HCM Successive Transmission Scheme With Banded MMSE Equalization Based on Fast Convolution Over Doubly-Selective Fading Channels

Lin, Xu; Mei, Lin; Fang, Xiaojie; Sha, Xuejun

doi:10.1109/lcomm.2019.2954309

Cited by 3 publications

(1 citation statement)

References 16 publications

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“…Recently, the FC structure has been applied in waveform design, in order to implement filter banks flexibly with low complexity [14], [15]. Besides, FC has also been used to improve the performance of banded equalization to form a novel hybrid carrier modulation successive transmission scheme [16]. Here, we use FC to improve the PFFT scheme.…”

Section: Introductionmentioning

confidence: 99%

Partial FFT Demodulation Scheme Based on Fast Convolution Structure

Lin

Mei

Labeau

et al. 2020

IEEE Signal Process. Lett.

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In systems that aim to mitigate the inter-carrier interference (ICI) caused by doubly selective (DS) channels, the partial Fast Fourier Transform (PFFT) has emerged as an interesting alternative to the conventional FFT. In this letter, we propose a novel PFFT demodulation scheme based on fast convolution (FC) structure. The proposed scheme uses the overlap-save operation of FC to further suppress the residual interference (RI) to improve performance over DS channels, including in terms of bit error rate (BER), while, at the same time, allowing for an improvement in spectral efficiency by avoiding the use of a cyclic prefix (CP). We provide a theoretical analysis of RI and numerical simulations to demonstrate the superiority of the proposed scheme in terms of BER performance.

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Section: Introductionmentioning

confidence: 99%