Title :
A Physical Layer Abstraction for Maximum Likelihood Demodulation of MIMO Signals
Author :
Ramésh, R. ; Koorapaty, Havish ; Cheng, Jung-Fu ; Balachandran, Kumar
Author_Institution :
Ericsson Res., Research Triangle Park, NC
Abstract :
We develop a physical layer abstraction to model the performance of MIMO with maximum likelihood demodulation (MLD) in a system simulation. MLD is inherently a non-linear process, and thus it is difficult to find a linear abstraction to its performance. The abstraction is based on bounds on performance obtained from the QR & QL decompositions of the channel. The accuracy of the abstraction is demonstrated using link simulations. In addition, the abstraction has low complexity. The model is used in a system simulation to evaluate the gains obtained with MLD.
Keywords :
MIMO communication; demodulation; maximum likelihood detection; MIMO signals; channel decomposition; linear abstraction; maximum likelihood demodulation; nonlinear process; physical layer abstraction; Additive white noise; Demodulation; Gaussian noise; MIMO; Maximum likelihood decoding; Maximum likelihood estimation; OFDM; Physical layer; Power system modeling; Signal to noise ratio;
Conference_Titel :
Vehicular Technology Conference, 2009. VTC Spring 2009. IEEE 69th
Conference_Location :
Barcelona
Print_ISBN :
978-1-4244-2517-4
Electronic_ISBN :
1550-2252
DOI :
10.1109/VETECS.2009.5073328
