Title :
MIMO systems: optimizing the use of eigenmodes
Author :
Getu, Beza Negash ; Andersen, Jørgen Bach ; Farserotu, John R.
Author_Institution :
Center for PersonKommunikation, Aalborg Univ., Denmark
Abstract :
Multiple parallel orthogonal transmission links may be found from a MIMO system using the eigenvectors derived from the SVD of the channel matrix. These transmission links are called eigenmodes. For (Mt, Nr) = (8, 4) and (Mt, Nr) = (4, 2) MIMO systems, the SER performance of all the available eigenmodes have been determined for Rayleigh and Ricean fading channels. Adaptive modulation has been performed on eigenmodes to extract the highest possible throughput (capacity) and at the same time all the functional modes satisfying a required SER. By spatially multiplexing on selected eigenmodes, there will he flexibilities in fulfilling the spectral efficiency and SER system requirements.
Keywords :
MIMO systems; Rayleigh channels; Rician channels; adaptive modulation; eigenvalues and eigenfunctions; matrix algebra; multiplexing; optimisation; singular value decomposition; MIMO systems; Rayleigh fading channels; Ricean fading channels; adaptive modulation; channel matrix; eigenmodes; eigenvectors; parallel orthogonal transmission links; spectral efficiency; Antenna theory; Bit error rate; Eigenvalues and eigenfunctions; Fading; MIMO; Milling machines; Rayleigh scattering; Signal processing algorithms; Throughput; Transmitters;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2003. PIMRC 2003. 14th IEEE Proceedings on
Print_ISBN :
0-7803-7822-9
DOI :
10.1109/PIMRC.2003.1260287
