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The I/Q imbalance compensation for different fading environments and modulation orders, have been investigated in[3].
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Contemplative orders have declined.
"Orders have been pulled forward.
In practice, communication systems without pilots typically have low modulation orders and relatively high SNR a situation where we expect the GMM algorithm to perform well.
In the 60GHz millimeter-wave radar communication, in order to achieve the ultra-high data rate with the regulated transmission bandwidth, high-order modulations have widely been adopted to make efficient use of the spectrum.
On the other had, for high modulation orders, as for QAM64 and QAM256, the TBICM-ID-SSD receiver should be configured in TBICM-SSD mode which provide less complexity for identical error rate performances.
These modulation schemes are binary phase shift keying (BPSK), quaternary phase shift keying (QPSK) and M-ary quadrature amplitude modulation (QAM) with modulation orders and.
Order had been partly restored.
However, the BERs vary significantly over some high-order (beyond ~100th) subcarriers even though they have the same modulation order.
It can be seen that up to 40% of the scheduled MU-MIMO pairs have the same modulation order (2-2) QPSK-QPSK, (4-4) 16Qand16QAM, 64QAM-64QAM4QAM-64QAM.
This is obvious according to Corollary 2. As stated previously, we have proved the modulation order relationship between 4-WFRFT and M-WFRFT via Theorem 1.
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