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학술지 Sequence Hopping Cell Search Scheme for OFDM Cellular Systems
Cited 28 time in scopus Download 3 time Share share facebook twitter linkedin kakaostory
저자
김일규, 한영남, 김영훈, 방승찬
발행일
200805
출처
IEEE Transactions on Wireless Communications, v.7 no.5, pp.1483-1489
ISSN
1536-1276
출판사
IEEE
DOI
https://dx.doi.org/10.1109/TWC.2008.060992
협약과제
08MR5200, 3GPP LTE 단말모뎀 칩셋 개발, 김일규
초록
OFDM has been a widely accepted technology in high rate and multimedia data service systems, such as 3G Long Term Evolution (3G LTE) system in the 3rd Generation Partnership Project (3GPP). In this paper, we propose a new cell search scheme based on the frequency domain sequence hopping of synchronization channel symbols. The assigned hopping pattern provides frame boundary information as well as cell identification (cell ID) to a mobile station (MS). The proposed synchronization channel structure allows MS to acquire OFDM symbol/frame timing, cell ID and frequency offset estimates in the initial cell search stage. The cell search in MS is composed of 2 steps; OFDM symbol synchronization step, frequency offset correction and cell ID/frame boundary detection step. We evaluate the performance of proposed scheme under various channel environments. The impacts of multipath fading, vehicular speed and frequency offset on the performance are investigated. We also compare the performance of proposed scheme with 3G LTE cell search scheme. © 2008 IEEE.
키워드
3G long term evolution, Cell search, OFDM, Sequence hopping, Synchronization
KSP 제안 키워드
3G LTE, 3rd generation partnership project(3GPP), Cell identification, Cell search, Cellular system, Channel structure, Domain sequence, High rate, Long term Evolution(LTE), Mobile station(MS), Multimedia data