Low complexity user pairing and resource allocation of heterogeneous users for uplink virtual MIMO system over LTE-A network

Jayeta Biswas, Wei Ni, Ren Ping Liu, Iain B. Collings, Sanjay K. Jha

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

1 Citation (Scopus)

Abstract

Virtual Multiple-Input Multiple-Output (MIMO) is a promising uplink technology that can meet the throughput demand of Long-Term Evolution-Advanced (LTE-A) systems. However, the complexity of scheduling virtual MIMO is a challenge; existing virtual MIMO is therefore limited to best effort applications. We investigate the resource allocation and scheduling problem in a heterogeneous virtual MIMO system where delay sensitive applications are present. The goal is to maximize the system throughput while maintaining delay bound for delay sensitive traffic. To tackle the complexity challenge, we propose two low-complexity suboptimal algorithms, where the key idea is to reduce the search space and iteratively minimize the rate loss respectively. Simulation results show that the rate loss minimization based heuristic algorithm converges to within 99% of the optimal throughput on average and maintains delay bound for delay sensitive users. It also achieves almost the same fairness performance as the optimal solution.

Original languageEnglish
Title of host publication2014 IEEE Wireless Communications and Networking Conference (WCNC)
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages1903-1908
Number of pages6
ISBN (Electronic)9781479930838
ISBN (Print)9781479930845
DOIs
Publication statusPublished - 10 Nov 2014
Externally publishedYes
Event2014 IEEE Wireless Communications and Networking Conference, WCNC 2014 - Istanbul, Turkey
Duration: 6 Apr 20149 Apr 2014

Other

Other2014 IEEE Wireless Communications and Networking Conference, WCNC 2014
CountryTurkey
CityIstanbul
Period6/04/149/04/14

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Keywords

  • delay
  • LTE-A
  • quality-of-service (QoS)
  • scheduling
  • Virtual Multi-user multiple-input multiple-output (MU-MIMO)

Cite this

Biswas, J., Ni, W., Liu, R. P., Collings, I. B., & Jha, S. K. (2014). Low complexity user pairing and resource allocation of heterogeneous users for uplink virtual MIMO system over LTE-A network. In 2014 IEEE Wireless Communications and Networking Conference (WCNC) (pp. 1903-1908). [6952560] Piscataway, NJ: Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/WCNC.2014.6952560