Grouping of subcarriers and effective SNR statistics in wideband OFDM systems using EESM

Gaveau, Jérôme; Martret, Christophe J. Le; Assaad, Mohamad

doi:10.1109/wimob.2017.8115800

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System and Channel Models1

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Cited by 3 publications

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“…The total number of available estimated channel samples is thus N := i s × i p . We assume that the frequency spacing between two pilot symbols within one OFDMA symbol is larger than the channel's coherence bandwidth (which can be evaluated with [20]), and thus we neglect the channel's frequency correlation. We also neglect the channel's fast fading time correlation.…”

Section: System and Channel Modelsmentioning

confidence: 99%

Estimation of the Ricean $K$ Factor in the Presence of Shadowing

Leturc¹,

Ciblat²,

Martret³

2020

IEEE Commun. Lett.

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We address the estimation of the Ricean K factor when the available complex channel samples are noisy and subject to Nakagami-m shadowing, i.e., the line-of-sight component is modeled as a Nakagami-m random variable. We propose two estimators: one based on the expectation-maximization (EM) procedure, and a second one based on the method of moment (MoM). The MoM estimator can be used to initialize the EM procedure. We show by simulations that the two proposed estimators outperform the existing ones.

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Section: System and Channel Modelsmentioning

confidence: 99%