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Impact of Carrier Frequency Offset on Received SNR in Dual-Hop OFDM Systems with a Fixed Relay
- Authors
- Lee, In-Ho; Kim, Dongwoo
- Issue Date
- Aug-2009
- Publisher
- Oxford University Press
- Keywords
- carrier frequency offset; dual-hop OFDM system; average SNR; fired relay; frequency-selective fading
- Citation
- IEICE Transactions on Communications, v.E92B, no.8, pp 2755 - 2758
- Pages
- 4
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEICE Transactions on Communications
- Volume
- E92B
- Number
- 8
- Start Page
- 2755
- End Page
- 2758
- ISSN
- 0916-8516
1745-1345
- Abstract
- 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.
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Related Researcher
- Kim, Dong woo
- ERICA 공학대학 (SCHOOL OF ELECTRICAL ENGINEERING)