A Novel Message Passing Based MIMO-OFDM Data Detector with a Progressive Parallel ICI Canceller

Huang, Chao-Wang; Ting, Pangan; Huang, Chih-Cheng

doi:10.1109/twc.2011.021611.101103

Cited by 14 publications

(4 citation statements)

References 25 publications

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“…In view of the above problem, Ochandiano et al [63] proposed a Doppler shift compensation scheme based on a novel factor graph (FG) approach. Essentially, FGs represent graphically the factorization of a function based on Forney observation model [64] upon which various schemes such as progressive parallel ICI cancellation have been proposed [65]. The FG scheme has been shown to be a good alternative to solve complex interference problems by exploiting the output of a whitened matched filter for computing the branch metrics of the Viterbi Algorithm.…”

Section: Space Domain Compensation Schemesmentioning

confidence: 99%

Doppler Shift Compensation Schemes in VANETs

Nyongesa¹,

Djouani²,

Olwal³

et al. 2015

Mobile Information Systems

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Over the last decade vehicle-to-vehicle (V2V) communication has received a lot of attention as it is a crucial issue in intravehicle communication as well as in Intelligent Transportation System (ITS). In ITS the focus is placed on integration of communication between mobile and fixed infrastructure to execute road safety as well as nonsafety information dissemination. The safety application such as emergence alerts lays emphasis on low-latency packet delivery rate (PDR), whereas multimedia and infotainment call for high data rates at low bit error rate (BER). The nonsafety information includes multimedia streaming for traffic information and infotainment applications such as playing audio content, utilizing navigation for driving, and accessing Internet. A lot of vehicular ad hoc network (VANET) research has focused on specific areas including channel multiplexing, antenna diversity, and Doppler shift compensation schemes in an attempt to optimize BER performance. Despite this effort few surveys have been conducted to highlight the state-of-the-art collection on Doppler shift compensation schemes. Driven by this cause we survey some of the recent research activities in Doppler shift compensation schemes and highlight challenges and solutions as a stock-taking exercise. Moreover, we present open issues to be further investigated in order to address the challenges of Doppler shift in VANETs.

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Section: Space Domain Compensation Schemesmentioning

confidence: 99%

Doppler Shift Compensation Schemes in VANETs

Nyongesa¹,

Djouani²,

Olwal³

et al. 2015

Mobile Information Systems

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show abstract

“…Many recent articles address the use of FG-based algorithms (also known as belief propagation (BP) algorithms) for detection or equalization in channels with memory [31][32][33]. Recently, this framework has been extended to ICI channels: a set of detection algorithms have been presented based on the Ungerboeck approach for MAP symbol detection [34], while in [35], progressive parallel ICI cancelation has been proposed based on FGs. T , equally likely and chosen from a complex constellation χ are transformed into the time domain applying the inverse discrete Fourier transform (IDFT) rule.…”

Section: Background On Ici Suppressingmentioning

confidence: 99%

Factor graph based detection approach for high-mobility OFDM systems with large FFT modes

Ochandiano

Wymeersch

Mendicute

et al. 2012

J Wireless Com Network

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In this article, a novel detector design is proposed for orthogonal frequency division multiplexing (OFDM) systems over frequency selective and time varying channels. Namely, we focus on systems with large OFDM symbol lengths where design and complexity constraints have to be taken into account and many of the existing ICI reduction techniques can not be applied. We propose a factor graph (FG) based approach for maximum a posteriori (MAP) symbol detection which exploits the frequency diversity introduced by the ICI in the OFDM symbol. The proposed algorithm provides high diversity orders allowing to outperform the free-ICI performance in high-mobility scenarios with an inherent parallel structure suitable for large OFDM block sizes. The performance of the mentioned near-optimal detection strategy is analyzed over a general bit-interleaved coded modulation (BICM) system applying low-density parity-check (LDPC) codes. The inclusion of pilot symbols is also considered in order to analyze how they assist the detection process.

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“…In [4], a combination algorithm of PIC and semi-definite relaxation (SDR) was studied. Progressive parallel interference canceller (PPIC) technology was developed in [5]. The self-cancellation schemes were developed in [6,7].…”

Section: Introductionmentioning

confidence: 99%

An Adaptive Inter-Carrier Interference Mitigation Method for MIMO-OFDM Systems in HST Environment

Wu¹,

Jiao²,

He³

et al. 2019

Proceedings of the 2018 International Conference on Mathematics, Modeling, Simulation and Statistics Application (MMSSA 2018)

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In this paper, we propose an adaptive intercarrier interference (ICI) mitigation algorithm based on phase rotated conjugate cancellation (PRCC) scheme. For the MIMO-OFDM systems in high-speed train (HST) environment, the ICI is caused by the non-stationary time-varying channels. By updating the optimal phases every two OFDM symbols, our method achieves additional optimal rotated phases applicable for HST wireless channels. Simulation results demonstrate that the carrier-to-interference ratio (CIR) increase and the bit error rate (BER) decreases enormously in our method. Therefore, the proposed adaptive algorithm is effective for mitigating the ICI in HST environment comparing with the traditional ICI selfcancellation algorithm.

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A Novel Message Passing Based MIMO-OFDM Data Detector with a Progressive Parallel ICI Canceller

Cited by 14 publications

References 25 publications

Doppler Shift Compensation Schemes in VANETs

Doppler Shift Compensation Schemes in VANETs

Factor graph based detection approach for high-mobility OFDM systems with large FFT modes

An Adaptive Inter-Carrier Interference Mitigation Method for MIMO-OFDM Systems in HST Environment

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