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A Relay Assisted Low PAPR Technique for SFBC-OFDM Transmission  

Kim, Young-Jin
Seo, Dae-Young
Im, Gi-Hong
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.34, no.9A, 2009 , pp. 649-655 More about this Journal
Abstract
The peak-to-average power ratio (PAPR) regrowth after the clipping is one main disadvantage of space-frequency block coded orthogonal frequency-division multiplexing (SFBC-OFDM). In this paper, we propose a relay assisted low PAPR technique for SFBC-OFDM transmission. For low PAPR at the source (mobile equipment), the relay processes SFBC encoding, which enables the source to transmit clipped single-input single-output (SISO)-OFDM signals without any increase of PAPR. Simulation results show that the clipped signal of proposed scheme is effectively recovered, and the proposed scheme achieves the diversity of SFBC without the complexity of multiple antennas at the source.
Keywords
OFDM; PAPR; clipping; SFBC; relay;
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