| 摘要 |
A system includes an input, a variable gain amplifier (VGA), and an automatic gain control (AGC) module. The input receives an input signal. The input signal includes frames of N symbols modulated using orthogonal frequency division multiplexing (OFDM), wherein a cyclic prefix (CP) precedes each of the N symbols, and wherein N is an integer greater than 1. The VGA provides a gain when amplifying the input signal. The AGC module selectively adjusts the gain of the VGA during the CP preceding M of the N symbols, wherein M is an integer greater than 1.
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