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Adaptive Far-End Crosstalk Cancellation for MIMO Channels

Abstract

Both channel loss and crosstalk present system-level bottlenecks to high-speed wireline transceivers. While there has been extensive research in channel loss equalization, only in recent years has crosstalk cancellation become required in various electrical systems. This dissertation focuses on the physical nature of far-end crosstalk as well as its negative impact on high-speed receivers. A blind adaptive architecture with minimal hardware and complexity overhead is also presented.

These concepts are utilized to design and fabricate a receiver in TowerJazz’s SBC18H3 BiCMOS process and has an operational speed up to 2 x 49.38Gbps while drawing 187mA from a 1.8V supply. Measurements show that the adaptation is functional and close to the optimal point, and that the eye-width can be improved by up to 270mUI with a PRBS aggressor present.

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