Fisher-Information-Matrix Based Analysis of Semiblind MIMO Frequency Selective Channel Estimation

<table>Rank deficiency of the complex MIMO FIM versus number of transmitted pilot symbols (<svg height="17.360001" id="M300" style="vertical-align:-4.74141pt" version="1.1" viewbox="0 0 18.30125 17.360001" width="18.30125" xmlns="http://www.w3.org/2000/svg">
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<tspan style="font-size: 12.50px; " x="0" y="0">6</tspan>
<tspan style="font-size: 12.50px; " x="9.0272522" y="0">×</tspan>
<tspan style="font-size: 12.50px; " x="19.804941" y="0">5</tspan>
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</svg> MIMO FIR system of length <svg height="16.014999" id="M302" style="vertical-align:-3.22282pt" version="1.1" viewbox="0 0 46.466251 16.014999" width="46.466251" xmlns="http://www.w3.org/2000/svg">
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<tspan style="font-size: 8.75px; " x="0" y="0">ℎ</tspan>
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fig3

Figure 3

Figure 3: Fisher-Information-Matrix Based Analysis of Semiblind MIMO Frequency Selective Channel Estimation 