OFDM subcarrier를 이용한 주파수 도메인에서의 채널획득경쟁기법

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dc.description학위논문(석사)--아주대학교 일반대학원 :전자공학과,2019. 2-
dc.description.tableofcontents1 Introduction 1 1.1 Motivation 1 1.2 Background and related work 2 1.3 Problem statement 7 1.4 Contribution 8 1.5 Overview 9 2 System Model 10 3 Proposed Channel Contention Scheme in Frequency Domain 12 3.1 Introduction 12 3.2 Round 1 12 3.3 Round 2 17 3.4 Example of the proposed scheme 17 4 Performance Evaluation 21 4.1 Introduction 21 4.2 Numerical Analysis 21 4.3 Simulation 23 5 Conclusion and Future work 40 5.1 Conclusion 40 5.2 Future work 40-
dc.publisherThe Graduate School, Ajou University-
dc.rights아주대학교 논문은 저작권에 의해 보호받습니다.-
dc.titleOFDM subcarrier를 이용한 주파수 도메인에서의 채널획득경쟁기법-
dc.contributor.affiliation아주대학교 일반대학원-
dc.contributor.department일반대학원 전자공학과-
dc.date.awarded2019. 2-
dc.description.alternativeAbstractThe main theme of this dissertation is the design of channel contention scheme in frequency domain using orthogonal frequency-division multiplexing (OFDM) subcarrier. It focuses on reducing the overhead of channel contention in time domain. It also focuses on increasing the number of stations (STAs) which transmit a data with single channel contention. The proposed channel contention scheme consists of two rounds. In the first round, STAs and an access point (AP), which have a data to transmit, select a random subcarrier number. In the second round, the AP broadcasts the information of each subcarrier. In the first round, a novel collision detection method is proposed. Since the first round symbol has no information about STA identification (ID), the proposed method should be used. It can detect the collision in subcarrier with high probability. Mathematical analysis and simulation using MATLAB are used to evaluate the performance of proposed scheme. As a result of the analysis, it is confirmed that the results of the mathematical analysis are very closed to those of simbultion. Specially, the performance of the proposed scheme is improved as the number of subcarriers, data rate, and bits per symbol increase.-
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Graduate School of Ajou University > Department of Electronic Engineering > 3. Theses(Master)
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