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Multicarrier Faster-than-Nyquist Signaling Transceivers: From Theory to Practice

Dasalukunte, Deepak LU (2011)
Abstract (Swedish)
Popular Abstract in English

In the past decade, mobile wireless communication have had a tremendous impact on the way people perceive and use mobile devices, most popularly the mobile phone. Apart from making phone calls, they are capable of being cameras to take pictures and videos, able to browse the Internet, do video calling and much more just like an yesteryear computer. The wireless medium is the air through which information is transmitted using electromagnetic waves and is similar to a radio being tuned to particular frequency to listen to a station broadcasting a program. However, mobile wireless communication is much more complicated due to the two-way nature as well as the

variety of information that is... (More)
Popular Abstract in English

In the past decade, mobile wireless communication have had a tremendous impact on the way people perceive and use mobile devices, most popularly the mobile phone. Apart from making phone calls, they are capable of being cameras to take pictures and videos, able to browse the Internet, do video calling and much more just like an yesteryear computer. The wireless medium is the air through which information is transmitted using electromagnetic waves and is similar to a radio being tuned to particular frequency to listen to a station broadcasting a program. However, mobile wireless communication is much more complicated due to the two-way nature as well as the

variety of information that is being transmitted. Further, the number of frequencies, referred to as bandwidth, required is a lot more for a mobile device. There has been a tremendous improvement and demand for bandwidth resources in the recent past and is continuing to grow. Hence efficient use of bandwidth resources has become a key parameter in the design and realization of wireless communication systems.



Faster-than-Nyquist (FTN) signaling is one such technique that achieves bandwidth efficiency by making better use of the available bandwidth resources. Along with the inclusion of a lot of features

into the mobile devices they still need to be compact and be capable of operating on batteries. This implies that the underlying hardware realizing the wireless functionality need to be small and consume less power. This thesis addresses the challenges and design trade offs arising during the hardware realization of transmitter and receiver for faster-than-Nyquist signaling. The FTN system

has been evaluated for its achievable performance compared to the processing overhead in both the transmitter and receiver. Coexistence with existing and upcoming wireless systems has been considered so that they can be seamlessly integrated. An efficient hardware architecture that reuses the underlying blocks for different purposes has been designed, implemented and verified on an ASIC that uses a state-of-the-art chip fabrication technology. (Less)
Abstract
The demand for spectrum resources in cellular systems worldwide has seen a tremendous escalation in the recent past. The mobile phones of today are capable of being cameras taking pictures and videos, able to browse the Internet, do video calling and much more than an yesteryear computer. Due to the variety and the amount of information that is being transmitted the demand for spectrum resources is continuously increasing. Efficient use of bandwidth resources has hence become a key parameter in the design and realization of

wireless communication systems. Faster-than-Nyquist (FTN) signaling is one such technique that achieves bandwidth efficiency by making better use of the available spectrum resources at the expense of higher... (More)
The demand for spectrum resources in cellular systems worldwide has seen a tremendous escalation in the recent past. The mobile phones of today are capable of being cameras taking pictures and videos, able to browse the Internet, do video calling and much more than an yesteryear computer. Due to the variety and the amount of information that is being transmitted the demand for spectrum resources is continuously increasing. Efficient use of bandwidth resources has hence become a key parameter in the design and realization of

wireless communication systems. Faster-than-Nyquist (FTN) signaling is one such technique that achieves bandwidth efficiency by making better use of the available spectrum resources at the expense of higher processing complexity in the transceiver.



This thesis addresses the challenges and design trade offs arising during the hardware realization of Faster-than-Nyquist signaling transceivers. The FTN system has been evaluated for its achievable performance compared to the processing overhead in the transmitter and the receiver. Coexistence with OFDM systems, a more popular multicarrier scheme in existing and upcoming wireless standards, has been considered by designing FTN specific processing blocks as add-ons to the conventional transceiver chain. A multicarrier system capable of operating under both orthogonal and FTN signaling has been developed. The performance of the receiver was evaluated for AWGN and fading channels. The FTN system was able to achieve 2x improvement in bandwidth usage with similar performance as that of an OFDM system. The extra processing in the receiver was in terms of an iterative decoder for the decoding of FTN modulated signals. An efficient hardware architecture for the iterative decoder reusing the FTN specific processing blocks and realize different functionality has been designed. An ASIC implementation of this decoder was implemented

in a 65nm CMOS technology and the implemented chip has been successfully verified for its functionality. (Less)
Please use this url to cite or link to this publication:
author
supervisor
opponent
  • Prof. Fettweis, Gerhard, Technische Universität Dresden, Germany
organization
publishing date
type
Thesis
publication status
published
subject
keywords
iterative decoding, bandwidth efficient, Faster-than-Nyquist, hardware architecture, multicarrier
pages
142 pages
defense location
E:1406, E-building, Ole Römers väg 3, Lund University, Faculty of Engineering
defense date
2012-01-19 10:15
ISSN
1654-790X
ISBN
978-91-7473-223-8
project
EIT_HSWC:Coding Coding, modulation, security and their implementation
language
English
LU publication?
yes
id
5ac68601-4bb1-497a-9ec7-13e66e887ecf (old id 2225257)
date added to LUP
2011-12-15 12:31:25
date last changed
2016-09-19 08:45:01
@misc{5ac68601-4bb1-497a-9ec7-13e66e887ecf,
  abstract     = {The demand for spectrum resources in cellular systems worldwide has seen a tremendous escalation in the recent past. The mobile phones of today are capable of being cameras taking pictures and videos, able to browse the Internet, do video calling and much more than an yesteryear computer. Due to the variety and the amount of information that is being transmitted the demand for spectrum resources is continuously increasing. Efficient use of bandwidth resources has hence become a key parameter in the design and realization of<br/><br>
wireless communication systems. Faster-than-Nyquist (FTN) signaling is one such technique that achieves bandwidth efficiency by making better use of the available spectrum resources at the expense of higher processing complexity in the transceiver.<br/><br>
<br/><br>
This thesis addresses the challenges and design trade offs arising during the hardware realization of Faster-than-Nyquist signaling transceivers. The FTN system has been evaluated for its achievable performance compared to the processing overhead in the transmitter and the receiver. Coexistence with OFDM systems, a more popular multicarrier scheme in existing and upcoming wireless standards, has been considered by designing FTN specific processing blocks as add-ons to the conventional transceiver chain. A multicarrier system capable of operating under both orthogonal and FTN signaling has been developed. The performance of the receiver was evaluated for AWGN and fading channels. The FTN system was able to achieve 2x improvement in bandwidth usage with similar performance as that of an OFDM system. The extra processing in the receiver was in terms of an iterative decoder for the decoding of FTN modulated signals. An efficient hardware architecture for the iterative decoder reusing the FTN specific processing blocks and realize different functionality has been designed. An ASIC implementation of this decoder was implemented<br/><br>
in a 65nm CMOS technology and the implemented chip has been successfully verified for its functionality.},
  author       = {Dasalukunte, Deepak},
  isbn         = {978-91-7473-223-8},
  issn         = {1654-790X},
  keyword      = {iterative decoding,bandwidth efficient,Faster-than-Nyquist,hardware architecture,multicarrier},
  language     = {eng},
  pages        = {142},
  title        = {Multicarrier Faster-than-Nyquist Signaling Transceivers: From Theory to Practice},
  year         = {2011},
}