Dynamic Transmit Power Control for Non-Flat PSD Masks
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Solution Overview
Problem
Current power line communication systems face low throughput when operating under non-flat transmit Power Spectral Density (PSD) masks, as they lack mechanisms to adjust aggregate transmit power and PSD effectively across different frequency bands, leading to suboptimal Signal-Noise ratios and throughput.
Innovation Solution
A dynamic transmit power control method that collects communication and prediction data to adjust the transmit power spectrum density mask, allowing for compliance with non-flat PSD masks by adjusting maximum/minimum PSDs, aggregate power, performing power cutback, or gain scaling across multiple frequency bands, ensuring better Signal-Noise ratios and throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional power line communication systems transmit signals with PSDs equal to reference PSDs of flat transmit PSD mask in low frequency band, then throughput is maximized, but the system cannot comply with non-flat transmit PSD mask requirements in high frequency bands
Solution Approach 1:
The patent implements dynamic transmit power control that adjusts the compliant transmit PSD mask based on collected communication data and prediction data. The system dynamically modifies maximum/minimum PSDs, aggregate power, and performs power cutback or gain scaling across different frequency bands, transforming the static flat PSD mask approach into a dynamic adaptive system that can comply with non-flat transmit PSD mask requirements while maintaining optimal throughput
Solution Approach 2:
The system changes key parameters including maximum PSD, minimum PSD, aggregate transmit power, and PSD distribution across frequency bands. By adjusting these parameters based on collected data and prediction data, the system generates performance-related operations that maximize throughput while complying with non-flat transmit PSD mask regulations in different frequency bands
2Adaptability or versatility
If the system adjusts aggregate transmit power and PSD to comply with non-flat transmit PSD mask, then compliance is achieved, but throughput performance deteriorates without specific operation mechanisms
Solution Approach 1:
The patent implements a feedback mechanism where the system collects communication data and prediction data, then uses this information to adjust the compliant transmit PSD mask. The receiving end feeds back performance information to the transmitting end, enabling continuous optimization of PSD distribution across frequency bands to maximize throughput while maintaining compliance with non-flat transmit PSD mask requirements
Solution Approach 2:
The system performs preliminary adjustments to the compliant transmit PSD mask by collecting prediction data before actual transmission. This preliminary action allows the system to pre-optimize PSD distribution and power allocation across frequency bands, ensuring both compliance with non-flat transmit PSD mask and maximized throughput performance from the outset
Data Source
AI summary
The present discloses a dynamic transmit power control method for a power line communication (PLC) system. The dynamic transmit power control method includes steps of collecting a data; and adjusting a compliant transmit power spectrum density (PSD) mask according to a non-flat transmit PSD mask and the data; wherein the compliant transmit PSD mask complies with the non-flat transmit PSD mask, which comprises a plurality of reference PSDs corresponding to a plurality of frequency bands.