A method for improving the performance of OFDM receiver and a receiver using the method

摘要

One or more parameters of a tuner (101) of a receiver (100) may be adjusted by generating for the receiver one or more control signals associated with one or more parameters and applying control signals (106) to the tuner during a cyclic prefix (CP) period. The receiver may generate a control strobe in synchronization with the CP period wherein the control strobe essentially begins with the CP period and has duration preferably shorter than the duration of the CP period. The duration of the control strobe may be chosen such that the one or more control signals, after being applied to the tuner, each reaches its steady state before the CP period lapses. The adjusted parameters, alone or in combination, may be, for example, the gain GLNA. of the low-noise-amplifier (LNA), the synthesizer's local frequency FLO, the DC correction level LDC, the power gain amplifier GPOA, and the I/Q error, and the like. The demodulator of the receiver may generate one or more of the control signals required for adjusting one or more parameters. One or more control signals may be determined according to previously received symbols/transmissions, and by determining the tuner's parameters to be adjusted based on the receiver's continued performance evaluations, and generating and applying the control signals to the tuner as a consequence of or in relation to these evaluations.