Message-Passing Receiver for OFDM Systems Over Highly Delay-Dispersive Channels

Barbu, Oana-Elena; Manchón, Carles Navarro; Rom, Christian; Fleury, Bernard Henri

doi:10.1109/twc.2017.2648784

Cited by 6 publications

(2 citation statements)

References 40 publications

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“…The purpose of MMSE equalization is to minimize the bit error rate (BER), which is equivalent to a compromise between channel noise and inter-symbol interference, but the residual inter-symbol interference is still serious. During the past few years, various solutions have been proposed to suppress the multi-path interference in the highly delay-dispersive channel [9][10] [11]. Especially based on the minimum mean-square error criterion, many scholars have conducted research based on it.…”

Section: Introductionmentioning

confidence: 99%

Joint MMSE-RISIC and Channel Revised for SC-FDE Aeronautical Mobile Communication System

Pengyu

Xiang

2023

Preprint

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Under the condition of slow fading time-varying multipath channel with low rice factor, it is difficult to make effective use of signal energy, therefore, the traditional Minimum Mean Squared Error (MMSE) technique cannot effectively reduce the bit error rate. To solve the above problem, we proposes a new equalization scheme for aeronautical mobile communication based on MMSE andresidual intersymbol interference cancellation (MMSE-RISIC), firstly, the hard decision signal is modified to obtain the reconstruction signal of frequency domain, and then further decision is made according to the time domain error. Its essence is to modify the channel to make the estimated channel closer to the real channel. The simulation results show that the SNR can be improved by about 2-8dB with the same bit error performance, indicating that the equalization algorithm makes full use of the energy of the multipath component and obtains the signal-to-noise ratio gain.

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Section: Introductionmentioning

confidence: 99%

Joint MMSE-RISIC and Channel Revised for SC-FDE Aeronautical Mobile Communication System

Pengyu

Xiang

2023

Preprint

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“…However, in most applications, CSI is only available at the receiver and an important decrease of the spectral efficiency can hardly be afforded. More realistic alternatives try to mitigate the presence of the channel tail by using decision feedback estimates on the transmitted symbols [10][11][12][13][14] or by forcing a brute-force restoration of the circulant signal structure [15,16].…”

Section: Introductionmentioning

confidence: 99%

Equalization of OFDM Waveforms with Insufficient Cyclic Prefix

Gregoratti¹,

Mestre²

2020

ICASSP 2020 - 2020 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)

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In this paper, a simple equalization strategy for OFDM waveforms is proposed that specifically targets the case where the cyclic prefix is insufficient to span the whole channel duration. The proposed architecture can be very efficiently implemented in the frequency domain without the need for complex matrix inversions or iterative estimation procedures. Furthermore, the equalizer is shown to outperform conventional methodologies as the system dimensions grow large. Numerical results confirm the excellent behavior of the proposed strategy even for conventional values of the system size.

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