Dynamic adaptation of impaired RF communication channels in a communication system
AssigneeBroadcom Corporation
InventorsHanna S. Hsu, Daniel H. Howard
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Abstract
A system for dynamically adapting a communication channel to channel impairments includes a spectrum monitor configured to determine a channel impairment characteristic related to a channel impairment present in the channel. The system includes a system manager configured to determine a quality metric indicative of channel performance for the channel, and adjust one or more operating parameters in a set of channel operating parameters when the quality metric is not within a target range, whereby the communication channel operates in accordance with the adjusted parameters.
Claims35
A method of dynamically adapting a communication channel to channel impairments, comprising:
- (a) operating the communication channel in accordance with a set of operating parameters;
- (b) determining a channel impairment characteristic related to a channel impairment present in the communication channel;
- (c) determining a quality metric indicative of channel performance for the communication channel;
- and
- (d) adjusting one or more operating parameters in the set of operating parameters when the quality metric is not within a target range.
A method of detecting an impairment in a communication channel, comprising:
- (a) determining a first power density of a noise floor of the communication channel;
- (b) detecting a frequency domain peak indicative of the impairment;
- (c) determining a second power density in a frequency region coinciding with the detected frequency domain peak;
- and
- (e) declaring that the impairment is detected when the second power density exceeds the first power density by a predetermined amount.
A method of detecting an impairment in a communication channel, comprising:
- (a) determining a power of a noise floor of the communication channel;
- (b) detecting a time domain peak indicative of the impairment using time domain samples of the channel, the time domain peak including time domain samples;
- (c) determining if each of the time domain samples of the time domain peak has a respective power that exceeds the power of the noise floor by a predetermined amount;
- and
- (e) declaring that the impairment is detected when each of the time domain samples of the time domain peak has a respective power that exceeds the power of the noise floor by the predetermined amount.
A system for dynamically adapting a communication channel to channel impairments, the communication channel being configured to operate in accordance with a set of operating parameters, comprising:
- a spectrum monitor configured to
- determine a channel impairment characteristic related to a channel impairment present in the communication channel;
- and
- a system manager configured to
- determine a quality metric indicative of channel performance for the communication channel, and
- adjust one or more operating parameters in the set of operating parameters when the quality metric is not within a target range, whereby the communication channel operates in accordance with the adjusted parameters.
A system for dynamically adapting a communication channel to channel impairments, the communication channel being configured to operate in accordance with a first set of operating parameters, comprising:
- a memory for storing predetermined sets of operating parameters for the channel in one or more lookup tables;
- a spectrum monitor configured to
- determine a channel impairment characteristic related to a channel impairment present in the communication channel;
- and
- a system manager configured to
- determine a quality metric indicative of channel performance for the communication channel, and
- determine whether the quality metric is within a target range, and if the quality metric is not within the target range, then
- select, from among the predetermined sets of operating parameters, a second set of operating parameters based on the channel impairment characteristic.
Dependencies are inferred from the claim text.