Back to results
US 2013/0156137 A1Published application
Receiving apparatus that receives packet signal
AssigneeSanyo Electric Co., Ltd.
InventorKeisuke HIGUCHI
Life of this patent
Estimating the term…
Abstract
An RF unit receives predetermined signals. The RF unit amplifies the received signals. A gain control unit controls the gain at the RF unit based on the amplified signal and has the RF unit use the controlled gain. The gain control unit performs different controls on the received signals, depending on the case when the received signal is a known signal placed in the beginning of packet signal and the case when the received signal is a signal other than the packet signal.
Claims14
A receiving apparatus comprising:
- a receiving unit configured to receive a signal;
- an amplifier configured to amplify the signal received by the receiving unit;
- and
- a control unit configured to control a gain in the amplifier based on a signal amplified by the amplifier and configured to have the amplifier use the controlled gain,
- wherein the control unit performs different controls on the signals received by the receiving unit, depending on a case when the received signal is a known signal placed in the beginning of packet signal or a case when the received signal is a signal other than the packet signal.
2 more elements
A receiving apparatus comprising:
- a receiving unit configured to receive a signal;
- an amplifier configured to amplify the signal received by the receiving unit;
- and
- a control unit configured to control a gain in the amplifier based on a signal amplified by the amplifier and configured to have the amplifier use the controlled gain,
- wherein, when the signal received by the receiving unit is a known signal placed in the beginning of packet signal, the control unit starts to perform control using a predetermined initial value, and
- when the receiving unit stops receiving the packet signal, the control unit performs another control using the predetermined initial value.
3 more elements
A receiving apparatus comprising:
- a receiving unit configured to receive a signal;
- an amplifier configured to amplify the signal received by the receiving unit;
- and
- a control unit configured to control a gain in the amplifier based on a signal amplified by the amplifier and configured to have the amplifier use the controlled gain,
- wherein the control unit changes frequency, at which the gain is updated, depending on a case when the signal received by the receiving unit is a known signal placed in the beginning of packet signal or a case when the signal received by the receiving unit is a signal other than the packet signal.
2 more elements
A receiving apparatus comprising:
- a receiving unit configured to receive a packet signal having a known signal placed in the beginning;
- an amplifier configured to amplify the packet signal received by the receiving unit;
- and
- a control unit configured to control a gain in the amplifier based on the known signal in the packet signal amplified by the amplifier and configured to have the amplifier use the controlled gain,
- the control unit including:
- an averaging unit configured to sequentially average the magnitude of a signal amplified by the amplifier in a period shorter than that of the known period;
- and
- a decision unit configured to adjust the gain until when the magnitude thereof averaged sequentially by the averaging unit lies within a target range and configured to fix the gain when the magnitude thereof averaged sequentially by the averaging unit lies within the target range,
- wherein the decision unit sets the widths of the target range such that the width thereof in a case where the gain is smaller than a maximum value differs from that in a case where the gain is the maximum value.
6 more elements
Dependencies are inferred from the claim text.