A 2x2 multiple-input multiple-output (MIMO) architecture using dual-polarized antennas (DPAs) is considered with orthogonal frequency division multiplexing (OFDM). The performance of DPAs is evaluated for adaptive polarization (AP) transmissi

正交频分复用的信道估算算法，利用最小二乘法和最小均方误差方法(channel estimate use LS and MMSE)