Title :
Semi-blind channel estimation of MIMO-OFDM systems based on RBF network
Author :
Hao jie ; Yang Ling
Author_Institution :
Sch. of Electr. Eng., Northwest Univ. for Nat., Lanzhou, China
Abstract :
A Semi-blind channel estimation method of MIMO-OFDM systems based on RBF (Radial Basis Function) network is proposed in this paper, with the improved semi-blind cost function based on LS criterion, and using RBF network to substitute the function iteration. Then makes use of the improved PSO algorithm to optimize the parameter of RBF network, we also use the improved network to estimate the channel response. Finally, the simulation results show the advantages of RBF network when processing the problem of channel estimation.
Keywords :
MIMO communication; OFDM modulation; channel estimation; particle swarm optimisation; radial basis function networks; MIMO-OFDM systems; PSO algorithm; RBF network; channel response; radial basis function network; semi-blind channel estimation; semi-blind cost function; MIMO-OFDM systems; RBF network; Semi-blind channel estimation; improved RBF network;
Conference_Titel :
Wireless Mobile and Computing (CCWMC 2011), IET International Communication Conference on
Conference_Location :
Shanghai
DOI :
10.1049/cp.2011.0872
