Performance of MIMO-OFDM system based on channel estimation for IEEE 802.11n

Abstract

IEEE 802.11n is considered as the current development of standard communication WLAN IEEE 802.11 providing the increase throughput relatively standard to IEEE802.11a/g. The increase of various transmission channel in the wireless communication makes the antenna receiver work harder as the noise and fading happen in the channel. A certain method is needed to predict the channel description between the transmitter and receiver for standard communication WLAN IEEE802.11n. This research does an estimated channel simulation using minimum mean square error (MMSE) method on the MIMO-OFDM system in scheme antennas 2 × 2 and 2 × 4. The rectangular shaping on the time domain is used as channel model approach. The operation of system is stated into impulse responses sent from Tx transmitter antenna to Rx receiver output from the channel estimated output. The computer simulation program shows that the estimated channel works well on the antenna schemes 2 × 2 and 2 × 4.