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ITS » Paper and Presentation » Telekomunikasi Multimedia S2
Posted by aprill@is.its.ac.id at 28/08/2015 22:25:32  •  554 Views


KARAKTERISASI KANAL KOMUNIKASI MOLEKULER MENGGUNAKAN BROWNIAN MOTION UNTUK JARINGAN KOMUNIKASI NANO

CHARACTERIZATION OF MOLECULAR COMMUNICATION CHANNEL USING BROWNIAN MOTION FOR NANONETWORK

Author :
RUSWIANSARI, MARETHA ( 2212203013 )




ABSTRAK

Pada aplikasi teknologi nano mesin nano adalah bagian paling fungsional yang dapat saling dihubungkan sebagai jaringan nano untuk meningkatkan kemampuan kinerja sebuah mesin nano. Komunikasi molekuler diusulkan untuk jaringan nano sebagai model komunikasi yang sesuai dengan ukuran transceiver nano. Komunikasi molekuler merepresentasikan informasi dalam bentuk molekulmolekul. Molekul-molekul bergerak bebas melalui medium fluida dari lokasi pengirim TN menuju penerima RN. Brownian motion digunakan sebagai model propagasi molekul tersebut pada kanal komunikasi molekuler berbasis difusi. Oleh karena perangkat nano secara fisik memiliki skala yang sama dengan molekul maka Brownian motion merupakan model yang realistis. Karakteristik kanal komunikasi molekuler ditentukan oleh Brownian motion tersebut dimana jarak antara TN dan RN akan mempengaruhi propagasi molekul pada medium fluida. Pada penelitian ini dilakukan simulasi model komunikasi molekuler dimana setiap simbol informasi dikirimkan dengan jumlah molekul yang berbeda. Parameter Brownian motion yaitu koefisien difusi serta jarak antara TN dan RN menunjukkan pengaruh medium terhadap konsentrasi molekul yang diterima oleh RN. Selain itu durasi interval pensinyalan juga mempengaruhi konsentrasi molekul yang diterima dimana intersymbol interference ISI dapat mendistorsi konsentrasi molekul tersebut. Konsentrasi molekul menentukan keberhasilan RN dalam menerjemahkan informasi. Sehingga kapasitas kanal dianalisa untuk mengetahui pengaruh parameter-parameter pengiriman sinyal molekuler. Karakteristik kanal komunikasi molekuler menunjukkan bahwa delay propagasi berbanding lurus dengan kuadrat jarak antara TN dan RN. Delay tersebut merupakan waktu konsentrasi molekul mencapai maksimum. Pengaruh ISI semakin besar bila delay lebih lama dari durasi interval pensinyalan. Hasil penelitian menunjukkan bahwa metode deteksi optimum dibutuhkan oleh RN karena sinyal yang dikirimkan oleh TN terdistorsi oleh ISI dan noise. Kapasitas kanal meningkat bila durasi interval pensinyalan lebih lama dari delay. Semakin banyak molekul yang diemisikan semakin kuat sinyal molekuler dan semakin rendah laju kesalahan bit. Sehingga komunikasi molekuler dapat optimal bila durasi interval pensinyalan dan jumlah molekul yang diemisikan disesuaikan dengan jarak antara TN dan RN pada aplikasi teknologi nano.


ABSTRACT

In applications of nanotechnology nanomachines are the basic functional unit which can be interconnected as a nanonetwork to increase the capabilities of single nanomachine. Nanonetwork requires a specific mechanism of nano-scale communication. Molecular communication is envisioned as a promising communication model for nanonetwork due to the size of nano-transceiver. Molecules will move randomly through the medium from transmitter nanodevice TN to receiver nanodevice RN location. Propagation of molecules in diffusionbased molecular communication channel is modeled as Brownian motion. Since nanodevices have same scale as individual molecules thus Brownian motion is physically realistic for these devices. Molecular communication channel characteristic is dependent on Brownian motion where propagation of molecules in fluid medium also depends on distance between TN and RN. Molecular communication model is simulated where each information symbol sent by different number of molecule. Parameters of Brownian motion i.e. diffusion coefficient and distance between TN and RN show the effect of medium to received molecule concentration by RN. Received molecule concentration also depends on duration of the interval signalling where it can be distorted by intersymbol interference ISI. Received molecule concentration characterize the successful delivery of molecular information. Therefore channel capacity is investigated to identify the effect of molecular signal transmission parameters. Characteristic of molecular communication channel show that propagation delay is proportional to the square of transmission distance. Delay propagation is time instant at which the molecule concentration reaches its maximum value. The effect of ISI increases if the delay is longer than duration of the signaling interval. Numerical results reveal that optimum detection method is required in order to recover the transmitted information distorted by both ISI and noise. Channel capacity increases if duration of the signaling interval is longer than the delay. The power of molecular signal increases as number of the emitted molecule increases and can decrease the bit error rate. Thus to achieve the optimal molecular communication signalling interval and number of the emitted molecules should be appropriated with distance between TN and RN in applications of nanotechnology.



Keywordskomunikasi molekuler; kanal difusi; karakteristik kanal; jaringan nano
 
Subject:  Komunikasi molekul (telekomunikasi); nanoteknologi
Contributor
  1. Dr. Ir. Wirawan, DEA.
Date Create: 28/08/2015
Type: Text
Format: pdf
Language: Indonesian
Identifier: ITS-paper-22121150007823
Collection ID: 22121150007823
Call Number: RTE 620.5 Rus k


Source
Paper and Presentations, Electrical Engineering, RTE 620.5 Rus k, 2015

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