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In LTE, this is not of concern due to the defined pilot symbol pattern.
Figure 1 Pilot symbol pattern utilized in LTE over time and frequency for four antennas.
Intelligent icons indicate the probability of the occurrence of a symbol pattern.
Due to the orthogonal pilot symbol pattern utilized in LTE, the MIMO channel can be estimated as NtNrindividual SISO channels.
Such pilot symbol pattern allows to estimate a MIMO channel as multiple, individual single input single output (SISO) channels as long as the spatial correlation is neglected.
In case of a two-dimensional linear interpolation with LTE pilot symbol pattern using an LS channel estimator, we find c e =0.6623 evaluating Equation (30).
Similar(51)
Finally, the proposed architectures support flexible patterns i.e. patterns with a "don't care" symbol, patterns with a complement symbol and patterns with a class symbol.
Kaplan wanted the shirts to be more sophisticated than the originals and selected to have the Starfleet symbol patterned on them.
In Figure 9, all different possibilities of four symbols (a, b, c, d) in a three-symbol pattern (aaa, aab… ddd) are shown.
Its depends only on the pilot symbols pattern.
In Comb-type pilot symbols pattern, we have time-domain windowing and frequency-domain interpolation.
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