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LTE and WLAN Interference Suppression in CR Applications

Authors:
Johanna Vartiainen
Risto Vuohtoniemi

Keywords: interference suppression; grey zone; cognitive radio; LTE; WLAN; measurements

Abstract:
In traditional cognitive radio approach, spectrum is divided into black and white spaces. Black space is reserved to primary users (PU) as secondary users (SU) are able to transmit in white space. A modern approach is that the black space is divided into black and grey spaces to get more capacity. Grey space leads to novel type of interference environment because of interfering signals coming from PUs and other SUs. In addition, novel CR applications like long term evolution advanced (LTE-A) and internet of things (IoT) generate interfering signals. Thus, interference suppression is needed. In this paper, the performance of the forward consecutive mean excision algorithm (FCME) interference suppression method is studied in the presence of relatively narrowband interfering signals existing in the novel CR networks. Real-world LTE and WLAN signal measurements were used to verify the usability of the FCME IS method in future CR applications.

Pages: 33 to 38

Copyright: Copyright (c) IARIA, 2016

Publication date: February 21, 2016

Published in: conference

ISSN: 2308-4251

ISBN: 978-1-61208-456-5

Location: Lisbon, Portugal

Dates: from February 21, 2016 to February 25, 2016