Table 5 Equivalencies among various optimal solutions

PMMSE-IAP and PMMI-IAP

None

PSVD-ATP and PSVD-IAP

L = P/m in (9a) and (11a)

PMMSE-IAP, PMMI-IAP, and PSVD-IAP

PSVD employs MMSE decoder; ${\mathbf{\Phi }}_{\mathbf{n}k}={\beta }_k{\mathbf{I}}_{u_k}$

PMMSE-ATP, PMMI-ATP, and PMBER-ATP

Only one data stream per pair

PMMSE-ATP, PMMI-ATP, PMBER-ATP, and PSVD-ATP

Only one data stream per pair; PSVD employs MMSE decoder; ${\mathbf{\Phi }}_{\mathbf{n}k}={\beta }_k{\mathbf{I}}_{u_k}$