Wavefront Multiplexing for Dynamic Satellite Power Allocation
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Solution Overview
Problem
Current satellite communication systems face limitations in dynamically allocating excess radiated power from multiple transponders or satellites to enhance signal power levels without affecting the receiver or propagation segments, and existing technologies do not allow for efficient use of unused power assets in a dynamic manner.
Innovation Solution
A dynamic communication system that utilizes Wavefront-Multiplexing and adaptive equalization to combine power from multiple transponders, allowing operators to dynamically allocate power through the transmitter segment without modifying the satellite configuration, enabling coherent power combination and improved radiated power levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If dynamic power allocation is implemented through transmitter segment, then power levels of transmitted signals are improved, but system complexity increases
Solution Approach 1:
The system divides the satellite communication system into three independent segments: transmitter segment (ground-based), propagation segment (satellite), and receiver segment (ground-based). The dynamic power allocation function is isolated to the transmitter segment only, allowing power optimization without affecting or requiring modifications to the satellite or receiver segments. This segmentation enables the complex power allocation logic to be contained in one location only.
Solution Approach 2:
The system implements dynamic power allocation that can continuously adjust the radiated power levels of different transponders based on real-time conditions. The power allocation is not fixed but can be modified on-the-fly by the transmitter segment controller, enabling adaptive optimization of signal power levels without requiring physical reconfiguration of the satellite hardware.
2Productivity
If excess power from multiple transponders is combined, then transmission efficiency is improved, but device complexity increases
Solution Approach 1:
The system combines the radiated power from multiple transponders at the transmitter segment to create a unified high-power signal for transmission. Instead of transmitting separate signals from each transponder, the system merges their power output through wavefront multiplexing techniques, achieving improved transmission efficiency and extended coverage while managing the complexity through intelligent signal processing.
3Use of energy by moving object
If wavefront multiplexing is used to allocate power dynamically, then power usage is optimized, but ease of operation decreases
Solution Approach 1:
The system introduces a ground-based transmitter segment controller as an intermediary between the operator and the satellite transponders. This intermediary handles the complex wavefront multiplexing and dynamic power allocation calculations, shielding the end user from the operational complexity while enabling optimized power distribution across multiple transponders based on real-time channel conditions.
Data Source
AI summary
At a ground-based transmitting system, a first processor receives and performs an N-to-N wavefront-multiplexing (WFM) transform on N signals and outputs N WFM signals, N>1. The N WFM signals are orthogonal to one another and each of which is a unique linear combination of the N signals. The N-to-N WFM transform has a unique inverse. A transmit back-end transmits the N WFM signals over a transmission medium via propagation channels. At a user terminal, a receive front-end receives the N transmitted WFM signals and generates N received WFM signals. An equalizer generates N equalized signals from the N received WFM signals. A second processor performs the unique inverse of the N-to-N WFM transform on the N equalized signals and outputs N wavefront demultiplexed signals, each of which is a unique linear combination of the N equalized signals and is a recovered version of a respective one of the N signals.