Spectrally Efficient QAM-FBMC System Using FTN Scheme with Block-Wise Interleaved Filters

Han, Seongbae; Choi, Sooyong

doi:10.1109/vtcfall.2018.8690827

Cited by 3 publications

(2 citation statements)

References 7 publications

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“…On the one hand, we propose a lower complexity transceiver for MFTN with MC, employing the low complexity IFFT/FFT and filtering operation. Some authors in [7], [16], [28] have used the direct implementation for MFTN. The direct implementation of MFTN has a higher number of complex multiplications than efficient implementation.…”

Section: Introductionmentioning

confidence: 99%

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Multicarrier Faster-Than-Nyquist Based on Efficient Implementation and Probabilistic Shaping

2021

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The conventional multicarrier faster-than-Nyquist (MFTN) achieves the spectral efficiency (SE) gain by deep compression. However, deep compression leads to severe intersymbol interference (ISI) or intercarrier interference (ICI). We propose the MFTN based on efficient implementation and probabilistic amplitude shaping (PAS) to achieve the SE gain with low complexity. We use mild compression instead of conventional deep compression to achieve the compression gain. The MFTN transceiver with the mild compression can be efficiently implemented by fast Fourier transform (FFT)/inverse FFT (IFFT) and filtering operation. The linear pre-equalization (LPE) method eliminates the ISI for mild compression. The MFTN with efficient implementation employs PAS to achieve extra shaping gain. The theoretical results and simulation results show that our method can achieve better performance than the conventional FTN/MFTN with deep compression. The proposed method does not require a complex equalization algorithm and global turbo iteration so that the total complexity is reduced.INDEX TERMS Multicarrier, faster-than-Nyquist, linear pre-equalization, probabilistic shaping, mild compression.

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Section: Introductionmentioning

confidence: 99%

“…c = 1. The efficient implementation of MFTN has a lower number of complex multiplications than direct implementation[28]. The efficient implementation of MFTN also further reduces the computational complexity of FFF and FBF.…”

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confidence: 99%

Multicarrier Faster-Than-Nyquist Based on Efficient Implementation and Probabilistic Shaping

2021

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A Hybrid Optimization-Based Technique for Channel Estimation in OFDM System: A Parametric Approach

Arora

Chawla²

2022

Wireless Pers Commun

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The performance of OFDM system depends on the how efficient channel estimation is, which directly impacts its bit error rate (BER). In this research work, the novel technique of pseudo-pilot aided OFDM system is used its channel estimation with least square (LS) and Recursive Least Squares (RLS) approach. In proposed technique, for channel estimation Pseudo-pilot technique is used in OFDM system over AWGN fading channels. A hybridization technique has been implemented to alleviate the error rate in the signals. The hybrid optimization approach is implemented on the estimated output for the optimum solution. The combination of the two optimization techniques is PSO (particle swarm optimization) and MFO (Moth Flame Optimization) method that is used for optimization of the performance rate. To get more optimum solutions (reducing BER) OFDM system is trained with neural network (NN). The performance of the proposed techniques and the weighted scheme are compared and verified using computerized simulation carried out using Matrix Laboratory (MATLAB) software. The hybrid approach is able to achieve low BER of the network. The BER of PSO is 1.004 x 10 -7 whereas for hybrid optimization (PSO+MFO) BER is 6.275 x 10 -8 at 18 dB SNR. After training of the whole system is done with BPNN which will further reduce the BER while increasing SNR. By using BPNN, BER will further reduce to 1.243 x 10 -8 at 18 dB SNR. It means hybrid optimization is done to optimize the performance of the channel and reduce the BERs, which will help to increase the channel estimation process as well as channel capacity and further reduces the losses while transmission from one end to the other end.

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Spectrum Efficient Faster-than-Nyquist DCO-FBMC for Optical Wireless Communications

Cao

Qiu

Zhou

et al. 2022

2022 IEEE 10th International Conference on Information, Communication and Networks (ICICN)

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Spectrally Efficient QAM-FBMC System Using FTN Scheme with Block-Wise Interleaved Filters

Cited by 3 publications

References 7 publications

Multicarrier Faster-Than-Nyquist Based on Efficient Implementation and Probabilistic Shaping

Multicarrier Faster-Than-Nyquist Based on Efficient Implementation and Probabilistic Shaping

A Hybrid Optimization-Based Technique for Channel Estimation in OFDM System: A Parametric Approach

Spectrum Efficient Faster-than-Nyquist DCO-FBMC for Optical Wireless Communications

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