Blind and Semi-Blind Sparse Channel Identification in MIMO OFDM Systems

Date Added: Apr 2011
Format: PDF

Multimedia applications in wireless communication require very high data rate transmissions. To fulfil this demand, several methods have been proposed. Among them, Orthogonal Frequency Division Multiplexing (OFDM) and Multiple-Input Multiple-Output (MIMO) have emerged as two main techniques in the Long Term Evolution (LTE) and the future Fourth-Generation (4G) communications. In MIMO-OFDM systems, a plethora of methods have been developed for getting an accurate estimate of the channel. These methods can be classified into three classes, namely, training-based methods, blind methods and semi-blind methods.