Optical Communication Interface Using N-Dimensional DSQ 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, leading to insufficient bandwidth and latency issues.
Innovation Solution
The implementation of n-dimensional DSQ (Double Square Quadrature Amplitude Modulation) formats over optical communication networks, optimized by reducing symbol density, to enhance signal-to-noise ratio and improve data transfer efficiency in spine-leaf network architectures, specifically using pulse amplitude modulation (PAM) and nDSQ coding techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If traditional communication systems are used, then device complexity is reduced, but bandwidth capacity is insufficient for modern data demands
Solution Approach 1:
The patent transitions from traditional 2D QAM modulation to n-dimensional DSQ modulation, where n>2. This dimensional expansion allows encoding more bits per symbol (e.g., 6 bits per symbol in 3D DSQ vs. 4 bits in 2D QAM), effectively increasing bandwidth capacity without proportionally increasing system complexity. The n-dimensional constellation space provides additional degrees of freedom for data encoding.
Solution Approach 2:
The patent changes the modulation parameter from fixed 2D QAM to variable n-dimensional DSQ, where the dimension n can be adjusted. This parameter change enables adaptive bandwidth capacity - systems can choose n=2 for lower capacity or n>2 for higher capacity, allowing flexibility to match different bandwidth requirements without complete system redesign.
2Productivity
If high symbol density is used in modulation, then data transfer rate increases, but signal-to-noise ratio deteriorates
Solution Approach 1:
The patent applies different spacing strategies to different regions of the n-dimensional constellation space. By optimizing the local density distribution rather than using uniform high density throughout, the system achieves high overall data transfer rate while maintaining adequate SNR margins in critical decision regions. This local optimization allows tighter packing where it benefits capacity without sacrificing reliability where it would harm performance.
3Use of energy by moving object
If conventional network architectures are used, then device form factor remains standard, but power consumption increases for high bandwidth operations
Solution Approach 1:
The patent replaces traditional electrical signaling with optical modulation using nDSQ formats. This substitution enables higher bandwidth capacity to be achieved with lower power consumption because optical systems can transmit more data per unit energy compared to electrical systems. The optical domain provides inherent advantages for high-capacity, low-power communication.
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.