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Table 1 Complexity for calculating the equalization matrices G and Ψ.

From: Frequency-domain equalization for OFDMA-based multiuser MIMO systems with improper modulation schemes

Operations

×

÷

+

-

For G

4K3N3 + K2N2 + 2KN

2K2N2

2K2N2 - KN

2K3N3

For Ψ

16K3N3 + KN3 + 3K2N2 + 3KN

8K2N2

2K2N2 + 2KN2 - 13KN

16K3N3