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Implementation and ...
Abstract
Ämnesord
Stäng
- The digital signal processing (DSP) circuits used in the fiber-optic communication links that make up the backbone of the Internet can be a significant contributor the over-all power dissipation of a link. As the number of connected users and their bandwidth requirements are expected to continue to grow over the coming years, the development of power-efficient high-throughput DSP systems is a critical factor in enabling this growth. Unfortunately, DSP designers can no longer depend on foundries delivering faster and more power-efficient circuits for each new process node, due to both economical and physical limitations. As a result, more stringent speed and power requirements are put on the circuit designs. Carrier phase recovery (CPR) is one subsystem of a typical DSP system for fiber-optic communication. In this thesis, we explore and evaluate circuit designs of multiple types of CPR, with a focus on single-mode systems. The circuit designs allow us to uncover trade-offs between power dissipation, area, throughput and signal degradation, for different types of systems employing a range of modulation formats. Coupled-core multi-mode fiber systems have been suggested as a way to increase throughput by utilizing also the spatial dimension, and this thesis describes a multiple-input multiple-output adaptive equalizer targeting these systems. The equalizer circuit enables exploration of how this critical subsystem scales to higher core counts. Additionally, we describe a circuit verification and evaluation environment that has the potential to speed up simulations by orders of magnitude by emulating a fiber-optic link onboard an application-specific integrated circuit or a field-programmable gate array.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Kommunikationssystem (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Communication Systems (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Inbäddad systemteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Embedded Systems (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Signalbehandling (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Signal Processing (hsv//eng)
Nyckelord
- Adaptive Equalization
- Carrier Phase Recovery
- Digital Signal Processing
- Application-Specific Integrated Circuits
- Communication Systems
- Fiber-Optic Communication
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