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Capacity of Channels with Direct Detection Receivers

Description

Intensity modulation with direct detection receivers was one of the first widely implemented systems in the field of optical communications before it was replaced by coherent systems. Nowadays, direct detection receivers get again more important due to the low-cost hardware in direct detection receivers. Especially in short reach digital communications this is an important aspect.

In [1], the capacity of direct detection optical systems is lower- and upper bounded.

The students task is to understand the channel model described in [1] and the lower and upper bounds on the channel capacity and summarize them. In addition, the student is asked to search for system designs in literature that try to operate on that kind of channel.

References:

• [1] Mecozzi, Antonio, and Mark Shtaif. "Information capacity of direct detection optical transmission systems." Journal of Lightwave Technology 36.3 (2017): 689-694.

Prerequisites

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Linear Filtering for Short-Reach Fiber-Optic Links with Optical Amplification

Description

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Decision Feedback Equalization for Short-Reach Fiber-Optic Links

Description

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Comparison of Pulse Shapes for Short-Reach Fiber-Optic Channels with Direct Detection

Description

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Achievable Rates for Kramers-Kronig Receivers

Description

We investigate the achievable rates using a KK receiver for short-reach fiber-optic communication systems with direct detection.

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