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Jorge Torres Gómez, Jennifer Simonjan and Falko Dressler, "Low-Complex Synchronization Method for Intra-Body Links in the Terahertz Band," IEEE Journal on Selected Areas in Communications, May 2024. (online first)


Precision medicine applications supported by nanotechnologies enforce designing a communication interface between in-body nanosensors and external gateways. Such a communication interface will enable both a data and a control channel between nanodevices operating within the human body and external control units. In this direction, recent literature focuses on deriving analytic channel models for intra-body links through the human tissues, including the analysis of achievable communication capacities in the terahertz band. A yet missing component, however, is a synchronization module to implement communication schemes in the intra-body link. Such synchronization module will ultimately bound the communication performance regarding the perceived signal to noise ratio ( SNR) and bit error rate (BER ), for instance. This paper contributes to the state of the art in two directions: (a) evaluating the bounds on the communication performance with the Cramer-Rao lower bound (CRLB ) for the synchronization symbol timing offset (STO) and (b) designing a low-complex mechanism to synchronize communication. This analysis considers a communication link between external gateways located on the skin and nanosensor devices flowing in the human vessels. Using envelope and slope detectors, we devise a low-complex solution that relies on the received signal strength ( RSS) metric to trigger data emissions. The method estimates the peak of the received RSS metric to ignite communication in the most favorable location, i.e., when the nanosensor is located at the shortest distance in the communication range with external gateways. Our findings illustrate the feasibility of such a low-complex synchronization method. Performance illustrates a BER less than 1×10−5 for those nanosensors traveling close to the upper vessel wall.

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Jorge Torres Gómez
Jennifer Simonjan
Falko Dressler

BibTeX reference

    author = {Torres G{\'{o}}mez, Jorge and Simonjan, Jennifer and Dressler, Falko},
    doi = {10.1109/JSAC.2024.3399255},
    note = {to appear},
    title = {{Low-Complex Synchronization Method for Intra-Body Links in the Terahertz Band}},
    journal = {IEEE Journal on Selected Areas in Communications},
    issn = {0733-8716},
    publisher = {IEEE},
    month = {5},
    year = {2024},

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