Journal Article10.1109/LCOMM.2016.2533484
Partial Update Sequential Probabilistic Integer Least Square Inter Carrier Interference Mitigation Algorithm in Mobile OFDM System
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TL;DR: A new low complexity SPILS algorithm is proposed by using the banded property of the frequency domain channel matrix by achieving the performance much closer to that of the SPILS and at the same time requires the computation complexity on the same level of that of QSPILS algorithm.
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Abstract: The performance of mobile orthogonal frequency division multiplexing (OFDM) system is affected by the intercarrier interference (ICI). A recently proposed sequential probabilistic integer least squares (SPILS) algorithm remarkably improves the performance of ICI mitigation. The corresponding low complexity Quick SPILS (QSPILS) algorithm is also proposed to reduce the complexity of SPILS algorithm but at the cost of rapidly reducing the performance. In this letter, we propose a new low complexity SPILS algorithm by using the banded property of the frequency domain channel matrix. The proposed algorithm achieves the performance much closer to that of the SPILS and at the same time requires the computation complexity on the same level of that of QSPILS algorithm.
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References
Robust and Efficient Intercarrier Interference Mitigation for OFDM Systems in Time-Varying Fading Channels
Xiaozhou Huang,Hsiao-Chun Wu +1 more
TL;DR: Simulation results show that the proposed low-complexity ICI suppression scheme, which incorporates the -tap equalizer with the MMSE channel estimator, can significantly improve the performance of OFDM systems in fast time-varying fading channels.
105
An improved ICI reduction method in OFDM communication system
TL;DR: In the OFDM system with phase noise, the data-conjugate method can make remarkable improvement of the BER performance and it is better than theData-conversion method and the original OFDM with or without convolution coding.
101
Frequency-Domain Oversampling for Zero-Padded OFDM in Underwater Acoustic Communications
TL;DR: This paper explores frequency-domain oversampling to improve the system performance of zero-padded OFDM transmissions over underwater acoustic channels with large Doppler spread, using a signal design that enables separate sparse channel estimation and data detection and rendering a low complexity receiver.
96
Super-Resolution Sparse MIMO-OFDM Channel Estimation Based on Spatial and Temporal Correlations
TL;DR: This letter proposes a parametric sparse multiple input multiple output (MIMO)-OFDM channel estimation scheme based on the finite rate of innovation (FRI) theory, whereby super-resolution estimates of path delays with arbitrary values can be achieved.
Frequency-Domain Oversampling for Zero-Padded OFDM in Underwater Acoustic Communications
Zhaohui Wang,Shengli Zhou,Georgios B. Giannakis,Christian Berger,Jie Huang +4 more
- 01 Dec 2010
TL;DR: This paper explores frequency-domain over-sampling to improve the system performance of zero-padded (ZP) orthogonal frequency division multiplexing (OFDM) transmissions over underwater acoustic channels with large Doppler spread, and uses a signal design that enables separate sparse channel estimation and data detection, reducing equalization complexity.