Capacity analysis of spectrum sharing spatial multiplexing MIMO systems

Handle URI:
http://hdl.handle.net/10754/563905
Title:
Capacity analysis of spectrum sharing spatial multiplexing MIMO systems
Authors:
Yang, Liang; Qaraqe, Khalid A.; Serpedin, Erchin; Alouini, Mohamed-Slim ( 0000-0003-4827-1793 )
Abstract:
This paper considers a spectrum sharing (SS) multiple-input multiple-output (MIMO) system operating in a Rayleigh fading environment. First the capacity of a single-user SS spatial multiplexing system is investigated in two scenarios that assume different receivers. To explicitly show the capacity scaling law of SS MIMO systems, some approximate capacity expressions for the two scenarios are derived. Next, we extend our analysis to a multiple user system with zero-forcing receivers (ZF) under spatially-independent scheduling and analyze the sum-rate. Furthermore, we provide an asymptotic sum-rate analysis to investigate the effects of different parameters on the multiuser diversity gain. Our results show that the secondary system with a smaller number of transmit antennas Nt and a larger number of receive antennas Nr can achieve higher capacity at lower interference temperature Q, but at high Q the capacity follows the scaling law of the conventional MIMO systems. However, for a ZF SS spatial multiplexing system, the secondary system with small Nt and large Nr can achieve the highest capacity throughout the entire region of Q. For a ZF SS spatial multiplexing system with scheduling, the asymptotic sum-rate scales like Ntlog2(Q(KNtNp-1)/Nt), where Np denotes the number of antennas of the primary receiver and K represents the number of secondary transmitters.
KAUST Department:
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division; Electrical Engineering Program; Communication Theory Lab
Publisher:
Elsevier BV
Journal:
Physical Communication
Issue Date:
Dec-2014
DOI:
10.1016/j.phycom.2014.09.003
Type:
Article
ISSN:
18744907
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.authorYang, Liangen
dc.contributor.authorQaraqe, Khalid A.en
dc.contributor.authorSerpedin, Erchinen
dc.contributor.authorAlouini, Mohamed-Slimen
dc.date.accessioned2015-08-03T12:19:03Zen
dc.date.available2015-08-03T12:19:03Zen
dc.date.issued2014-12en
dc.identifier.issn18744907en
dc.identifier.doi10.1016/j.phycom.2014.09.003en
dc.identifier.urihttp://hdl.handle.net/10754/563905en
dc.description.abstractThis paper considers a spectrum sharing (SS) multiple-input multiple-output (MIMO) system operating in a Rayleigh fading environment. First the capacity of a single-user SS spatial multiplexing system is investigated in two scenarios that assume different receivers. To explicitly show the capacity scaling law of SS MIMO systems, some approximate capacity expressions for the two scenarios are derived. Next, we extend our analysis to a multiple user system with zero-forcing receivers (ZF) under spatially-independent scheduling and analyze the sum-rate. Furthermore, we provide an asymptotic sum-rate analysis to investigate the effects of different parameters on the multiuser diversity gain. Our results show that the secondary system with a smaller number of transmit antennas Nt and a larger number of receive antennas Nr can achieve higher capacity at lower interference temperature Q, but at high Q the capacity follows the scaling law of the conventional MIMO systems. However, for a ZF SS spatial multiplexing system, the secondary system with small Nt and large Nr can achieve the highest capacity throughout the entire region of Q. For a ZF SS spatial multiplexing system with scheduling, the asymptotic sum-rate scales like Ntlog2(Q(KNtNp-1)/Nt), where Np denotes the number of antennas of the primary receiver and K represents the number of secondary transmitters.en
dc.publisherElsevier BVen
dc.subjectMIMOen
dc.subjectMultiuser diversityen
dc.subjectSpectrum sharingen
dc.subjectZero-forcingen
dc.titleCapacity analysis of spectrum sharing spatial multiplexing MIMO systemsen
dc.typeArticleen
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Divisionen
dc.contributor.departmentElectrical Engineering Programen
dc.contributor.departmentCommunication Theory Laben
dc.identifier.journalPhysical Communicationen
dc.contributor.institutionSchool of Information Engineering, Guangdong University of TechnologyGuangzhou, Chinaen
dc.contributor.institutionNational Mobile Communications Research Laboratory, Southeast University, Chinaen
dc.contributor.institutionDepartment of ECE, Texas A and M University at QatarDoha, Qataren
dc.contributor.institutionDepartment of ECE, Texas A and M UniversityCollege Station, TX, United Statesen
kaust.authorAlouini, Mohamed-Slimen
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