Non-Coherent Detection for Diffusive Molecular Communication Systems

Beitrag in einer Fachzeitschrift

Details zur Publikation

Autorinnen und Autoren: Jamali Kooshkghazi V, Farsad N, Schober R, Goldsmith AJ
Zeitschrift: IEEE Transactions on Communications
Jahr der Veröffentlichung: 2018
Band: 66
Heftnummer: 6
Seitenbereich: 2515 - 2531
ISSN: 0090-6778
Sprache: Deutsch


We study non-coherent detection schemes for molecular communication (MC) systems with negligible inter-symbol interference that do not require knowledge of the channel state information (CSI). In particular, we first derive the optimal maximum likelihood (ML) multiple-symbol (MS) detector for MC systems. As a special case of the optimal MS detector, we show that the optimal ML symbol-by-symbol (SS) detector can be equivalently written in the form of a threshold-based detector, where the optimal decision threshold is constant and depends only on the statistics of the MC channel. The main challenge of the MS detector is the complexity associated with the calculation of the optimal detection metric. To overcome this issue, we propose an approximate MS detection metric that can be expressed in closed form. In addition, we develop a non-coherent decision-feedback detector, which introduces a lower detection delay compared with the optimal MS detector, and a suboptimal blind detector, which has a significantly lower complexity than the optimal MS detector. Finally, we derive analytical expressions for the bit error rate (BER) of the optimal SS detector, as well as upper and lower bounds for the BER of the optimal MS detector. Simulation results confirm the analysis and reveal the effectiveness of the proposed optimal and suboptimal detection schemes compared with the benchmark scheme that assumes perfect CSI knowledge, particularly, when the number of observations used for detection is sufficiently large. Simulation results are also presented that show the performance of the proposed detectors, when inter-symbol interference is non-negligible.

FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Jamali Kooshkghazi, Vahid Dr.-Ing.
Lehrstuhl für Digitale Übertragung
Schober, Robert Prof. Dr.-Ing.
Lehrstuhl für Digitale Übertragung

Einrichtungen weiterer Autorinnen und Autoren

Stanford University


Jamali Kooshkghazi, V., Farsad, N., Schober, R., & Goldsmith, A.J. (2018). Non-Coherent Detection for Diffusive Molecular Communication Systems. IEEE Transactions on Communications, 66(6), 2515 - 2531.

Jamali Kooshkghazi, Vahid, et al. "Non-Coherent Detection for Diffusive Molecular Communication Systems." IEEE Transactions on Communications 66.6 (2018): 2515 - 2531.


Zuletzt aktualisiert 2019-11-08 um 12:10