A Low-Complexity Concatenated ICI Cancellation Scheme for High-Mobility OFDM Systems

Sheu, Chorng-Ren; Tseng, Ming-Chien; Chen, Ching-Yung; Lin, Hsin‐Piao

doi:10.1109/wcnc.2007.262

Cited by 8 publications

(4 citation statements)

References 6 publications

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“…It is also shown through simulations that the method in [21] outperforms the method in [20] if the length of the ISI-free region is less than N/2. Nevertheless, the optimum combining weights have not been studied until the time that we published our previous paper [25], to the best of our knowledge.…”

Section: A Review Of the Existing Methodsmentioning

confidence: 94%

“…In [21] and [22], heuristic combining weights selection methods were proposed, aiming to cancel the ICI effect induced by the adjacent subcarriers. The combining weights of [21] are given as…”

Section: A Review Of the Existing Methodsmentioning

confidence: 99%

“…In this situation, the work in [20] suggested to set the combining weights uniformly, but this is apparently a suboptimum solution in the sense of ICI minimization. Afterward, in [21]- [23], heuristic algorithms were proposed to choose better combining weights to improve the performance of [20]. In a parallel work [24], an engineering intuition that Frank function window may be the optimum combining window was shown.…”

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confidence: 99%

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Low-Complexity ICI Suppression Methods Utilizing Cyclic Prefix for OFDM Systems in High-Mobility Fading Channels

Liu

Huang

2014

IEEE Trans. Veh. Technol.

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Abstract-This paper focuses on a simple intercarrier interference (ICI) suppression scheme that linearly combines the intersymbol interference (ISI)-free part of a cyclic prefix (CP) and its corresponding part in an orthogonal frequency-division multiplexing (OFDM) signal to soothe the ICI effect caused by a timevarying channel. In contrast with existing heuristic combining weights in the literature for ICI suppression, we derived three sets of optimum combining weights in different aspects. Through simulations, we show that the proposed combining weights outperform other existing heuristic combining weights. In addition, a simplified implementation is introduced to reduce the computational complexity of combining. Furthermore, the proposed methods can be incorporated with other ICI mitigation methods to further improve the system performance.Index Terms-Cyclic prefix (CP) combining, cyclic prefix (CP) recycling, high mobility, intercarrier interference (ICI) suppression, low-complexity ICI mitigation method, orthogonal frequency-division multiplexing (OFDM), sliding window.

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Section: A Review Of the Existing Methodsmentioning

confidence: 94%

Section: A Review Of the Existing Methodsmentioning

confidence: 99%

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confidence: 99%

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Low-Complexity ICI Suppression Methods Utilizing Cyclic Prefix for OFDM Systems in High-Mobility Fading Channels

Liu

Huang

2014

IEEE Trans. Veh. Technol.

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“…Comparison between conventional, Sheu, Chang and proposed schemes [10], [11], [12], [13] has been made in terms of BER and ICI+noise at various signal to noise ration (SNR) values. Author proposes an optimal weight combining calculation method to reduce the ICI and noise in the signal.…”

Section: Fig 3 Simplified Self-cancellation Technique In Ofdmmentioning

confidence: 99%

Comparative Analysis of Various Inter-Carrier Interference Cancellation Methods

Kumar¹,

Kaur²,

Sohi³

2015

IJWMT

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This paper provides a review of various inter carrier interference cancellation methods used in Orthogonal Frequency Division Multiplexing (OFDM) in the downlink of Long Term Evolution (LTE) and in many other applications. It contains the analysis of different methods, their explanations, areas of implementation, advantages, drawbacks and finally a comparison of the methods has been made. The paper is based on the fact that during OFDM reception, the overlapping frequencies interfere due to various reasons and different methods have to be applied to avoid interference among the frequencies for a proper reception at the receiver.

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OFDM Error Floor Prediction in a Small-Time-Dispersion Channel

Lipovac

2013

Wireless Pers Commun

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A Low-Complexity Concatenated ICI Cancellation Scheme for High-Mobility OFDM Systems

Cited by 8 publications

References 6 publications

Low-Complexity ICI Suppression Methods Utilizing Cyclic Prefix for OFDM Systems in High-Mobility Fading Channels

Low-Complexity ICI Suppression Methods Utilizing Cyclic Prefix for OFDM Systems in High-Mobility Fading Channels

Comparative Analysis of Various Inter-Carrier Interference Cancellation Methods

OFDM Error Floor Prediction in a Small-Time-Dispersion Channel

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