This paper presents cell configuration strategies for orthogonal frequency division multiple access (OFDMA) based hierarchical cellular systems (HCS). We consider two cases: the symmetric case that HCS is used to extend the data rate coverage and the asymmetric case that HCS is applied to cover the hot spot. We formulate the cell configuration strategy problem with spectral reuse planning and channel allocation constraints, and suggest solutions for each case. The numerical results show that HCS can improve the system stability in the symmetric case and enhance the system performance about two times rather than that of the conventional cellular system, when the hot spot is created at the macro-cell edge in the asymmetric case. In addition, we describe that the co-channel interference from macro-cell base stations (BSs) are the dominant factor of system performance, but that from microcell, BSs can be negligible.
목차
Abstract 1. Introduction 2. System Model and Problem Formulation 2.1. System Model 2.2. Problem Formulation 3. Distributed Cell Configuration Strategy 3.1. Symmetric Case 3.2. Asymmetric Case 4. Simulation Results 4.1. System Throughput 4.2. Optimum Spectral Reuse Planning 5. Conclusions Acknowledgements References
키워드
Cell configurationradio resource allocationhierarchical cellular systemorthogonal frequency division multiple accessco-channel interferencequality of service
저자
Eunsung Oh [ Department of Electronics Engineering, Hanseo University ]
보안공학연구지원센터(IJSEIA) [Science & Engineering Research Support Center, Republic of Korea(IJSEIA)]
설립연도
2006
분야
공학>컴퓨터학
소개
1. 보안공학에 대한 각종 조사 및 연구
2. 보안공학에 대한 응용기술 연구 및 발표
3. 보안공학에 관한 각종 학술 발표회 및 전시회 개최
4. 보안공학 기술의 상호 협조 및 정보교환
5. 보안공학에 관한 표준화 사업 및 규격의 제정
6. 보안공학에 관한 산학연 협동의 증진
7. 국제적 학술 교류 및 기술 협력
8. 보안공학에 관한 논문지 발간
9. 기타 본 회 목적 달성에 필요한 사업
간행물
간행물명
International Journal of Software Engineering and Its Applications
간기
월간
pISSN
1738-9984
수록기간
2008~2016
등재여부
SCOPUS
십진분류
KDC 505DDC 605
이 권호 내 다른 논문 / International Journal of Software Engineering and Its Applications Vol.9 No.9