Proceedings ArticleDOI
System Design for Cognitive Radio Conmunications
Mustafa E. Sahin,Huseyin Arslan +1 more
- pp 1-5
TLDR
A comprehensive system design for cognitive radio is presented and it is proposed to transmit the spectrum sensing related information via on-off keying (OOK) modulated ultrawideband (UWB) and a processing gain based approach that leads to an increased range for cognitive networks.Abstract:
The rising number and capacity requirements of radio systems bring about an increasing demand for frequency spectrum. Cognitive radio offers a tempting solution to this problem by proposing opportunistic usage of frequency bands that are not occupied by their licensed users. Since it is a rather new concept, there is no consensus on the practical implementation of cognitive radio communications. In this paper, a comprehensive system design for cognitive radio is presented. The details of spectrum sensing and dynamic spectrum shaping, which constitute the basics of opportunistic spectrum usage, are given. It is proposed to transmit the spectrum sensing related information via on-off keying (OOK) modulated ultrawideband (UWB). The limits on the range of one-to-one cognitive communications are discussed. A processing gain based approach that leads to an increased range for cognitive networks is proposed. Different signaling options for the real data communications are given, and among these options an impulse radio that employs raised cosine filters is investigated in detail.read more
Citations
More filters
Journal ArticleDOI
A survey of common control channel design in cognitive radio networks
TL;DR: The problem of common control channel design is presented by its classification, design challenges, design schemes, and its applications in network protocol layers and the relation of the common control channels with radio interface, cooperative sensing, medium access control, and routing are discussed.
Journal ArticleDOI
Design and Implementation of an Underlay Control Channel for Cognitive Radios
TL;DR: The design and implementation of a filter bank multicarrier spread spectrum (FBMC-SS) system for use as the control channel in cognitive radio networks is reported.
Cognitive radio: An intelligent wireless communication system
Marja Matinmikko,Marko Hoyhtya,Miia Mustonen,Heli Sarvanko,Atso Hekkala,Marcos Katz,Aarne Mammela,Markku Kiviranta,Aino Kautio +8 more
TL;DR: Some measurements on current spectrum occupancy are described indicating that even with low overall spectrum occupancy figures, the spectrum band usage can still frequent and the temporal characteristics need to be identified to find spectrum opportunities.
Journal ArticleDOI
A Framework for Cognitive WiMAX With Frequency Agility
TL;DR: This work develops a framework for applying cognitive radio technology to mobile WiMax networks to increase capacity and simplify network operations and evaluates the performance of ldquocognitive channel assignmentrdquo relative to conventional dynamic channel assignment.
References
More filters
Journal ArticleDOI
Cognitive radio: brain-empowered wireless communications
TL;DR: Following the discussion of interference temperature as a new metric for the quantification and management of interference, the paper addresses three fundamental cognitive tasks: radio-scene analysis, channel-state estimation and predictive modeling, and the emergent behavior of cognitive radio.
Proceedings ArticleDOI
Implementation issues in spectrum sensing for cognitive radios
TL;DR: To improve radio sensitivity of the sensing function through processing gain, three digital signal processing techniques are investigated: matched filtering, energy detection and cyclostationary feature detection.
Proceedings ArticleDOI
Cognitive radio for flexible mobile multimedia communications
TL;DR: This paper characterizes the potential contributions of cognitive radio to spectrum pooling and outlines an initial framework for formal radio-etiquette protocols.
Journal ArticleDOI
Cognitive radio for flexible mobile multimedia communications
Joseph Mitola,Joseph Mitola +1 more
TL;DR: This paper characterizes the potential contributions of cognitive radio to spectrum pooling and outlines an initial framework for formal radio-etiquette protocols.
Journal ArticleDOI
Spectrum pooling: an innovative strategy for the enhancement of spectrum efficiency
T. Weiss,Friedrich K. Jondral +1 more
TL;DR: The technical challenges that have to be met when implementing the interesting new technology of spectrum pooling are described, which represents the coexistence of two mobile radio systems within the same frequency range.