Heterogeneous multi-core architecture for a 4G communication in high-speed railway

Makni, Mariem; Baklouti, Mouna; Niar, Smaïl; Biglari-Abhari, Morteza; Abid, Mohamed

doi:10.1109/idt.2015.7396731

Cited by 10 publications

(6 citation statements)

References 4 publications

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“…After the insertion of the CP and GI, the resultant OFDM symbols are converted to serial form and transmitted through a channel. To extract the original information, the OFDM receiver performs processes that are the reverse of those performed by the OFDM transmitter ( Figure 1 ) [ 23 ].…”

Section: Related Work On the Ss Of Ofdm Signalsmentioning

confidence: 99%

A Survey on the Energy Detection of OFDM Signals with Dynamic Threshold Adaptation: Open Issues and Future Challenges

Lörincz

Ramljak²,

Begušić

2021

Sensors

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Cognitive radio (CR), as a concept based on the ability to detect and share the unutilised spectrum, has been envisioned as a promising candidate to improve the efficiency of frequency spectrum assignments. For the realisation of the CR concept, energy detection (ED), as one of the available spectrum sensing methods, is broadly considered because of its low computational complexity and implementation costs. Due to the vast usage of the orthogonal frequency division multiplexing (OFDM) technique in contemporary communication systems, the ED of OFDM signals in the CR networks has become important for practical realisation. Since the ED accuracy of the OFDM signals can be improved by the sensing threshold adaptation, this paper surveys the impact of noise variations and dynamic threshold (DT) adaptation on the ED performance of OFDM signals. Analyses were performed by the simulation of the ED related to OFDM signals transmitted in the margin or rate adaptive and combined margin and rate adaptive OFDM systems. The results obtained through extensive simulations provide fundamental insights into how different factors, including the transmission power, the signal to noise ratio, the false alarm probability and the sample quantity, affect the ED efficiency. Comprehensive analyses of the obtained results indicate the main ED weaknesses and how the appropriate selection of analysed factors can enhance the ED processes for different OFDM systems. The observed ED weaknesses were further thoroughly surveyed, and the open issues and challenges related to the enhancement of the main ED limitations have been elaborated. The presented survey results can serve as a basis for the improvement of a broadly accepted ED method in CR networks.

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Section: Related Work On the Ss Of Ofdm Signalsmentioning

confidence: 99%

A Survey on the Energy Detection of OFDM Signals with Dynamic Threshold Adaptation: Open Issues and Future Challenges

Lörincz

Ramljak²,

Begušić

2021

Sensors

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“…In this section, we provide a brief description of the MIMO-OFDM LTE blocks [19,20] as shown in Figure 1. Note that, this work focuses on the implementation of the OFDM block, as it represents 50% of the processing time on a single-core system [21].…”

Section: Mimo-ofdm Lte Descriptionmentioning

confidence: 99%

“…Based on the LTE standard specification, the size of IFFT/FFT varies from 128 to 2048 for all indicated channel bandwidths. Table 1 outlines the LTE OFDM parameters [21].…”

Section: Overview Of Lte Ofdm Systemmentioning

confidence: 99%

MIMO-OFDM LTE system based on a parallel IFFT/FFT on NoC-based FPGA

Jallouli

Mazouzi

Diguet³

et al. 2022

Ann. Telecommun.

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The growing demand for wireless devices capable of performing complex communication processes has imposed an urgent need for high-speed communication systems and advanced network processors. This paper proposes a hardware workflow developed for the Long Term Evolution (LTE) communication system. It studies the Multiple-input, multiple-output orthogonal frequency-division multiplexing (MIMO-OFDM) LTE system. Specifically, this work focuses on the implementation of the OFDM block that dominates the execution time in high-speed communication systems. To achieve this goal, we have proposed an NoC-based low-latency OFDM LTE multicore system that leverages Inverse Fast Fourier Transform (IFFT) parallel computation on a variable number of processing cores. The proposed multicore system is implemented on an FPGA platform using the ProNoC tool, an automated rapid prototyping platform. Our obtained results show that LTE OFDM execution time is drastically reduced by increasing the number of processing cores. Nevertheless, the NoC's parameters, such as routing algorithm and topology, have a negligible influence on the overall execution time. The implementation results show up to 24% and 76% execution time reduction for a system having 2 and 16 processing cores compared to conventional LTE OFDM implemented in a single-core, respectively. We have found that a 4×4 Mesh NoC with XY deterministic routing connected to 16 processing tiles computing IFFT task is the most efficient configuration for computing LTE OFDM. This configuration is 4.12 times faster than a conventional system running on a single-core processor.

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“…Past studies on heterogeneous multi/manycore architectures on FPGA with pre-equipped hard-cores include Refs. [7], [8] and [9]. However, Refs.…”

Section: Related Workmentioning

confidence: 99%

“…However, Refs. [7] and [8] focus on hardware architectures and do not describe software frameworks. In Ref.…”

Section: Related Workmentioning

confidence: 99%

An OpenCL-based Software Framework for a Heterogeneous Multicore Architecture on Zynq-7000 SoC

Miyazaki

Takai

Taniguchi

et al. 2019

IPSJ Transactions on System LSI Design Methodology

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This paper presents an OpenCL-based software framework which we have developed for a heterogeneous multicore architecture on Zynq-7000 SoC. In this work, the heterogeneous architecture is designed with two hardmacro Cortex-A9 cores and two soft-macro MicroBlaze cores. A major advantage of our OpenCL framework is that it can execute OpenCL kernel programs in three ways. Experiments show the usefulness of the OpenCL framework.

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Heterogeneous multi-core architecture for a 4G communication in high-speed railway

Cited by 10 publications

References 4 publications

A Survey on the Energy Detection of OFDM Signals with Dynamic Threshold Adaptation: Open Issues and Future Challenges

A Survey on the Energy Detection of OFDM Signals with Dynamic Threshold Adaptation: Open Issues and Future Challenges

MIMO-OFDM LTE system based on a parallel IFFT/FFT on NoC-based FPGA

An OpenCL-based Software Framework for a Heterogeneous Multicore Architecture on Zynq-7000 SoC

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