Title :
On the Convergence Property of an MMSE Based Multiuser MIMO Turbo Detector with uplink Precoding
Author :
Karjalainen, Juha ; Matsumoto, Tad
Author_Institution :
Centre for Wireless Commun., Univ. of Oulu, Oulu
Abstract :
In this the paper, impact of minimum mean squared error (MMSE) based linear precoding on the convergence of iterative multiuser detector in multiuser multiple input multiple output (MIMO) uplink single carrier communications is studied. The influence of linear precoding on iterative MMSE based multiuser detector is investigated via the multi-dimensional EXIT analysis. It is shown that the use of the linear precoding enhances the separability of the EXIT planes of the simultaneous streams over without precoding; This invokes the idea that different code rate be allocated to the each transmitted streams at the transmitter. Especially, in the case of multiuser communication precoding has significant roles in the convergence property of iterative detector.
Keywords :
MIMO communication; convergence of numerical methods; iterative methods; least mean squares methods; linear codes; multiuser detection; precoding; radio links; turbo codes; MMSE; convergence property; extrinsic information transfer; iterative multiuser detector; minimum mean squared error; multidimensional EXIT analysis; multiuser MIMO turbo detector; single carrier communication; uplink linear precoding; Base stations; Convergence; Detectors; Feedback; Frequency domain analysis; MIMO; Mutual information; OFDM; Silicon carbide; Transmitters;
Conference_Titel :
Communications, 2008. ICC '08. IEEE International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-2075-9
Electronic_ISBN :
978-1-4244-2075-9
DOI :
10.1109/ICC.2008.772
