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Table 2 Comparison of detection complexity (γ)

From: EQSM-based multiuser MIMO downlink transmission for correlated fading channels

Configuration/system

BD SMux

BD EQSM

PDC SMux

PDC EQSM

BD-PDC EQSM

8 bpcu

12,032

9088

4608

3456

3456

(4·2)×8

(100%)

(76%)

(38%)

(29%)

(29%)

12 bpcu

641,024

241,664

147,456

55,296

55,296

(4·4)×16

(100%)

(38%)

(23%)

(8.6%)

(8.6%)

  1. The conventional BD-MIMO-SMux systems are considered as reference with 100% of complexity