Publication detail

Analytical performance of soft data fusion-aided spectrum sensing in hybrid terrestrial-satellite networks

CHANDRA, A. KUNDU, S. et al.

Original Title

Analytical performance of soft data fusion-aided spectrum sensing in hybrid terrestrial-satellite networks

Type

journal article in Web of Science

Language

English

Original Abstract

The cognitive radio (CR) technology is developed to help secondary users to utilize spectrum holes of the primary users (PUs) opportunistically. Accurate detection of spectrum holes via cooperative spectrum sensing (CSS) is essential for realization of CR protocols in next generation hybrid terrestrial-satellite networks. Soft data fusion refers to a class of efficient CSS schemes for CR networks to find presence or absence of a PU. Each CR user senses the PU and transmits its sensing information in terms of energy obtained using energy detector to fusion center (FC). Next, any of the soft data schemes, which differ in technique of combining the energy information, may be performed at FC to acquire a final decision about a PU. In the present paper, numerical analysis of various soft data-aided CSS schemes in different fading/shadowing environments is studied. In particular, closed-form expressions of detection probability for the known soft data schemes are derived for each of the popular fading models. A comparative performance of soft combining schemes is illustrated for various network and channel conditions. Further, an optimal detection threshold that minimizes the total error is also indicated for different soft schemes.

Keywords

Cooperative spectrum sensing, soft data fusion, fading channel, detection probability

Authors

CHANDRA, A.; KUNDU, S. et al.

Released

1. 12. 2016

ISBN

1542-0973

Periodical

INTERNATIONAL JOURNAL OF SATELLITE COMMUNICATIONS AND NETWORKING

Year of study

99

Number

PP

State

United Kingdom of Great Britain and Northern Ireland

Pages from

1

Pages to

19

Pages count

19

BibTex

@article{BUT129599,
  author="CHANDRA, A. and KUNDU, S. et al.",
  title="Analytical performance of soft data fusion-aided spectrum sensing in hybrid terrestrial-satellite networks",
  journal="INTERNATIONAL JOURNAL OF SATELLITE COMMUNICATIONS AND NETWORKING",
  year="2016",
  volume="99",
  number="PP",
  pages="1--19",
  doi="10.1002/sat.1200",
  issn="1542-0973"
}