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Figure8 shows the effect of pilot length assuming Full-Pe for both quasi-static and F = 4 block fading channels.
It implies that the system BER is more sensitive to the quantization accuracy than the pilot length.
In Fig. 4, the penalty value σ in the weighting matrix is 0.1, the downlink pilot length is 50, and the SNR for uplink and downlink are equal.
It is shown that pilot length only affects the coding gain, and it does not change the diversity order of the system in the SNR range of interest.
For the channel length of requiring a minimum training length of 299 with two-transducer MIMO transmission, a larger pilot length was selected so as to obtain an accurate channel estimation and also mitigate the effect of additive noise.
Such choice of pilot length corresponds to a time duration of 60 ms, which is less than the channel coherence time about 200 ms corresponding to a maximum Doppler spread between Hz in this experiment.
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Fig. 5 Weighted SP recovery based on the diagnosed supports with different pilot lengths.
We compare the performance of the downlink channel estimation with different pilot lengths.
However, by careful modification of the pilot flame length, the turbulence decreased dramatically and the small droplet size aerosol can be tested.
Yost's prismatic "Boomtown" would be shot as a standard 44-minute pilot (the length of a show without ads) to be directed by Jon Avnet, a filmmaker ("Fried Green Tomatoes" and "Up Close and Personal"), not by Yost.
This result is surprising as it is different from previous results where the optimal positioning scheme was found to be spreading of groups of pilots whose length depended on the channels delay spread [29, 30].
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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com