Automatic gain control (AGC) is very essential for Orthogonal Frequency Division Multiplexing (OFDM) receivers

because the significant features of OFDM signals are large dynamic range and high Peak-to-Average power Ratio (PAR).An adaptive AGC strategy is proposed to improve the convergence speed and maintain the stability of AGC circuits

in which Mean Absolute Deviation (MAD) architecture with hybrid gain compensation parameters and programmable power deviation reference is employed.At the same time

to reduce the power dissipation of receivers

an adjustment successful signal can be given for following digital processing modules.Besides

it can be employed in multi-antenna OFDM systems.