Radio receiver and gain control method
AssigneeFujitsu Limited
InventorsTadahiro Sato, Akifumi Adachi
Life of this patent
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Abstract
A radio receiver includes a branching unit, a first gain-control system, a second-gain control system, and a signal processing unit. The branching unit branches a radio signal received by the radio receiver into two signals. The first-gain control system performs a gain control of a pilot signal in one of branched signals, and the second gain control system performs a gain control of a data signal in another of the branched signals. The signal processing unit synchronizes frames in the received radio signal. The signal processing unit outputs a gain signal to each of the first gain-control system and the second gain-control system. The first gain-control system and the second gain-control system perform the gain controls based on the gain signal.
Claims18
A radio receiver comprising:
- a receiving unit configured to receive a radio signal in which a first signal and a second signal are time-multiplexed in a frame;
- a gain-control unit configured to perform a gain control on the radio signal with a different gain for each of the first signal and the second signal;
- and
- a power detecting unit configured to detect a power of the received radio signal in each time slot,
- wherein the gain-control unit performs the gain control when a change in power detected by the power detecting unit between time slots is large, while the gain-control unit does not perform the gain control when the change in power detected by the power detecting unit between the time slots is not large.
A gain control method performed by a processor comprising:
- receiving by an antenna a radio signal in which a first signal and a second signal are time-multiplexed in a frame;
- performing by the processor a gain control on the radio signal with a different gain for each of the first signal and the second signal;
- detecting by the processor a power of the received radio signal in each time slot;
- and
- performing by the processor the gain-control when a change in detected power between time slots is large, and not performing the gain-control when the change in detected power between time slots is not large.
Dependencies are inferred from the claim text.