Uplink system of subcarrier multiplexing optical network of filter based multicarrier modulation

Abstract

The invention provides an uplink system of a subcarrier multiplexing optical network of filter based multicarrier modulation. The system comprises access control modules, filter based multicarrier modulation modules, subcarrier modulation modules, a multiplexing module, a feed line type fiber, a de-multiplexing module, photoelectric detectors, subcarrier demodulation modules and uplink data reception modules that are successively connected. Data generated by the access control modules is modulated in the filter based multicarrier modulation method, modulated user data is modulated to different optical subcarriers and transmitted via RF subcarrier modulation of optical carrier waves, and data from different units is multiplexed to uplink fiber channels. Filter based multicarrier modulation technology is combined with subcarrier multiplexing technology so that frequency spectrum resources of uplinks are utilized in high efficiency, interference among symbols and subcarriers of uplink users can be effectively resisted, and higher transmission speed and frequency spectrum frequency can be supported.

Description

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AI Technical Summary

Benefits of technology

This patented method improves upon previous methods used on an Opus Network's UL transmission systems without affecting their performance or usable frequency bands. It introduces new techniques that improve spectral efficacy while reducing signal distortion caused by noise sources like electrical signals transmitted through conductive paths. Additionally, it allows users to select filters based on factors like how much they want to transmit over different types of networks. Overall, these improvements make up what makes them better at carrying out certain tasks related to communication services.

Problems solved by technology

This patent describes two technical methods called Time Domain Multilayer Interleave Distributed Feedback Amplitude Reduction (TMDR). These techniques aim to enhance the spectral efficacy and speed capabilities of wireless networking without sacrificially restricting their owners ability to transmit overlapping channels. They involve dividing the available space into smaller sections called "channels," allowing some carriers to pass through while maintaining sufficient overlap. Additionally, they require a long period of time to process these chunks efficiently, resulting in significant energy consumption during peak usage periods. To address these issues, filters have emerged as potential solutions.

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