(A) SIR to channel-quality indicator (CQI) mapping method for hsdpa systems with channel equalization = 채널 등화기가 있는 HSDPA 시스템에서 SIR과 Channel quality indicator (CQI) 의 사상방법에 대한 연구

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To support very high data rate services that require higher system capacity, the High Speed Downlink Packet Access (HSDPA) was proposed in the UMTS standard. One of key techniques supporting the HSDPA services is the Adaptive Modulation and Coding (AMC) in which the modulation scheme and the coding rate are adaptively changed to match the current channel condition reported by the user equipment (UE). Therefore, the mapping relationship between the Channel Quality Indicator (CQI) and Signal to Interference Ratio (SIR) is closely related to the accuracy of AMC and the performance of HSDPA. This paper proposes a SIR to CQI mapping method that satisfies the 3GPP requirements. In order to verify the performance of the proposed mapping method, we implemented the link-level simulator which is composed of all the physical layer blocks depicted in the 3GPP standard. With the proposed mapping method, we show that UE can report the exact channel condition and the system can yield performance exceeding the requirements in the 3GPP technical specification.
Advisors
Lee, Hwang-Sooresearcher이황수researcher
Description
한국과학기술원 : 전기및전자공학전공,
Publisher
한국과학기술원
Issue Date
2006
Identifier
260062/325007  / 020043929
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 전기및전자공학전공, 2006.8, [ viii, 44 p. ]

Keywords

HARQ; CQI; AMC; HSDPA; 신호대 간섭비; 고속하향패킷접속; 채널상태정보; 적응변조; SIR

URI
http://hdl.handle.net/10203/38408
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=260062&flag=dissertation
Appears in Collection
EE-Theses_Master(석사논문)
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