Current Result Document :
| 한글제목(Korean Title) |
MIMO-OFDM 시스템 기반 가상적 상향링크 다중사용자 환경에서의 파일럿 오버헤드와 다중화 이득의 트레이드오프 |
| 영문제목(English Title) |
A Tradeoff of Multiplexing Gain and Pilot Overhead in Multi-User OFDM Virtual MIMO Uplink Systems |
| 저자(Author) |
란롱
김요한
양장훈
김동구
Rong Ran
Yohan Kim
Janghoon Yang
Dongku Kim
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| 원문수록처(Citation) |
VOL 18 NO. 01 PP. IIIC ~ 0003 (2008. 04) |
한글내용
(Korean Abstract) |
In this paper, we derive the optimum number of users which can maximize the information theoretic sum capacity in multiuser OFDM virtual MIMO uplink system. In which, there are multiple antennas at the base station and a number of users with single transmit antenna for each user. Pilot-assisted channel state estimation is assumed on block fading channel and time-varying fading channel. We analyze the tradeoff between the multiplex gain and pilot overhead especially in low SNR regime and conclude that the optimum number of users is min(Nr,LT/2) and approximately equal to min(Nr,⌊√(LT+1)+1⌋)in frequency nonselective block fading channel and time varying fading channel respectively, assuming the same pilot and signal power
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영문내용
(English Abstract) |
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