Cooperative subcarrier sensing using antenna diversity based weighted virtual sub clustering

Mughal, B., Hussain, S. and Ghafoor, A. (2016) Cooperative subcarrier sensing using antenna diversity based weighted virtual sub clustering. China Communications, 13(10), pp. 44-57. (doi:10.1109/CC.2016.7732011)

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Abstract

The idea of cooperation and the clustering amongst cognitive radios (CRs) has recently been focus of attention of research community, owing to its potential to improve performance of spectrum sensing (SS) schemes. This focus has led to the paradigm of cluster based cooperative spectrum sensing (CBCSS). In perspective of high date rate 4th generation wireless systems, which are characterized by orthogonal frequency division multiplexing (OFDM) and spatial diversity, there is a need to devise effective SS strategies. A novel CBCSS scheme is proposed for OFDM subcarrier detection in order to enable the non-contiguous OFDM (NC-OFDM) at the physical layer of CRs for efficient utilization of spectrum holes. Proposed scheme is based on the energy detection in MIMO CR network, using equal gain combiner as diversity combining technique, hard combining (AND, OR and Majority) rule as data fusion technique and antenna diversity based weighted clustering as virtual sub clustering algorithm. Results of proposed CBCSS are compared with conventional CBCSS scheme for AND, OR and Majority data fusion rules. Moreover the effects of antenna diversity, cooperation and cooperating clusters are also discussed.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Hussain, Dr Sajjad
Authors: Mughal, B., Hussain, S., and Ghafoor, A.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:China Communications
Publisher:China Institute of Communications
ISSN:1673-5447
Copyright Holders:Copyright © 2016 IEEE
First Published:First published in China Communications 13(10): 44-57
Publisher Policy:Reproduced in accordance with the publisher copyright policy

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