Title :
On the Relation Between PDA and MMSE-ISDIC
Author :
Cao, Feifei ; Li, Jiandong ; Yang, Jiawei
Author_Institution :
Xidian Univ., Xi´´an
Abstract :
The probabilistic data association (PDA) and the minimum-mean-square-error filtering based iterative soft decision interference cancellation (MMSE-ISDIC) are two popular detectors for systems with co-channel interference. In this letter, the relation between the two detectors is analytically derived for the V-BLAST systems. The two detectors perform in a similar manner, whereas differ in the metric calculation. It is proved that for both original signal model and decorrelated signal model, the PDA and the MMSE-ISDIC detectors are equivalent in terms of performance for both uncoded and coded systems.
Keywords :
cochannel interference; interference suppression; iterative methods; least mean squares methods; probability; signal detection; MMSE-ISDIC detectors; V-BLAST systems; co-channel interference; decorrelated signal model; iterative soft decision interference cancellation; minimum-mean-square-error filtering; probabilistic data association; uncoded systems; Decorrelation; Detectors; Filtering; Gaussian approximation; Gaussian noise; Interference cancellation; Multiaccess communication; Receiving antennas; Signal analysis; Transmitting antennas; Iterative soft decision interference cancellation; MIMO; V-BLAST; probabilistic data association;
Journal_Title :
Signal Processing Letters, IEEE
DOI :
10.1109/LSP.2007.896157
