Optical communication interface utilizing N-dimensional double square quadrature amplitude modulation
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Solution Overview
Problem
Existing data communication systems are inadequate for handling the high bandwidth demands of modern internet and mobile applications, particularly in spine-leaf network architectures, where large amounts of data need to be shared quickly among servers with low latency and high bandwidth.
Innovation Solution
The implementation of n-dimensional DSQ (Double Square Quadrature Amplitude Modulation) formats in optical communication networks, optimized by reducing symbol density, is used to enhance signal-to-noise ratio and improve data transfer efficiency through spine switches and leaf switches, allowing for high-bandwidth data sharing among servers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If existing data communication systems are used, then system simplicity is maintained, but bandwidth capacity is insufficient for high-demand applications
Solution Approach 1:
The patent transitions from traditional 2D QAM modulation to N-dimensional DSQ modulation, where N > 2. This dimensional expansion allows multiple data bits to be encoded in each symbol across multiple dimensions (I, Q, and additional dimensions), dramatically increasing bandwidth capacity without proportionally increasing system complexity. The nDSQ mapper encodes data by distributing bits across N dimensional axes, achieving higher spectral efficiency.
Solution Approach 2:
The patent changes the modulation parameter from conventional 2D to N-dimensional space by introducing additional quadrature components beyond traditional I and Q. This parameter change enables the system to encode more information per symbol period, directly addressing the bandwidth capacity requirement while maintaining compatible hardware architectures through generalized signal processing.
2Productivity
If high bandwidth data transfer is implemented, then data transfer capability is improved, but power consumption increases
Solution Approach 1:
The patent replaces traditional electrical signal processing with optical communication technology. By using optical carriers and photodetectors instead of electrical circuits for high-speed data transfer, the system achieves terabit-scale bandwidth while reducing power consumption per bit transmitted. The optical domain provides higher frequency operation with lower energy dissipation compared to electrical interconnects.
3Productivity
If optical communication networks are used, then bandwidth is increased, but device form factor increases
Solution Approach 1:
The patent integrates multiple functional components into nested hierarchical structures. Optical transceivers are embedded within switch fabric modules, which are nested within spine-leaf network architectures. This nesting allows high-bandwidth optical communication capabilities to be packaged in compact, modular form factors suitable for data center deployments.
Solution Approach 2:
The patent designs universal optical communication interfaces that can operate across multiple network layers and protocols. The nDSQ modulation scheme and optical transceiver architecture provide multi-functional capabilities, serving both high-speed data transfer and network switching functions, thereby reducing the need for separate dedicated components and minimizing overall device form factor.
Data Source
AI summary
The present invention is directed to data communication system and methods. More specifically, various embodiments of the present invention provide a communication interface that is configured to transfer data at high bandwidth using nDSQ format(s) over optical communication networks. In certain embodiments, the communication interface is used by various devices, such as spine switches and leaf switches, within a spine-leaf network architecture, which allows large amount of data to be shared among servers.