A Study of the Correlation Between Horizontal and Vertical Polarizations of Impulsive Noise in UHF

Torío, Pablo; Sánchez, Manuel García

doi:10.1109/tvt.2007.900398

Cited by 15 publications

(5 citation statements)

References 14 publications

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“…For a certain wireless communication system, different antenna polarization modes will definitely yield diverse performance, but also of much importance since it only requires a simple antenna position change. Torio and Sanchez 27 presented a correlation analysis between the amplitudes of both horizontal and vertical polarizations in the time domain. Inspired by their concepts, we performed a similar experiment in the frequency domain.…”

Section: Analysis On Frequency‐domain Resultsmentioning

confidence: 99%

Measurements and statistical analyses of electromagnetic noise for industrial wireless communications

et al. 2020

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In this paper, we performed a series of measurement campaigns on the wireless electromagnetic noise for two typical industrial welding scenarios. On this basis, we investigate the characterization of the impulsive noise mainly from two aspects, that is, frequency and time domains. To start with, a novel denoising method based on the dynamic threshold is proposed to identify the desirable impulse noise from the background noise. Then, in the frequency domain, we focus on the power distribution of impulsive noise at different frequency bands. Results exhibit a shadow effect with regard to different frequency bands and we characterize it by using a linear function with a Gaussian distribution. Besides, analyses on the power spectrum correlation for different polarization modes and scenarios are also provided. In the time domain, we performed a series of statistical analyses from aspects of pulse amplitude, duration, and elapse interval to characterize the impulsive noise. Furthermore, three empirical distributions are employed to depict the parameters' variation tendency, that is, Cauchy distribution for amplitude, Gamma distribution for pulse duration, and exponential distribution for pulse interval. Finally, a firstorder two-states Markov method is proposed to model the industrial noise. Simulation results are proved to be

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Section: Analysis On Frequency‐domain Resultsmentioning

confidence: 99%

Measurements and statistical analyses of electromagnetic noise for industrial wireless communications

et al. 2020

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“…Since the ambient noise often exhibits impulsive non-Gaussian nature due to moving obstacles, car ignitions, and lightning in the atmosphere [11], we also compare the frequency offset acquisition of the proposed and conventional schemes in non- Gaussian noise environments. The non-Gaussian noise is often modeled as Cauchy noise [12].…”

Section: Numerical Resultsmentioning

confidence: 99%

An OFDM Carrier Frequency Offset Estimation Scheme with Wide Fractional Offset Estimation Range

Yu¹,

Lee²,

Kim³

et al. 2013

Journal of Applied Research and Technology

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In this paper, we propose a carrier frequency offset (CFO) estimation scheme which is robust to the fractional CFO variation for orthogonal frequency division multiplexing (OFDM) systems. The proposed scheme first performs the envelope equalization process to convert the offset estimation problem to a carrier estimation problem, and then, estimates the integer and fractional parts of CFO by using periodogram of the received signal. Especially, in the estimation stage for fraction CFO, the ratio of the square-roots of periodograms is employed enlarging the estimation range of the stage than that of the conventional scheme. Numerical results demonstrate that the proposed scheme has better estimation performance than the conventional scheme for wider fractional CFO range in various channel conditions.

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“…As mentioned earlier, SNR ratio is introduced to compensate the difference between the exact SER and the approximate (9) and the approximate SNR ratio by (10) and (11) as a function of A in case of impulsive noise with Γ = 10 −3 .…”

Section: Snr Ratio For Ser Approximationmentioning

confidence: 99%

Maximum Rate Scheduling With Adaptive Modulation in Mixed Impulsive Noise and Additive White Gaussian Noise Environments

Nam

2021

IEEE Trans. Wireless Commun.

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This article proposes an opportunistic scheduling scheme based on adaptive modulation for users in a mixed noise environment, where some users are under additive white Gaussian noise (AWGN) and other users are exposed to impulsive noise. Unlike the scenario, where all the users are in an AWGN environment, the maximum signal-to-noise ratio (SNR) scheduler does not provide the maximum capacity if users are in a mixed noise environment. In the proposed scheduling scheme, called maximum rate scheduler, the user with the highest rate (or highest modulation order), instead of highest SNR, is selected. To evaluate the performance of the proposed scheduling scheme, the analyses of average spectral efficiency, outage probability and system capacity are provided along with a simple calculation of SNR thresholds for adaptive modulation in an impulsive noise environment satisfying target symbol error rate (SER). Simulation results illustrate that system capacity with the proposed scheduling given target SER = 10 −2 and the average spectral efficiency are improved by 156% and 124%, respectively, at SNR = 5 dB when a strong impulsive noise is present.

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A Study of the Correlation Between Horizontal and Vertical Polarizations of Impulsive Noise in UHF

Cited by 15 publications

References 14 publications

Measurements and statistical analyses of electromagnetic noise for industrial wireless communications

Measurements and statistical analyses of electromagnetic noise for industrial wireless communications

An OFDM Carrier Frequency Offset Estimation Scheme with Wide Fractional Offset Estimation Range

Maximum Rate Scheduling With Adaptive Modulation in Mixed Impulsive Noise and Additive White Gaussian Noise Environments

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