(A) low complexity relay allocation algorithm in multi-user cooperative systems = 다중 사용자를 가지는 협동 통신 시스템에서 연산량을 줄인 중계기 할당 기법

In this thesis, a new relay allocation scheme for the multi-user cooperative communication system with amplify-and-forward (AF) relays is presented. It has formulated an optimization problem for an adaptive relay and power allocation scheme that maximizes system capacity while guaranteeing QoS of each user. Since the optimization problem is no numerical optimal relay allocation algorithm, we propose sub-optimal relay allocation algorithm in this problem. We propose new relay allocation algorithms with two ways. The first scheme we proposed is a simple sub-optimal relay allocation with knowing full channel information. We consider more practical systems because knowing the full channel information is not realistic. The second scheme we proposed is a relay allocation using space-time coding with partial channel information. Our scheme is proper to multi-user cooperative systems with amplify-and-forward relays and has advantages of reducing complexity and increasing capacity as well.
Advisors
Park, Dong-Joresearcher박동조researcher
Publisher
한국과학기술원
Issue Date
2009
Identifier
308863/325007  / 020073569
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 전기및전자공학전공, 2009.2, [ vii, 72 p. ]

Keywords

AF relay; multi-user; relay allocation; space-time coding; 증폭 후 전송 중계기; 다중 사용자; 중계기 할당; 시공간 부호화; AF relay; multi-user; relay allocation; space-time coding; 증폭 후 전송 중계기; 다중 사용자; 중계기 할당; 시공간 부호화

URI
http://hdl.handle.net/10203/38742
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=308863&flag=t
Appears in Collection
EE-Theses_Master(석사논문)
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