Automatic gain control apparatus and method in a wireless communication system
AssigneeSamsung Electronics Co., Ltd.
InventorsSeung-Hee Han, Sung-Yoon Jung, Sang-Boh Yun, Joo-Hyun Lee
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Abstract
An apparatus and method for adaptively adjusting a target Received Signal Strength Indicator (RSSI) for Automatic Gain Control (AGC) in a full-duplex relay apparatus with an interference cancellation function. A Signal to Interference Ratio (SIR) estimation block estimates an SIR based on an interference signal estimated from a received signal and an interference-cancelled signal determined by cancelling the estimated interference signal from the received signal. A target RSSI determination block determines a target RSSI according to the estimated SIR. An AGC block adjusts a gain for the received signal based on the determined target RSSI.
Claims20
An Automatic Gain Control (AGC) apparatus in a relay apparatus supporting a full-duplex scheme, the relay apparatus configured for communication between a base station and a terminal, the AGC apparatus comprising:
- a controller configured to control:
- a Signal to Interference Ratio (SIR) estimation block configured to estimate an SIR based on an interference signal, which is estimated from a received signal and a signal transmitted from the relay apparatus, and an interference-cancelled signal determined by canceling the estimated interference signal from the received signal;
- a target Received Signal Strength Indicator (RSSI) determination block configured to determine a target RSSI optimized based on the estimated SIR and a maximum-rate Modulation and Coding Scheme (MCS) level for a particular resource region;
- and
- an AGC block configured to adjust a gain for the received signal based on the determined target RSSI.
An Automatic Gain Control (AGC) method performed in a relay apparatus supporting a full-duplex scheme, the relay apparatus configured for communication between a base station and a terminal, the method comprising:
- estimating a Signal to Interference Ratio (SIR) based on an interference signal, which is estimated from a received signal and a signal transmitted from the relay apparatus, and an interference-cancelled signal determined by canceling the estimated interference signal from the received signal;
- determining a target Received Signal Strength Indicator (RSSI) optimized based on the estimated SIR and a maximum-rate Modulation and Coding Scheme (MCS) level for a particular resource region;
- and
- adjusting a gain for the received signal based on the determined target RSSI.
An Automatic Gain Control (AGC) apparatus in a relay apparatus supporting a full-duplex scheme, the relay apparatus configured for communication between a base station and a terminal, the AGC apparatus comprising:
- a Signal to Interference Ratio (SIR) estimation block configured to estimate an SIR based on an interference signal, which is estimated from a received signal and a signal transmitted from the relay apparatus, and an interference-cancelled signal determined by canceling the estimated interference signal from the received signal;
- an interference signal estimation block configured to estimate the interference signal from the received signal and provide the estimated interference signal to the SIR estimation block;
- and
- a receiving modem configured to provide the interference-cancelled signal to the SIR estimation block;
- a target Received Signal Strength Indicator (RSSI) determination block configured to determine a target RSSI optimized based on the estimated SIR and a maximum-rate Modulation and Coding Scheme (MCS) level for a particular resource region;
- and
- an AGC block configured to adjust a gain for the received signal based on the determined target RSSI.
Dependencies are inferred from the claim text.