Wavefront Multiplexing for Dynamic Satellite Transponder Power Sharing

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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 available satellite bandwidth and power assets to meet changing market demands.

Innovation Solution

A dynamic communication system that uses Wavefront-Multiplexing and adaptive equalization to combine power from multiple transponders, allowing operators to allocate power dynamically through the transmitter segment without modifying the satellite configuration, and employs Wavefront-De-Multiplexing to recover individual signals at the receiver segment, ensuring coherent power combination and optimal signal transmission.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Power

If traditional bent pipe mode is used for satellite broadcasting, then signal transmission is simple and reliable, but power levels of transmitted signals cannot be dynamically improved without affecting receiver and propagation segments

Engineering Contradiction:

Improvesignal power levelVSAvoidsystem complexity

Core Design Contradiction:

PowerVSDevice complexity

Solution Approach 1:

The system divides the satellite communication into separate functional segments: uplink signal combination segment (where multiple signals are combined with different power levels), propagation segment (satellite transmission), and downlink receiver segment. This allows power optimization in the uplink without affecting the simplicity and reliability of the downlink receiver and satellite propagation segments.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The system introduces dynamic power allocation capability where the relative power levels of multiple input signals can be adjusted in real-time based on market demands and service requirements, while the satellite configuration remains static. This dynamic control is achieved through the uplink signal combination architecture.

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If satellite bandwidth and power assets are allocated statically, then system design is simple and stable, but the system cannot adapt to changing market demands

Engineering Contradiction:

Improvepower allocation flexibilityVSAvoidpower allocation system complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The system implements dynamic power allocation that allows operators to adjust the relative power levels of different input signals based on changing market demands, service priorities, and bandwidth utilization requirements. This dynamic capability is achieved without modifying the satellite configuration, maintaining system stability while enhancing adaptability.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system changes the power level parameter of input signals dynamically at the uplink segment, allowing flexible allocation of satellite bandwidth and power assets. By adjusting signal power levels rather than physical configuration, the system achieves adaptability to market demands while avoiding complex hardware modifications.

Inventive Principle:

Principle #35Parameter changes

3Quantity of substance

If multiple transponders are used to increase bandwidth capacity, then more signals can be transmitted, but excess radiated power cannot be efficiently utilized

Engineering Contradiction:

Improvebandwidth capacityVSAvoidexcess radiated power utilization

Core Design Contradiction:

Quantity of substanceVSLoss of energy

Solution Approach 1:

The system combines multiple input signals with different power levels into a composite signal that utilizes the full bandwidth capacity of multiple transponders. By merging signals with complementary power characteristics, the system efficiently utilizes both the bandwidth capacity and the excess radiated power that would otherwise be wasted, achieving optimal resource utilization across the satellite constellation.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS8111646B1Communication system for dynamically combining power from a plurality of propagation channels in order to improve power levels of transmitted signals without affecting receiver and propagation segments

Publication Date: 2012.02.07 SPATIAL DIGITAL SYST

AI summary

The present invention relates to a communication system and method that allows a transmitter segment (ground end of uplink segment) to dynamically combine power from plurality of propagation channels (transponders) in order to improve power levels of signals being transmitted, without affecting the receiver segment (user end of downlink segment) and the propagation segment (space segment), and without modifying the configuration of the propagation apparatus (satellite). Specifically, the transmitter segment generates mixtures of input signals by using Wavefront-Multiplexing and transmits the wavefront-multiplexed (WFM) signals through propagation channels to a receiver segment that coherently separates the mixtures of received WFM signals by using adaptive equalization and Wavefront-De-Multiplexing. The WFM signal mixtures allow an operator, or automated system, at the transmitter segment to dynamically allocate equivalent channel (transponder) powers according to continuously changing market demands by dynamically including change of relative input powers into ratios of the WFM signal mixtures being transmitted.