NDLI: On the coexistence of primary and secondary users in spectrum-sharing broadcast channels

Content Provider	IEEE Xplore Digital Library
Author	Yuli Yang Aissa, S.
Copyright Year	2013
Description	Author affiliation: CEMSE Div., King Abdullah Univ. of Sci. & Technol., Thuwal, Saudi Arabia (Yuli Yang) \|\| INRSEMT, Univ. of Q, Montreal, QC, Canada (Aissa, S.)
Abstract	In this paper, we consider a broadcast channel in spectrum-sharing networks, where the base station schedules licensed primary users (PUs) and cognitive secondary users (SUs) simultaneously. Based on such a framework, we present a transmission strategy in the light of dirty paper coding. In order to promise the PUs' quality of service (QoS) in the broadcasting, the base station chooses codewords for the users by taking into account that the codewords pertaining to SUs can be pre-subtracted from those pertaining to PUs as if there were no interference from the secondary's data to the primary's data. For the purpose of performance evaluation, by taking capacity behavior and bit error rate (BER) as metrics, we study the achievable data rate regions for both types of users with the introduced design, and analyze the BER performance in corresponding systems implemented with hierarchical modulation. Numerical results substantiate that with flexible management of the spectrum resources, our proposed scheme provides more communication opportunities for SUs while maintaining PUs' QoS at an acceptable level.
Starting Page	3085
Ending Page	3089
File Size	204514
Page Count	5
File Format	PDF
ISBN	9781467331227
ISSN	15503607
DOI	10.1109/ICC.2013.6655015
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-06-09
Publisher Place	Hungary
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Interference Bit error rate Modulation Resource management Signal to noise ratio Quality of service Decoding
Content Type	Text
Resource Type	Article

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