Automatic gain control of multiple antenna OFDM receiver

Details Automatic gain control of multiple antenna OFDM receiver Automatic gain control of multiple antenna OFDM receiver

2007-10-02

2007-10-02

Urban, Edward F. (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Local control of receiver operation

C455S136000, C455S250100, C375S345000

Reexamination Certificate

active

10605563

ABSTRACT:
A method includes amplifying the plurality of received signals, generating a plurality of time domain samples of the amplified signals with at least an analog-to-digital converter (ADC), determining at least a candidate power according to root-mean-square (RMS) powers of a first group of symbols received at the receiver antennas, and setting the gain of the amplifier according to a selected candidate power with the processor. The received RMS power for one antenna is determined as the square root of the averaged product of each received symbol and its complex conjugate for all symbols of the first group. The candidate power can be determined considering a subgroup of antennas using an RMS value, an arithmetical mean value, or a geometric mean value of this subgroup.

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