A Blind Carrier Frequency Offset Estimation Scheme for OFDM Systems via Hybrid-ICA Algorithm

Jalili, Amin; Amirani, Mehdi Chehel; Kordan, Saied Balaneshin

doi:10.11591/ijece.v4i5.6533

Cited by 2 publications

(2 citation statements)

References 16 publications

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“…The basic concept behind OFDM technology is the division of a wideband frequency selective channel into multiple narrow band flat fading sub-channels in which the data bits can be transmitted in parallel through a large number of orthogonal subcarriers where the bandwidth of each subcarrier is much less than the channel coherence bandwidth [7]. Figure 2 shows the transceiver architecture of OFDM [8].…”

Section: Ofdm Signal Transmission and Receiption Over Fso Linkmentioning

confidence: 99%

Performance Investigation of OFDM-FSO System under Diverse Weather Conditions of Bangladesh

Sultana¹,

Barua²,

Akhtar³

et al. 2018

IJECE

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Free space optical (FSO) communication systems which are deployed for last mile access, being considered as a suitable alternative technology for optical fiber networks. It is one of the emerging technologies for broadband wireless connectivity which has also been receiving growing attention due to high data rate transmission capability with low installation cost and license free spectrum. However, the widespread use of FSO technology has been hampered by the randomly time varying characteristics of propagation path mainly due to atmospheric turbulence, sensitivity to diverse weather conditions and the nonlinear responsivity of laser diode. This paper presents the performance investigation of an OFDM-FSO system over atmospheric turbulence channels under diverse weather conditions of Bangladesh. The channel is modeled with gamma-gamma distribution using 16-QAM modulation format and 4×4 multiple transceiver FSO system. All possible challenges are imposed on the system performance such as atmospheric attenuation, turbulence, pointing error, geometric loss etc. The refractive index structure parameter and atmospheric attenuation coefficient for different weather conditions are calculated by using the data, collected from Bangladesh Meteorological Department. The acquired results can be fruitful for scheming, forecasting and assessing the OFDM-FSO system’s ability to transmit wireless services over turbulent FSO links under actual conditions of Bangladesh.

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Section: Ofdm Signal Transmission and Receiption Over Fso Linkmentioning

confidence: 99%

Performance Investigation of OFDM-FSO System under Diverse Weather Conditions of Bangladesh

Sultana¹,

Barua²,

Akhtar³

et al. 2018

IJECE

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show abstract

“…Recent applications of sensors characterization, systems identification and digital communications require controlled frequency generators with high stability and low frequency resolution [1]- [6]. In the case of sweep frequency analysis, it is also important to improve the measurement of required parameters such as amplitude and phase shift between input and output waves.…”

Section: Introductionmentioning

confidence: 99%

Referenced Approximation Technique for a Rom-Less Sweep Frequency Synthesizer

Jbari¹,

Bellarbi²,

Errachid³

2016

IJECE

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The main goal of this paper is to present a novel ROM-less direct digital frequency synthesizer for sweep instrumentation systems. It provides a main sweep channel for frequency analysis and a reference channel for phase and amplitude measurement block operating at constant frequency. For phase to amplitude converter, we propose a new trigonometric approximation technique based on a set of reference angles. In addition, we present the design of the proposed synthesizer and its evaluation in Matlab-Simulink environment. The simulation results illustrate the performances and demonstrate the effectiveness of our proposed circuit.

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A Blind Carrier Frequency Offset Estimation Scheme for OFDM Systems via Hybrid-ICA Algorithm

Cited by 2 publications

References 16 publications

Performance Investigation of OFDM-FSO System under Diverse Weather Conditions of Bangladesh

Performance Investigation of OFDM-FSO System under Diverse Weather Conditions of Bangladesh

Referenced Approximation Technique for a Rom-Less Sweep Frequency Synthesizer

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