A Low Complexity ICI Cancellation Scheme with Multi-Step Windowing and Modified SIC for High-Mobility OFDM Systems

Sheu, Chorng-Ren; Liu, Jiawei; Huang, Chih-Cheng

doi:10.1109/vetecs.2010.5493826

Cited by 8 publications

(6 citation statements)

References 6 publications

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“…In [20]- [22], the q + 1 ISI-free segments are weighted and combined to mitigate the ICI effect. The frequency-domain combined signal on subcarrier k, which is denoted v(k), can be represented as…”

Section: A Review Of the Existing Methodsmentioning

confidence: 99%

“…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%

“…Without loss of generality, l∈L Ξ l is normalized to 1 in the following. Therefore, (22) can be expressed as…”

Section: B Methods 1: Ici Power Minimizationmentioning

confidence: 99%

“…We further assume that the length of the CP is relatively longer than the maximum delay spread, and there are q samples in the CP that are not affected by the ISI, i.e., q N g − L + 1. The interval [−q, −1] is commonly known as the ISI-free region [20]- [22], and interval [−N g , −q − 1] is named the ISI-polluted region. Received signal y t (n) can be expressed as…”

Section: System Modelmentioning

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: 99%

Section: A Review Of the Existing Methodsmentioning

confidence: 99%

“…Without loss of generality, l∈L Ξ l is normalized to 1 in the following. Therefore, (22) can be expressed as…”

Section: B Methods 1: Ici Power Minimizationmentioning

confidence: 99%

Section: System Modelmentioning

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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“…The normalized frequency offset for path is given by (12) The results are performed for MPSK modulation and the CIR for general OFDM system is given by:…”

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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Low ICI Symbol Boundary Alignment for 5G Numerology Design

Arslan

2018

IEEE Access

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A Low Complexity ICI Cancellation Scheme with Multi-Step Windowing and Modified SIC 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

Low ICI Symbol Boundary Alignment for 5G Numerology Design

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