Papers by Mouncef Benmimoune
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Proceedings of the 2009 International Conference on Wireless Communications and Mobile Computing: Connecting the World Wirelessly, 2009
Page 1. Detection and Separation in Space Time Block Coding Us-ing Noisy Compound PCA - ICA Model... more Page 1. Detection and Separation in Space Time Block Coding Us-ing Noisy Compound PCA - ICA Model Abdelkrim Hamza 1 , Salim Chitroub 1 , Moncef Benmimoune 2 , and Rachida Touhami 2 ... [4] S. Kim, J. Park and Y. Park, MIMO partial parallel interfe-rence cancellation ...
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2019 IEEE Global Conference on Signal and Information Processing (GlobalSIP), 2019
In this paper, we propose an efficient precoding solution for a correlated Multi-Input Multi-Outp... more In this paper, we propose an efficient precoding solution for a correlated Multi-Input Multi-Output (MIMO) broadcast channels. Indeed, we apply the principal component analysis (PCA) to uncorrelate (whiten) the channel prior to codeword selection. As such, the channel state information at the transmitter (CSIT), picked up through finite-rate feedback, corresponds to the uncorrelated channel version. Thus, the optimality of the approach. The simulation results compared with conventional MIMO precoders for various levels of spatial correlation as well as different receive antenna settings, show that the proposed scheme provides greater system performance enhancement in terms of sum rate.
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Microwave and Optical Technology Letters, 2016
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2016 10th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP), 2016
Massive MIMO (Multi-Input Multi-Output) is considered as a promising technology for the fifth gen... more Massive MIMO (Multi-Input Multi-Output) is considered as a promising technology for the fifth generation of wireless communication systems (5G). In this paper, we deal with the CSI feedback reduction issue when a base station (BS) equipped with a large number of antennas serves a limited number of receiver nodes disposed in several groups. This paper considers the practical case where spatial correlation exists among the transmit antennas of the BS. We propose a novel scheme that achieves a considerable reduction in CSI feedback overhead communicated by the receiver nodes to the BS. The proposed approach performs a joint antenna selection and grouping to handle the spatial correlation issue. To this end, we propose a low complexity algorithm that runs antenna selection distributively at each group of receiver nodes. We show that the proposed scheme offers enormous reduction in CSI feedback while ensuring acceptable performance in terms of achievable sum-rate and low computational complexity thanks to its greedy nature.
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International Journal of Microwave and Wireless Technologies, 2016
Since last decades, microwaves have received tremendous attention as an interesting tool for mate... more Since last decades, microwaves have received tremendous attention as an interesting tool for material characterization. In general, standard microwave measurement methods require cutting and polishing of samples to put it in a suitable waveguide or cavity. However, several methods have been developed in order to permit a non-destructive measurement. A well-known method is based on coaxial open-ended waveguide, which is used as a sensor for dielectric characterizations. Moreover, with the requirement of new forms, developing mathematical model for each one is not convenient. Indeed, the complex structures required in the industrial field can be perfectly designed with high-performance three-dimensional software. Many attempts have been done to solve the conversion problem by proposing different algorithms. Nevertheless, they are sensitive for complex structure that contains transition part. In this paper, we propose a dielectric measurement method based on the use of coaxial waveguid...
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2015 IEEE Global Communications Conference (GLOBECOM), 2014
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2015 IEEE 82nd Vehicular Technology Conference (VTC2015-Fall), 2015
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2015 IEEE Wireless Communications and Networking Conference (WCNC), 2015
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2012 IEEE 55th International Midwest Symposium on Circuits and Systems (MWSCAS), 2012
ABSTRACT This paper presents a novel precoding approach for MIMO broadcast channels, in which is ... more ABSTRACT This paper presents a novel precoding approach for MIMO broadcast channels, in which is performed on both sides of the wireless link. The aim of the proposed approach is to avoid the same precoding vectors choice when all users use a common codebook. In the proposal approach, firstly, we focus on the brute codeword selection at the transmitter side, thus there is zero probability to choose the same vector for more than one user. However, this solution leads an exhaustive search, especially when the number of user and the codebook size increase. To overcome this issue, secondly, we adopt the genetic algorithm in order to reduce the codeword search complexity. Compared with zero-forcing beamforming (ZFBF), the conducted simulation results for the critical scenario of low SNR, show that our scheme is better than ZFBF with the assumption of both perfect and partial channel state information at the transmitter.
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2010 7th International Symposium on Wireless Communication Systems, 2010
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2011 IEEE Vehicular Technology Conference (VTC Fall), 2011
ABSTRACT This paper presents a new precoding approach based on a genetic algorithm to search for ... more ABSTRACT This paper presents a new precoding approach based on a genetic algorithm to search for coded codewords applied to a multi-user MIMO system. The main idea hinges on the definition of coded codewords in which no codebook is previously stored at transmitter and receiver. In this manner, the precoder aims to maximize the sum capacity in order to solve the optimization problem by searching for the best coded codewords for all users. The performance evaluation and complexity analysis show that our approach offers outstanding performance and low complexity compared with the multi-user MIMO precoding scheme based on the Grassmannian codebook. The proposed method uses a multiplier-free precoding suitable for VLSI implementation.
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2010 7th International Symposium on Wireless Communication Systems, 2010
ABSTRACT In this paper, our aim is to use a Kerdock codebook-based precoding scheme for a multi-u... more ABSTRACT In this paper, our aim is to use a Kerdock codebook-based precoding scheme for a multi-user MIMO broadcast channel with channel state information at the base station and limited feedback. The main reason for applying a Kerdock code in place of optimal precoding is to reduce VLSI implementation complexity. The proposed scheme exploits the scheduling and precoding methods with a view to maximizing system capacity and precanceling the multi-user interferences. Conducted simulations show that the proposed scheme provides greater system capacity enhancement than a single-user MIMO system and outperforms the Grassmannian precoding with lower complexity, a key point, by a factor of 1.45.
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Wireless Networks, 2016
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Papers by Mouncef Benmimoune