{"id":1375,"date":"2010-07-07T09:30:05","date_gmt":"2010-07-07T13:30:05","guid":{"rendered":"https:\/\/wpmu2.mit.local\/?p=1375"},"modified":"2010-07-22T13:44:08","modified_gmt":"2010-07-22T17:44:08","slug":"wireless-body-area-networks-using-body-coupled-communication","status":"publish","type":"post","link":"https:\/\/wpmu2.mit.local\/wireless-body-area-networks-using-body-coupled-communication\/","title":{"rendered":"Wireless Body-area Networks Using Body-coupled Communication"},"content":{"rendered":"
\"Figure<\/a>

Figure 1: (a) The electric field lines made between the transmitter, receiver, body, and environment. (b) The circuit diagram for (a); the red capacitors are parasitic and degrade functionality.<\/p><\/div>\n

Body-coupled communication (BCC) was first implemented at MIT as a means to communicate between multiple devices around the body, forming a body-area network (BAN) [1<\/a>]<\/sup>.\u00a0 Two-node BCC works by forming two capacitive links between a transmitter and a receiver, creating a circuit loop.\u00a0 One of these links is created by both the transmitter and receiver capacitively coupling to the body, effectively using the body as a low-resistance channel between the respective capacitors.\u00a0 The second link is created by both the transmitter and receiver coupling to the environment, or \u201cearth ground,\u201d and using it as a low-resistance channel.\u00a0 Figure 1 shows how the transmitter and receivers couple to the body and environment as well as parasitic capacitances.\u00a0 Larger BANs can be made by coupling additional nodes to both the body and the environment.<\/p>\n

The attractiveness of using BCC as a BAN is that it requires potentially lower transmit power than traditional radio for equal bit error rates.\u00a0 Also, as no appreciable power is radiated away from the body, this scheme does not create interference for other BCC networks on other bodies, making the bandwidth reusable.\u00a0 The lack of radiated power also makes BCC inherently more secure than broadcast radio, as it is harder to intercept the transmissions.\u00a0 Feasibility of BCC transceivers has been shown in [2<\/a>]<\/sup> and [3<\/a>]<\/sup>.\u00a0 Our work will thoroughly characterize the BCC channel, develop a robust network scheme, and fabricate the solution.<\/p>\n

\r\nReferences
  1. T.G. Zimmerman, \u201cPersonal Area Networks (PAN): Near-field intrabody communication,\u201d M.S. thesis, MIT Media Laboratory, 1995. [↩<\/a>]<\/li>
  2. S.-J. Song, N. Cho, S. Kim et al., \u201cA 0.9V 2.6mW Body-Coupled Scalable PHY Transceiver for Body Sensor Applications,\u201d ISSCC Dig. Tech. Papers,<\/em> pp. 366-367, Feb. 2007. [↩<\/a>]<\/li>
  3. A. Fazzi et al., \u201cA 2.75mW wideband correlation-based transceiver for body-coupled communication,\u201d ISSCC Dig. Tech. Papers,<\/em> pp. 204-205, Feb. 2009. [↩<\/a>]<\/li><\/ol><\/div>","protected":false},"excerpt":{"rendered":"

    Body-coupled communication (BCC) was first implemented at MIT as a means to communicate between multiple devices around the body, forming…<\/p>\n<\/div>","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[27],"tags":[4060,67,4142],"_links":{"self":[{"href":"https:\/\/wpmu2.mit.local\/wp-json\/wp\/v2\/posts\/1375"}],"collection":[{"href":"https:\/\/wpmu2.mit.local\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wpmu2.mit.local\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wpmu2.mit.local\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/wpmu2.mit.local\/wp-json\/wp\/v2\/comments?post=1375"}],"version-history":[{"count":3,"href":"https:\/\/wpmu2.mit.local\/wp-json\/wp\/v2\/posts\/1375\/revisions"}],"predecessor-version":[{"id":2241,"href":"https:\/\/wpmu2.mit.local\/wp-json\/wp\/v2\/posts\/1375\/revisions\/2241"}],"wp:attachment":[{"href":"https:\/\/wpmu2.mit.local\/wp-json\/wp\/v2\/media?parent=1375"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wpmu2.mit.local\/wp-json\/wp\/v2\/categories?post=1375"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wpmu2.mit.local\/wp-json\/wp\/v2\/tags?post=1375"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}