Performance analysis of an orthogonal frequency and code hopping multiplexing~(OFCHM) system = 직교 주파수 및 부호 도약 다중화 방식의 성능 분석에 관한 연구

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Beyond-3G wireless communication systems should support various types of packet traffic with both low/medium and high rates. However, scheduling-based resource allocation schemes and dedicated resource allocation/multiplexing schemes are inadequate for accommodating low/medium rate services due to a rate mismatch, a large signaling overhead, and an inefficient usage of radio resources. Therefore, a new orthogonal frequency and code hopping multiplexing~(OFCHM) scheme for downlink multiplexing is proposed to provide efficient support of packet traffic with low and medium data rates in a spread OFDM environment. The performance of the proposed scheme is evaluated in terms of the statistical multiplexing gain, the block error rate, and the overall capacity by using both an analytical approach and simulation. A comparison study with the VSF-OFCDM system through system-level simulations is also performed. Two synergy/perforation control schemes for M-QAM are proposed, and the multi-rate transmission is generalized in OFCHM. The proposed synergy/perforation control schemes are evaluated through an analytical approach and simulations, and are compared to the previous scheme for QPSK modulation. The resource-collision probability is analyzed in the generalized multi-rate environment, and the analytical results are compared with simulation ones.
Advisors
Sung, Dan-Keunresearcher성단근researcher
Description
한국과학기술원 : 전기및전자공학전공,
Publisher
한국과학기술원
Issue Date
2006
Identifier
258151/325007  / 020015106
Language
eng
Description

학위논문(박사) - 한국과학기술원 : 전기및전자공학전공, 2006.8, [ viii, 140 p. ]

Keywords

multi-rate; QAM; OFDM; resource hopping multiplexing; multiplexing; hopping; variable spreading gain; 시스템 시뮬레이션; 다중 전송률 전송; 직교 주파수 분할; 자원 도약 다중화; 다중화; 도약; system-level simulation; VSF-OFCDM

URI
http://hdl.handle.net/10203/35382
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=258151&flag=dissertation
Appears in Collection
EE-Theses_Ph.D.(박사논문)
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