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J. Electromagn. Eng. Sci > Volume 10(2); 2010 > Article
Journal of the Korean Institute of Electromagnetic and Science 2010;10(2):50-55.
DOI: https://doi.org/10.5515/JKIEES.2010.10.2.050   
Joint Subcarrier Matching, Power Allocation and Bit Loading in OFDM Dual-Hop Systems
Hyung-Yun Kong, Jin-Hee Lee
Department of Electronic Engineering, University of Ulsan
Abstract
Orthogonal Frequency Division Multiplexing(OFDM) dual-hop systems can take full advantages of the techniques of both multi-hop communication and OFDM. To achievethis end, we propose a joint subcarrier matching, power allocation and bit loading algorithm operating under a total power constraint and the same Bit Error Rate(BER) threshold over all subcarriers. Simulation results demonstrated system throughput improvement compared to single-hop systems and dual-hop systems with different bit loading algorithms for each relay position, power constraint, and required BER.
Key words: Multi-Hop, Subcarrier Matching, Power Allocation, Bit Loading, OFDM
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