Abstract—The combination of Multiple-Input Multipleoutput (MIMO) and Orthogonal Frequency Division Multiplexing (OFDM) has been viewed as the trend of the new wireless LAN technology. In this paper, the design of an up-to-date 2 x 2 Space-Time Block Coded (STBC) MIMOOFDM baseband receiver is presented with reference to an IEEE 802.11 n proposal. To solve possible different carrier frequency offsets between the two transmit antennas due to the antenna resistance match problem, this work proposes a new carrier frequency offset tracking method at the receiver. The overall design is verified on the Xilinx FPGA with an implementation loss of about 1.5 dB.

Index Terms—MIMO-OFDM, Wireless LAN, Space-Time Block Code (STBC), Carrier frequency offset, Transmit antenna, IEEE 802.11n

Cite: Li-Wen Hsu and Dah-Chung Chang, "2X2 STBC MIMO OFDM RECEIVER DESIGN FOR WLAN WITH ESTIMATION OF DIFFERENT TRANSMIT CARRIER FREQUENCY OFFSETS," International Journal of Electrical and Electronic Engineering & Telecommunications, Vol. 3, No. 1, pp. 1-13, January 2014.