Impact of Carrier Frequency Offset on Received SNR in Dual-Hop OFDM Systems with a Fixed Relay
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概要
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In this letter, we present the impact of carrier frequency offset (CFO) in dual-hop orthogonal frequency division multiplexing (OFDM) systems with a fixed relay for frequency-selective fading channels. Approximate expressions of the average signal-to-noise ratios (SNRs) for both downlink and uplink are obtained and validated by simulations. It is shown that dual-hop systems have slightly worse average SNR degradation than single-hop systems. We also show that the average SNR degradation due to the CFO varies according to the gap between average received SNRs for the first and the second hop.
- （社）電子情報通信学会の論文
- 2009-08-01
著者
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LEE In-Ho
Department of Electrical Engineering and Computer Science, Hanyang University
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KIM Dongwoo
Department of Electrical Engineering and Computer Science, Hanyang University
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Lee In-ho
Department Of Electrical Engineering And Computer Science Hanyang University
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Kim Dongwoo
Department Of Electrical Engineering And Computer Science Hanyang University
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Lee In‐ho
Hanyang Univ. Ansan Kor
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Kim Dongwoo
Department of Applied Physics, Korea University, Seoul 136-713, Korea
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