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Table 5 Equivalencies among various optimal solutions

From: Practical decentralized high-performance coordinated beamforming for both downlink and uplink in time-division duplex systems

Equivalent solutions Conditions
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; Φ n k = β k 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; Φ n k = β k I u k