Decorrelative successive interference cancellation for cyclic interleaved frequency division multiplexing

G. Anuthirsha and S. Lenty Stuwart ()
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G. Anuthirsha: University College of Engineering
S. Lenty Stuwart: University College of Engineering

Telecommunication Systems: Modelling, Analysis, Design and Management, 2024, vol. 87, issue 1, No 8, 105-118

Abstract: Abstract Cyclic interleaved frequency division multiplexing (CIFDM) stands out as a promising solution for enhancing diversity reception over frequency-selective channels. Within the CIFDM framework, cyclic interleaving at the transmitter, followed by multipath detection at the receiver, collaboratively contributes to performance improvement. A recent advancement in this domain is the introduction of CIFDM-successive interference cancellation (CIFDM-SIC) (Anuthirsha and Stuwart in ETRI J, 1--11, 2024), a multipath multistage detection method. However, CIFDM-SIC leaves room for improvement, as it only partially mitigates multipath interference resulting from the semi-orthogonality of codes in CIFDM. To address this limitation, our current approach introduces a CIFDM-decorrelative successive interference cancellation (CIFDM-dSIC) method. In the proposed CIFDM-dSIC, a decorrelation process is employed to effectively eliminate non-orthogonal interference components arising from the cross-correlation of codes in the SIC output stages. Specifically, after the completion of the entire SIC operation, interference at each output stage, except the last one, is eliminated through path-specific decorrelation of the effective spreading codes. We have conducted a comprehensive evaluation of the performance of CIFDM-dSIC under various scenarios, comparing it with both existing CIFDM and traditional interleaved frequency division multiplexing methods. Simulation results unequivocally establish the dominance of the proposed CIFDM-dSIC, affirming its reliability in terms of bit error rate and diversity reception.

Keywords: Cyclic interleaved frequency division multiplexing; Successive interference cancellation; Decorrelative successive interference cancellation (search for similar items in EconPapers)
Date: 2024
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DOI: 10.1007/s11235-024-01181-y

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