Title :
Parameter-Optimized Extended MMSE-DFE based Detection for V-BLAST
Author :
Pham, Van-Su ; Le, Minh-Tuan ; Mai, Linh ; Yoon, Giwan
Author_Institution :
Commun. Electron. Lab., Inf. & Commun. Univ., Daejeon
Abstract :
In this work, the optimal value of parameter for complexity reduction of an Extended MMSE-DFE based Detection for V-BLAST system is considered. The detection, which is based on the fast sphere decoder for Phase-Shift Keying (PSK) signals in uncoded V-BLAST systems, namely PSD, generalizes the parameter beta in the extended channel matrix. It is shown that for M-ary PSK (M-PSK) signal, the PSD is always an optimal decoder irrespective of beta. In addition, with appropriately set the value of beta the PSD can operate at optimal low, i.e. minimum, computational load. In this work, from computer simulation, the trend of impact of beta on the complexity of the detection is presented.
Keywords :
channel coding; decision feedback equalisers; decoding; least mean squares methods; matrix algebra; optimisation; phase shift keying; signal detection; space-time codes; M-ary PSK; V-BLAST; decision feedback equaliser; extended channel matrix; fast sphere decoder; minimum mean square error methods; parameter-optimized extended MMSE-DFE detection; phase-shift keying signal; vertical Bell Labs layered space-time system; Computer simulation; Laboratories; MIMO; Matrix decomposition; Maximum likelihood decoding; Maximum likelihood detection; Phase detection; Phase shift keying; Receiving antennas; System performance;
Conference_Titel :
Advanced Communication Technology, 2008. ICACT 2008. 10th International Conference on
Conference_Location :
Gangwon-Do
Print_ISBN :
978-89-5519-136-3
DOI :
10.1109/ICACT.2008.4494130
