Jörg Lotze | Trinity College Dublin (original) (raw)

Papers by Jörg Lotze

Research paper thumbnail of High-level Cognitive Radio Design using Xilinx FPGAs

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Spectrum sensing to achieve frequency rendezvous using Xilinx FPGAs

IEEE Symposia on New Frontiers in Dynamic Spectrum Access Networks (DySPAN), Chicago, IL, USA, Oct 1, 2008

Nodes in dynamic spectrum access networks opportunistically use free areas of spectrum, also call... more Nodes in dynamic spectrum access networks opportunistically use free areas of spectrum, also called white spaces, for communication. A common problem in such networks is achieving rendezvous between a transmitter and a receiver, ie, establishing a communication link on the same frequency band. One possible solution is to use a common control channel where each transmitter can propagate information about which channel it is using. However, the frequency of this dedicated control channel has to be known a priori ...

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Development framework for implementing FPGA-based cognitive network nodes

GLOBECOM - IEEE Global Telecommunications Conference, 2009

Bookmarks Related papers MentionsView impact

Research paper thumbnail of A Model-Based Approach to Cognitive Radio Design

IEEE Journal on Selected Areas in Communications, 2000

Bookmarks Related papers MentionsView impact

Research paper thumbnail of An FPGA-based autonomous adaptive radio

ACM SIGCOMM Conference

We show the use of a novel, high-level FPGA-based cognitive radio framework in implementing a dem... more We show the use of a novel, high-level FPGA-based cognitive radio framework in implementing a demonstration of video transmission over a frequency-agile radio link. The demo uses spectrum sensing to detect the transmission frequency and adapts the forward error correction scheme to the channel conditions autonomously.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Multi-platform demonstrations using the iris architecture for cognitive radio network testbeds

2010 Proceedings of the 5th International Conference on Cognitive Radio Oriented Wireless Networks and Communications, CROWNCom 2010, 2010

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Spectrum sensing on LTE femtocells for GSM spectrum re-farming using Xilinx FPGAs

Software-Defined Radio Forum Technical Conference (SDR Forum), Dec 1, 2009

Femtocells are a promising solution to provide high coverage and high data rates inside consumer&... more Femtocells are a promising solution to provide high coverage and high data rates inside consumer's homes while cutting operator costs significantly. Next generation Long Term Evolution (LTE) femtocells are likely to be deployed in GSM spectrum, increasing frequency utilisation and allowing a smooth transition to LTE. This paper proposes to use a spectrum sensing technique specialised for LTE signals to avoid interference between neighbour femtocells without operator intervention. Simulation results of the detection ...

Bookmarks Related papers MentionsView impact

Research paper thumbnail of An FPGA-based cognitive radio framework

IET Conference Publications, 2008

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Generic software framework for adaptive applications on FPGAs

Proceedings - IEEE Symposium on Field Programmable Custom Computing Machines, FCCM 2009, 2009

Bookmarks Related papers MentionsView impact

Research paper thumbnail of High-level Cognitive Radio Design using Xilinx FPGAs

ntu.edu.sg

Objectives A primary goal for the proposed framework is to allow communications engineers (ie, no... more Objectives A primary goal for the proposed framework is to allow communications engineers (ie, non-hardware experts) to quickly design and implement cognitive radios on FPGAs, thus gaining from the significant performance and power advantages they provide. F PGAs a re traditionally considered to be hardware devices, which are difficult to use since they require experience in low-level hardware design. The radio designer on the other hand prefers to focus on the radio design and not think about implementation details on the FPGAs. We ...

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Spectrum Sensing to Achieve Frequency Rendezvous using Xilinx FPGAs

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Development Framework for Implementing FPGA-Based Cognitive Network Nodes

Globecom 2009 2009 Ieee Global Telecommunications Conference, 2009

Bookmarks Related papers MentionsView impact

Research paper thumbnail of High-level Cognitive Radio Design using Xilinx FPGAs

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Spectrum sensing to achieve frequency rendezvous using Xilinx FPGAs

IEEE Symposia on New Frontiers in Dynamic Spectrum Access Networks (DySPAN), Chicago, IL, USA, Oct 1, 2008

Nodes in dynamic spectrum access networks opportunistically use free areas of spectrum, also call... more Nodes in dynamic spectrum access networks opportunistically use free areas of spectrum, also called white spaces, for communication. A common problem in such networks is achieving rendezvous between a transmitter and a receiver, ie, establishing a communication link on the same frequency band. One possible solution is to use a common control channel where each transmitter can propagate information about which channel it is using. However, the frequency of this dedicated control channel has to be known a priori ...

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Development framework for implementing FPGA-based cognitive network nodes

GLOBECOM - IEEE Global Telecommunications Conference, 2009

Bookmarks Related papers MentionsView impact

Research paper thumbnail of A Model-Based Approach to Cognitive Radio Design

IEEE Journal on Selected Areas in Communications, 2000

Bookmarks Related papers MentionsView impact

Research paper thumbnail of An FPGA-based autonomous adaptive radio

ACM SIGCOMM Conference

We show the use of a novel, high-level FPGA-based cognitive radio framework in implementing a dem... more We show the use of a novel, high-level FPGA-based cognitive radio framework in implementing a demonstration of video transmission over a frequency-agile radio link. The demo uses spectrum sensing to detect the transmission frequency and adapts the forward error correction scheme to the channel conditions autonomously.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Multi-platform demonstrations using the iris architecture for cognitive radio network testbeds

2010 Proceedings of the 5th International Conference on Cognitive Radio Oriented Wireless Networks and Communications, CROWNCom 2010, 2010

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Spectrum sensing on LTE femtocells for GSM spectrum re-farming using Xilinx FPGAs

Software-Defined Radio Forum Technical Conference (SDR Forum), Dec 1, 2009

Femtocells are a promising solution to provide high coverage and high data rates inside consumer&... more Femtocells are a promising solution to provide high coverage and high data rates inside consumer's homes while cutting operator costs significantly. Next generation Long Term Evolution (LTE) femtocells are likely to be deployed in GSM spectrum, increasing frequency utilisation and allowing a smooth transition to LTE. This paper proposes to use a spectrum sensing technique specialised for LTE signals to avoid interference between neighbour femtocells without operator intervention. Simulation results of the detection ...

Bookmarks Related papers MentionsView impact

Research paper thumbnail of An FPGA-based cognitive radio framework

IET Conference Publications, 2008

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Generic software framework for adaptive applications on FPGAs

Proceedings - IEEE Symposium on Field Programmable Custom Computing Machines, FCCM 2009, 2009

Bookmarks Related papers MentionsView impact

Research paper thumbnail of High-level Cognitive Radio Design using Xilinx FPGAs

ntu.edu.sg

Objectives A primary goal for the proposed framework is to allow communications engineers (ie, no... more Objectives A primary goal for the proposed framework is to allow communications engineers (ie, non-hardware experts) to quickly design and implement cognitive radios on FPGAs, thus gaining from the significant performance and power advantages they provide. F PGAs a re traditionally considered to be hardware devices, which are difficult to use since they require experience in low-level hardware design. The radio designer on the other hand prefers to focus on the radio design and not think about implementation details on the FPGAs. We ...

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Spectrum Sensing to Achieve Frequency Rendezvous using Xilinx FPGAs

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Development Framework for Implementing FPGA-Based Cognitive Network Nodes

Globecom 2009 2009 Ieee Global Telecommunications Conference, 2009

Bookmarks Related papers MentionsView impact