Symbol error rate on fading self-interference channel in full-duplex

Fei Wu (), Donglin Liu and Youxi Tang
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Fei Wu: UESTC
Donglin Liu: UESTC
Youxi Tang: UESTC

Telecommunication Systems: Modelling, Analysis, Design and Management, 2018, vol. 67, issue 3, No 8, 477-483

Abstract: Abstract In-band full-duplex (FD) is being considered as a promising technology for the next generation wireless communication systems. In this paper, the performance of orthogonal frequency division multiplexing (OFDM) modulation system with different symbol duration and the code spreading system with different spreading sequence lengths under time-varying self-interference (SI) channel in FD mode is investigated respectively. Typically, the SI channel is estimated during the SI cancellation duration and used for SI suppression in the whole data transmission duration. First, the expressions of the residual SI power during the data transmission duration are derived under the classical, the uniform, and the two-way Doppler SI channels. Second, the signal-to-interference-and-noise-ratio after the SI mitigation is obtained. Third, the symbol error rates for the OFDM modulation and the code spreading systems are given. Simulation results show that OFDM symbol length should be selected longer when the symbol duration is significantly lower than the SI coherent time while the length of the coding spreading system should be chosen shorter.

Keywords: Full-duplex; SER; OFDM; Code spreading; Time-varying self-interference channel (search for similar items in EconPapers)
Date: 2018
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DOI: 10.1007/s11235-017-0354-8

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