Effect of threshold quantization in opportunistic splitting algorithm

Handle URI:
http://hdl.handle.net/10754/561949
Title:
Effect of threshold quantization in opportunistic splitting algorithm
Authors:
Nam, Haewoon; Alouini, Mohamed-Slim ( 0000-0003-4827-1793 )
Abstract:
This paper discusses algorithms to find the optimal threshold and also investigates the impact of threshold quantization on the scheduling outage performance of the opportunistic splitting scheduling algorithm. Since this algorithm aims at finding the user with the highest channel quality within the minimal number of mini-slots by adjusting the threshold every mini-slot, optimizing the threshold is of paramount importance. Hence, in this paper we first discuss how to compute the optimal threshold along with two tight approximations for the optimal threshold. Closed-form expressions are provided for those approximations for simple calculations. Then, we consider linear quantization of the threshold to take the limited number of bits for signaling messages in practical systems into consideration. Due to the limited granularity for the quantized threshold value, an irreducible scheduling outage floor is observed. The numerical results show that the two approximations offer lower scheduling outage probability floors compared to the conventional algorithm when the threshold is quantized. © 2006 IEEE.
KAUST Department:
Electrical Engineering Program; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division; Communication Theory Lab
Publisher:
Institute of Electrical and Electronics Engineers (IEEE)
Journal:
IEEE Communications Letters
Issue Date:
Dec-2011
DOI:
10.1109/LCOMM.2011.101711.110317
Type:
Article
ISSN:
10897798
Sponsors:
This work was supported by the research fund of Hanyang University (HY-2011-N), and also in part by the Qatar National Research Fund.
Appears in Collections:
Articles; Electrical Engineering Program; Communication Theory Lab; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorNam, Haewoonen
dc.contributor.authorAlouini, Mohamed-Slimen
dc.date.accessioned2015-08-03T09:34:48Zen
dc.date.available2015-08-03T09:34:48Zen
dc.date.issued2011-12en
dc.identifier.issn10897798en
dc.identifier.doi10.1109/LCOMM.2011.101711.110317en
dc.identifier.urihttp://hdl.handle.net/10754/561949en
dc.description.abstractThis paper discusses algorithms to find the optimal threshold and also investigates the impact of threshold quantization on the scheduling outage performance of the opportunistic splitting scheduling algorithm. Since this algorithm aims at finding the user with the highest channel quality within the minimal number of mini-slots by adjusting the threshold every mini-slot, optimizing the threshold is of paramount importance. Hence, in this paper we first discuss how to compute the optimal threshold along with two tight approximations for the optimal threshold. Closed-form expressions are provided for those approximations for simple calculations. Then, we consider linear quantization of the threshold to take the limited number of bits for signaling messages in practical systems into consideration. Due to the limited granularity for the quantized threshold value, an irreducible scheduling outage floor is observed. The numerical results show that the two approximations offer lower scheduling outage probability floors compared to the conventional algorithm when the threshold is quantized. © 2006 IEEE.en
dc.description.sponsorshipThis work was supported by the research fund of Hanyang University (HY-2011-N), and also in part by the Qatar National Research Fund.en
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)en
dc.subjectand opportunistic splitting algorithmen
dc.subjectmultiuser accessen
dc.subjectOpportunistic schedulingen
dc.titleEffect of threshold quantization in opportunistic splitting algorithmen
dc.typeArticleen
dc.contributor.departmentElectrical Engineering Programen
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Divisionen
dc.contributor.departmentCommunication Theory Laben
dc.identifier.journalIEEE Communications Lettersen
dc.contributor.institutionDepartment of Electronics and Communication Engineering, Hanyang University, Ansan, South Koreaen
kaust.authorAlouini, Mohamed-Slimen
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