Title :
Polarization dependency on frequency correlation of eigenvector for MIMO-OFDM systems
Author :
Yamada, Wataru ; Kita, Naoki ; Ando, Asuya ; Sato, Akio ; Takao, Tetsuya ; Mori, Daisuke
Author_Institution :
NTT Access Service Syst. Labs, Kanagawa, Japan
Abstract :
Various MIMO-OFDM systems have been studied and various transceiver methods for MIMO systems have been proposed. Most of these systems require estimation of the MIMO channel matrix and calculation of a control parameter to achieve the optimal reception for all sub-carriers. This calculation for all sub-carriers causes an increase in the calculation load. This paper presents frequency correlation of a MIMO channel matrix that reduces the calculation load in a real indoor environment. The eigenvector correlation of the wideband MIMO channel matrix obtained from an actual indoor environment is used as an evaluation parameter of the frequency correlation characteristic.
Keywords :
MIMO systems; OFDM modulation; channel estimation; correlation methods; eigenvalues and eigenfunctions; electromagnetic wave polarisation; indoor radio; microwave propagation; 5.2 GHz; channel matrix estimation; eigenvector frequency correlation; frequency correlation polarization dependency; indoor environment; sub-carrier optimal reception control parameter; transceiver methods; wideband MIMO-OFDM systems; Control systems; Data communication; Eigenvalues and eigenfunctions; Frequency measurement; Indoor environments; MIMO; Optimal control; Polarization; Wideband; Wireless LAN;
Conference_Titel :
Vehicular Technology Conference, 2004. VTC2004-Fall. 2004 IEEE 60th
Print_ISBN :
0-7803-8521-7
DOI :
10.1109/VETECF.2004.1399940
