MFSK Modulation","volume":"18","author":"Tao","year":"2019","journal-title":"IEEE Trans. Wirel. Commun."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"464","DOI":"10.1109\/JSAC.2018.2872383","article-title":"Switching frequency techniques for universal ambient backscatter networking","volume":"37","author":"Vougioukas","year":"2019","journal-title":"IEEE J. Sel. Areas Commun."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"1219","DOI":"10.1109\/TCOMM.2017.2772261","article-title":"Modulation in the air: Backscatter communication over ambient OFDM carrier","volume":"66","author":"Yang","year":"2018","journal-title":"IEEE Trans. Commun."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"3597","DOI":"10.1109\/TCOMM.2019.2899301","article-title":"Noncoherent backscatter communications over ambient OFDM signals","volume":"67","author":"ElMossallamy","year":"2019","journal-title":"IEEE Trans. Commun."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"4028","DOI":"10.1109\/TWC.2018.2819188","article-title":"Symbol Detection of Ambient Backscatter Systems with Manchester Coding","volume":"17","author":"Tao","year":"2018","journal-title":"IEEE Trans. Wirel. Commun."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"1191","DOI":"10.1109\/LWC.2019.2911500","article-title":"Cooperative Ambient Backscatter System: A Symbiotic Radio Paradigm for Passive IoT","volume":"8","author":"Guo","year":"2019","journal-title":"IEEE Wirel. Commun. Lett."},{"key":"ref_18","doi-asserted-by":"crossref","unstructured":"Chen, C., Wang, G., He, R., Gao, F., and Li, Z. (2018, January 12\u201314). Semi-blind detection of ambient backscatter signals from multiple-antenna tags. Proceedings of the 2018 24th Asia-Pacific Conference on Communications (APCC), Ningbo, China.","DOI":"10.1109\/APCC.2018.8633554"},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"1693","DOI":"10.1109\/TCOMM.2018.2879611","article-title":"Backscatter communications over correlated nakagami-m fading channels","volume":"67","author":"Zhang","year":"2019","journal-title":"IEEE Trans. Commun."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"765","DOI":"10.1109\/JIOT.2018.2856633","article-title":"Exploiting Multiple Antennas for Cognitive Ambient Backscatter Communication","volume":"6","author":"Guo","year":"2019","journal-title":"IEEE Internet Things J."},{"key":"ref_21","doi-asserted-by":"crossref","unstructured":"Duan, R., Jantti, R., ElMossallamy, M., Han, Z., and Pan, M. (2018, January 25\u201328). Multi-antenna receiver for ambient backscatter communication systems. Proceedings of the 2018 IEEE 19th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), Kalamata, Greece.","DOI":"10.1109\/SPAWC.2018.8446004"},{"key":"ref_22","doi-asserted-by":"crossref","unstructured":"Chen, C., Wang, G., Fan, L., Verde, F., and Guan, H. (2018, January 25\u201328). Detection of ambient backscatter signals from multiple-antenna tags. Proceedings of the 2018 IEEE 19th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), Kalamata, Greece.","DOI":"10.1109\/SPAWC.2018.8445952"},{"key":"ref_23","doi-asserted-by":"crossref","unstructured":"Tao, Q., Zhong, C., Chen, X., Wu, Q., and Zhang, Z. (2018, January 12\u201314). Ambient backscatter communication systems with multi-antenna reader. Proceedings of the 2018 24th Asia-Pacific Conference on Communications (APCC), Ningbo, China.","DOI":"10.1109\/APCC.2018.8633577"},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"3111","DOI":"10.1109\/TWC.2018.2806967","article-title":"Inference from Randomized Transmissions by Many Backscatter Sensors","volume":"17","author":"Zhu","year":"2018","journal-title":"IEEE Trans. Wirel. Commun."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"241","DOI":"10.1109\/TWC.2018.2879092","article-title":"Multiuser Wirelessly Powered Backscatter Communications: Nonlinearity, Waveform Design, and SINR-Energy Tradeoff","volume":"18","author":"Zawawi","year":"2019","journal-title":"IEEE Trans. Wirel. Commun."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"1146","DOI":"10.1109\/LWC.2019.2909199","article-title":"Secure Communications for Multi-tag Backscatter Systems","volume":"8","author":"Zhang","year":"2019","journal-title":"IEEE Wirel. Commun. Lett."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"6335","DOI":"10.1109\/TWC.2018.2859389","article-title":"Riding on the Primary: A New Spectrum Sharing Paradigm for Wireless-Powered IoT Devices","volume":"17","author":"Kang","year":"2018","journal-title":"IEEE Trans. Wirel. Commun."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"2015","DOI":"10.1109\/JIOT.2018.2820180","article-title":"Throughput Maximization for Hybrid Backscatter Assisted Cognitive Wireless Powered Radio Networks","volume":"5","author":"Lyu","year":"2018","journal-title":"IEEE Internet Things J."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"57399","DOI":"10.1109\/ACCESS.2019.2914001","article-title":"Cloud-Aided Cognitive Ambient Backscatter Wireless Sensor Networks","volume":"7","author":"Darsena","year":"2019","journal-title":"IEEE Access"},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"413","DOI":"10.1109\/TCCN.2019.2907090","article-title":"Opportunistic Ambient Backscatter Communication in RF-Powered Cognitive Radio Networks","volume":"5","author":"Kishore","year":"2019","journal-title":"IEEE Trans. Cogn. Commun. Netw."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"2612","DOI":"10.1109\/JIOT.2018.2872515","article-title":"Optimal resource allocation in full-duplex ambient backscatter communication networks for wireless-powered iot","volume":"6","author":"Yang","year":"2019","journal-title":"IEEE Internet of Things J."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"3222","DOI":"10.1109\/TWC.2019.2912203","article-title":"Resource allocation for full-duplex-enabled cognitive backscatter networks","volume":"18","author":"Xiao","year":"2019","journal-title":"IEEE Trans. Wirel. Commun."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"6837","DOI":"10.1109\/TWC.2018.2864741","article-title":"Design of non-orthogonal multiple access enhanced backscatter communication","volume":"17","author":"Guo","year":"2018","journal-title":"IEEE Trans. Wirel. Commun."},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"3187","DOI":"10.1109\/TCOMM.2018.2809613","article-title":"Backscatter Relay Communications Powered by Wireless Energy Beamforming","volume":"66","author":"Gong","year":"2018","journal-title":"IEEE Trans. Commun."},{"key":"ref_35","unstructured":"Jia, X., and Zhou, X. (2019). Performance Characterisation of Relaying Using Backscatter Devices. CoRR, Available online: http:\/\/arxiv.org\/abs\/1904.01323."},{"key":"ref_36","doi-asserted-by":"crossref","unstructured":"Yan, W., Li, L., He, G., Li, X., Gao, A., Zhang, H., and Han, Z. (June, January 31). Performance analysis of two-way relay system based on ambient backscatter. Proceedings of the 2018 13th IEEE Conference on Industrial Electronics and Applications (ICIEA), Wuhan, China.","DOI":"10.1109\/ICIEA.2018.8398010"},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"2860","DOI":"10.1109\/JIOT.2018.2875719","article-title":"Relay cooperation enhanced backscatter communication for internet-of-things","volume":"6","author":"Lyu","year":"2019","journal-title":"IEEE Internet Things J."},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"3198","DOI":"10.1109\/JIOT.2018.2837120","article-title":"Outage probability and throughput analysis of swipt enabled cognitive relay network with ambient backscatter","volume":"5","author":"Shah","year":"2018","journal-title":"IEEE Internet Things J."},{"key":"ref_39","doi-asserted-by":"crossref","unstructured":"Ruttik, K., Duan, R., J\u00e4ntti, R., and Han, Z. (2018, January 22\u201325). Does ambient backscatter communication need additional regulations?. Proceedings of the 2018 IEEE International Symposium on Dynamic Spectrum Access Networks (DySPAN), Seoul, Korea.","DOI":"10.1109\/DySPAN.2018.8610413"},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"34333","DOI":"10.1109\/ACCESS.2019.2904612","article-title":"Resource Allocation for Symbiotic Radio System with Fading Channels","volume":"7","author":"Guo","year":"2019","journal-title":"IEEE Access"},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"21597","DOI":"10.1109\/ACCESS.2019.2898474","article-title":"Full-Duplex Backscatter Communications in Symbiotic Radio Systems","volume":"7","author":"Long","year":"2019","journal-title":"IEEE Access"},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"20000","DOI":"10.1109\/ACCESS.2019.2897822","article-title":"Backscatter-NOMA: A Symbiotic System of Cellular and Internet-of-Things Networks","volume":"7","author":"Zhang","year":"2019","journal-title":"IEEE Access"},{"key":"ref_43","unstructured":"Li, Y., Jiang, M., Zhang, Q., and Qin, J. (2019). Secure Beamforming in MISO NOMA Backscatter Device Aided Symbiotic Radio Networks. CoRR, 1\u20134. Available online: http:\/\/arxiv.org\/abs\/1906.03410."},{"key":"ref_44","doi-asserted-by":"crossref","first-page":"7062","DOI":"10.1109\/TVT.2018.2826598","article-title":"Optimal Transmission Schemes for DF Relaying Networks Using SWIPT","volume":"67","author":"Ye","year":"2018","journal-title":"IEEE Trans. Veh. Technol."},{"key":"ref_45","doi-asserted-by":"crossref","first-page":"632","DOI":"10.1109\/LWC.2018.2890642","article-title":"User Cooperation in Wireless-Powered Backscatter Communication Networks","volume":"8","author":"Lyu","year":"2019","journal-title":"IEEE Wirel. Commun. Lett."},{"key":"ref_46","doi-asserted-by":"crossref","first-page":"3670","DOI":"10.1109\/TWC.2018.2812889","article-title":"Sensitive and Nonlinear Far-Field RF Energy Harvesting in Wireless Communications","volume":"17","author":"Alevizos","year":"2018","journal-title":"IEEE Trans. Wirel. Commun."},{"key":"ref_47","doi-asserted-by":"crossref","first-page":"3659","DOI":"10.1109\/TCOMM.2017.2710338","article-title":"Ambient Backscatter: A New Approach to Improve Network Performance for RF-Powered Cognitive Radio Networks","volume":"65","author":"Hoang","year":"2017","journal-title":"IEEE Trans. Commun."},{"key":"ref_48","doi-asserted-by":"crossref","first-page":"45288","DOI":"10.1109\/ACCESS.2018.2864967","article-title":"Hybrid Ambient Backscatter Communication Systems With Harvest-Then-Transmit Protocols","volume":"6","author":"Li","year":"2018","journal-title":"IEEE Access"},{"key":"ref_49","doi-asserted-by":"crossref","first-page":"6557","DOI":"10.1109\/TWC.2017.2725829","article-title":"Hybrid Backscatter Communication for Wireless-Powered Heterogeneous Networks","volume":"16","author":"Kim","year":"2017","journal-title":"IEEE Trans. Wirel. Commun."},{"key":"ref_50","doi-asserted-by":"crossref","first-page":"40068","DOI":"10.1109\/ACCESS.2019.2906928","article-title":"Time- and Power-Splitting Strategies for Ambient Backscatter System","volume":"7","author":"Ma","year":"2019","journal-title":"IEEE Access"},{"key":"ref_51","doi-asserted-by":"crossref","first-page":"3769","DOI":"10.1109\/JSAC.2016.2621360","article-title":"Exact performance analysis of ambient RF energy harvesting wireless sensor networks with Ginibre point process","volume":"34","author":"Kong","year":"2016","journal-title":"IEEE J. Sel. Areas Commun."},{"key":"ref_52","unstructured":"Olver, F.W.J., Olde Daalhuis, A.B., Lozier, D.W., Schneider, B.I., Boisvert, R.F., Clark, C.W., Miller, B.R., and Saunders, B.V. (2003). NIST Digital Library of Mathematical Functions. Release 1.0.23 of 2019-06-15. Ann. Math. Artif. Intell., 38, Available online: http:\/\/dlmf.nist.gov\/."},{"key":"ref_53","unstructured":"Gradshteyn, I.S., and Ryzhik, I.M. (2007). Table of Integrals, Series, and Products, Elsevier\/Academic Press. [7th ed.]."}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/20\/5\/1273\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T09:01:51Z","timestamp":1760173311000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/20\/5\/1273"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2020,2,26]]},"references-count":53,"journal-issue":{"issue":"5","published-online":{"date-parts":[[2020,3]]}},"alternative-id":["s20051273"],"URL":"https:\/\/doi.org\/10.3390\/s20051273","relation":{},"ISSN":["1424-8220"],"issn-type":[{"value":"1424-8220","type":"electronic"}],"subject":[],"published":{"date-parts":[[2020,2,26]]}}}