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"Efisiensi penggunaan sumber daya spektrum frekuensi yang terbatas merupakan target utama dari sistem komunikasi nirkabel. Keterbatasan spektrum frekuensi ini, telah mendorong para peneliti untuk mengembangkan komunikasi nirkabel full-duplex. Pada penelitian ini penulis mengusulkan skema optimasi penggunaan daya pada kanal MIMO full-duplex yang telah dilengkapi dengan teknik selfinterference cancellation pada domain propagasi.Pada penelitian ini diturunkan dan dianalisis persamaan mencari daya optimum dari sebuah kanal MIMO fullduplex yang akan menghasilkan kapasitas maksimum dengan menggunakan metode optimasi konveks. Berdasarkan hasil perhitungan terhadap kanal yang telah dioptimasi dapat dibuktikan bahwa kapasitas kanal meningkat sebesar 9 % pada penggunaan daya total sebesar 4 dB dan N=4 dibandingkan kapasitas kanal tanpa optimasi.

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Improving spectral efficiency driven by the limited frequency resources is a key target of the wireless communication system. The limitation of the frequency spectrum has led researchers to develop a full-duplex wireless communication. In this research, author proposes a power optimization scheme of full-duplex MIMO channel that has been equipped with self-interference cancellation techniques in the propagation domain.

In this research, by using convex optimization method, the expression of the optimum power scheme to achieve the maximum capacity of full-duplex MIMO channel is derived and analyzed. Calculation result shows that the capacity of the optimized channel increase 9 % at the total power 4 dB and N=4 compare with channel without optimization."

"We explore full-duplex technique in wireless communication particularly for relay networks. We consider the relay to operate in full-duplex, which transmission and reception are conducted in the same channel. We investigate potential benefits of full-duplex technique in relay networks, which uses multiple antennas for transmission and reception combined with Amplify-Forward (AF) scenario. We study the effects of multiple antennas in terms of relay capacity. We derive an ergodic capacity expression using Tracy-Widom distribution. Using Singular Value Decomposition (SVD) and perfect Channel State Information (CSI), we investigate three scenarios: First, we consider the relay to have antenna larger than that of both source and destination. Second, we consider both relay and destination to have antenna larger than that of source. Third, we consider both relay and source to have antenna larger than that of destination. We show the results that the capacity of relay with full-duplex technique is almost twice the capacity of half-duplex. We show that increasing the number of destination antennas is not help much when one of source antennas is small. Moreover, the capacity decreases due to channel hardening effect, when the number of destination antennas is larger than that of source."

"Teknologi Full Duplex merupakan teknologi yang saat ini sedang berkembang karena mampu untuk meningkatkan transfer rate dan mendapatkan efisiensi spektral yang tinggi. Teknologi Full Duplex memungkinkan untuk menggunakan pita frekuensi yang sama untuk melakukan pengiriman sinyal informasi dan penerimaan sinyal informasi dalam waktu yang bersamaan, namun mode ini memiliki permasalahan yaitu, adanya self-interference antara antena pengirim dan penerima, yang mengakibatkan sinyal yang diterima pada antena penerima tidak hanya sinyal informasi dari sumber namun juga sinyal pengganggu yang berasal dari antena pengirim self-interference.Pada tugas akhir ini, saya menganalisa Probabilitas Sukses jaringan Full-Duplex dimana pada infrastruktur jaringan Full-Duplex disertakan relai. Relai disini berfungsi sebagai penguat sinyal, guna meminimalisir efek dari self-interference. Langkah awal penulis adalah memodelkan jaringan FullDuplex Relaying beserta dengan parameter-parameter yang mempengaruhinya. Kemudian memformulakan parameter tersebut ke dalam persamaan matematis menggunakan teknik Rayleigh Fading Assumption.Hasil dari formula ini kemudian dijabarkan ke dalam bentuk Probabilitas Sukses dengan batasan parameter pembanding threshold ? , noise n , dan jarak R . Langkah berikutnya memverifikasikan formula ke dalam simulasi Monte Carlo. Perbedaan metode Probabilitas Sukses dengan Monte Carlo terletak pada 2 hal, yang pertama pada Monte Carlo parameter random akan diubah-ubah nilainya, dalam hal ini adalah noise. Perbedaan kedua pada metode Monte Carlo dilakukan pengulangan simulasi, hal ini mengakibatkan grafik yang dihasilkan lebih presisi dibandingkan metode Probabilitas Sukses biasa. Dalam skripsi ini, penulis mensimulasikan metode Monte Carlo dengan pengulangan simulasi sebanyak 5000 kali.Hasilnya, penulis mendapatkan grafik probabilitas sukses dengan pola eksponensial, sesuai dengan persamaan matematis. Dimana probabilitas maksimum jaringan relai full-duple x nirkabel sebesar 0,7 pada saat threshold atau ? bernilai 0 dB.

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Full Duplex technology is a technology that is currently being developed for being able to increase the transfer rate and obtain high spectral efficiency. Full Duplex allows to use the same frequency band to perform signal transmission information and reception information signal at the same time, but this mode has a problem, namely, the self interference between the transmitting antenna and receiver, resulting in the received signal at the receiving antenna is not only signals from a source of information but also a bully signal originating from the transmitting antenna selfinterference.

In this report, I analyze success probability of Full Duplex network where the network infrastructure Full Duplex included relai. Relai here serves as a signal amplifier, in order to minimize the effects of self interference. The initial step is to model the Full Duplex Relaying network along with the parameters that influence it. Then formulated these parameters into a mathematical equation using the Rayleigh Fading Assumption technique.

The results of this formula are further described in the form Probability of Success with restrictions comparator threshold parameters, noise n, and distance R . The next step is describe the formula into Monte Carlo simulation. Difference methods between Monte Carlo and probability of success lies in two things, the first is in Monte Carlo random parameter value will be changed, in this case the noise. The second difference in the method of Monte Carlo simulation is there are repetition, this has resulted in the resulting graph is more precise than the usual method of Success Probability.

In this report, the authors simulate Monte Carlo method to simulate as much as 5000 times repetition.The result is, author get a success probability graph with exponential line, verified the formula. Where maximum success probability value of full duplex relaying wireless network is 0,7 when threshold or 0 dB. "