Parallel Data Stream Processing in Satellite Modems
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Solution Overview
Problem
Current satellite communication systems face challenges in efficient in-orbit tests (IOTs) due to high measurement time and costs, limited data rate per communication link, spectrum fragmentation, and capacity limitations caused by analog interference, which hinder the effective utilization of transponder bandwidth and power.
Innovation Solution
The method involves parallel processing of multiple data streams across multiple channels and frequency bands on the physical layer, using an INRADIOS modem that modulates and sums data streams before transmission, and compensates for non-linear distortions by estimating interference processes, allowing for simultaneous data transmission during IOTs and improved data throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional sequential measurement methods are used for in-orbit tests, then measurement accuracy can be maintained, but measurement time increases and revenue loss increases
Solution Approach 1:
The patent combines multiple measurement functions into a single integrated measurement signal that can be transmitted simultaneously across multiple frequency bands. The measurement signal includes multiple sub-signals, each modulated with different spreading codes, allowing parallel measurement of multiple parameters (carrier frequency, phase noise, adjacent channel interference) without sequential interruption of data transmission.
Solution Approach 2:
The measurement signal is segmented into multiple sub-signals, each carrying specific measurement information for different frequency bands or measurement parameters. This segmentation allows the measurement system to handle multiple measurement tasks simultaneously while maintaining accuracy through dedicated signal paths for each measurement function.
2Productivity
If data rate per communication link is increased, then productivity improves, but capacity limitations from analog interference and regulatory power restrictions worsen
Solution Approach 1:
The patent replaces traditional analog signal processing with digital signal processing techniques. Digital modulation and demodulation methods are used to transmit data across multiple frequency bands, eliminating the need for analog signal handling that causes interference. The system uses digital spread spectrum techniques to modulate measurement signals and data streams, which can be processed digitally without introducing analog interference.
Solution Approach 2:
The patent transitions from single-frequency analog transmission to multi-frequency digital transmission. By distributing data across multiple frequency bands and using spread spectrum techniques, the system increases data rate capacity without being limited by analog interference constraints. The measurement and data transmission occur in the digital domain rather than the analog domain.
3Adaptability or versatility
If spectrum fragmentation is addressed by traditional methods, then regulatory compliance is maintained, but transponder bandwidth utilization decreases
Solution Approach 1:
The patent implements dynamic spectrum allocation where the system can adaptively assign frequency bands and transmission parameters based on current spectrum availability and fragmentation conditions. The measurement and data transmission systems dynamically adjust their operation across fragmented spectrum pieces, maximizing utilization of available transponder bandwidth while complying with regulatory requirements.
Solution Approach 2:
The patent creates a universal measurement and communication system that can operate across all available frequency bands regardless of fragmentation. The same system architecture handles measurement and data transmission across multiple frequency bands simultaneously, making the system adaptable to any spectrum fragmentation pattern while maximizing overall bandwidth utilization.
Data Source
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AI summary
The invention, which relates to an assembly and a method for the parallel processing of data streams by means of satellite communication connections, is aimed at providing a method and assembly of the type mentioned above, by way of which the achievable data rate/data throughput of the communication connection is improved and the complexity as well as the time required for testing the satellite communication connection are reduced. The assembly achieves this aim by designing the first sub-assembly to have, on the transmitter side, a modem having a plurality of inputs and an output for a total data stream, wherein the modem comprises a plurality of signal paths connected in parallel, wherein in each signal path a modulation stage, a stage for sampling the modulated signals and a mixer stage are arranged, by connecting the outputs of all mixer stages to inputs of a summation stage, and by connecting the output of the summation stage to the output of the modem, by providing the second sub-assembly with an input for actuating the sub-assembly by means of initialization data, said input being connected to an assembly for controlling the test operation, by connecting said sub-assembly to a downstream carrier management assembly which has a plurality of outputs, by connecting each output to a test sequence generating unit for generating a test sequence for each carrier, by connecting the outputs of all test sequence generating units to a parallel/serial converter assembly, which is connected downstream of a filter assembly, and by connecting the output of the filter assembly to the output of the second sub-assembly.