{"title":"Exploring Joint Voltage and Impedance Modulation in Wired Networks","authors":"A. Tonello, Marco De Piante","doi":"10.1109/ISPLC48789.2020.9115409","DOIUrl":"https://doi.org/10.1109/ISPLC48789.2020.9115409","url":null,"abstract":"Conventionally, transmission of information in wired networks, as power line communication ones, is realized by modulating the voltage source at the transmitter side assuming a constant source impedance. If the impedance at the source is changed, this will induce a change of the line impedance at the receiver node. If such a change is measurable at the receiver node, then one may think to implement joint modulation of the voltage and impedance at the source, therefore transforming the wired network into two parallel communication channels. This paper investigates the principles behind this idea by deriving the input/output voltage/impedance relations, and possible transmitter/receiver architectures. A first architecture comprises only impedance modulation at the transmitter side with an impedance meter at the receiver side. Another architecture comprises joint voltage and impedance modulation with two possible receivers: a) a received voltage meter together with an impedance meter, or b) a voltage meter with a switched impedance receiver frontend. Numerical results are reported in terms of symbol error rate. They show that the approach has potentiality and opens the door to further investigations.","PeriodicalId":403692,"journal":{"name":"2020 IEEE International Symposium on Power Line Communications and its Applications (ISPLC)","volume":"390 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134504380","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Non Intrusive Network Impedance Estimation with State of the Art PLC Modems","authors":"Davide Righini, A. Tonello","doi":"10.1109/ISPLC48789.2020.9115400","DOIUrl":"https://doi.org/10.1109/ISPLC48789.2020.9115400","url":null,"abstract":"The knowledge of the Power Line (PL) network impedance is relevant to improve the performance of the communication system and enable smart grid monitoring and diagnostics. This paper introduces a new method to estimate the PL grid impedance exploiting only voltage measurements and changes of the load at the receiver side of the Power Line Communication Modem (PLM). The proposed estimation technique is called Non Intrusive (NI) because does not require signals to be injected at the measurement port. But signals originated from a remote node are exploited for the impedance estimation. The exploitation of PLMs not only as communication devices but also to sense the Power Line Network (PLN) parameters, will promote new applications in the domain of PL diagnostics and allow better PL grid monitoring. The method was evaluated through simulations and real measurements. The proposed approach applies to both single and multi-conductor technologies at different frequency bands.","PeriodicalId":403692,"journal":{"name":"2020 IEEE International Symposium on Power Line Communications and its Applications (ISPLC)","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116638862","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}