A Synchronization Technique for OFDM-Based Full Duplex Relays with Frequency-Domain Feedback Interference Canceller
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概要
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In a Decode and Forward (DF) type of an OFDM-based Full Duplex Relay (FDR), the frequency-domain approach is more efficient than the time-domain approach for feedback interference cancellation. However, Inter-Symbol Interference (ISI) and Inter-Carrier Interference (ICI) may occur due to timing mismatch between the feedback interference signal and the desired signal from the Base Station (BS). In this letter, the effects of a timing mismatch on synchronous types and asynchronous types of OFDM-based FDRs are investigated in uplink and downlink cases. A synchronization procedure and techniques for minimizing ISI and ICI in OFDM-based FDRs with a frequency-domain feedback interference canceller are proposed.
著者
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YOO Hyun-Il
School of Electrical and Electronic Engineering, Chung-Ang Univ.
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WOO Kyung-Soo
School of Electrical and Electronic Engineering, Chung-Ang Univ.
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PARK Chang-Hwan
School of Electrical and Electronic Engineering, Chung-Ang Univ.
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KIM Jaekwon
Yonsei Univ.
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JUNG Sungyoon
Telecommunication R&D Center, Samsung Electronics Co., LTD.
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CHO Yong-Soo
School of Electrical and Electronic Engineering, Chung-Ang Univ.
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Kim Jaekwon
Yonsei Univ. Wonju Kor
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