A Fast and Low complexity Adaptive I/Q Imbalance Compensation for OFDM Systems using set-membership Filtering with Adaptive step size

In direct-conversion orthogonal frequency division multiplexing receivers, the compensation of I/Q imbalance is critical. In this paper, using set-membership filtering with variable step size is proposed to increase convergence speed and decrease the average of calculations. The results indicate that the proposed algorithm achieve a significant improvement in the bit error rate (BER) performance while the complexity is decreased.

کلیدواژه ها:

I/Q imbalance ، Orthogonal frequency division multiplexing (OFDM) ، MSE Analysis ، Set-membership Filtering