Low latency driven effective capacity analysis for non-orthogonal and orthogonal spectrum access

Wenjuan Yu; Leila Musavian; Atta ul Quddus; Qiang Ni; Pei Xiao

doi:10.1109/GLOCOMW.2018.8644490

Low latency driven effective capacity analysis for non-orthogonal and orthogonal spectrum access

Wenjuan Yu, Leila Musavian, Atta ul Quddus, Qiang Ni Pei Xiao

Proceedings of 2018 IEEE Global Communications Conference (GLOBECOM)

2018 IEEE Global Communications Conference (GLOBECOM) (Abu Dhabi, UAE, 09/12/2018 - 13/12/2018)

2018

: https://doi.org/10.1109/GLOCOMW.2018.8644490

URLLC; NOMA; Effective capacity; Delay violation probability; Exact closed-form expressions

In this paper, we theoretically investigate the performance of non-orthogonal and orthogonal spectrum access protocols (more generically known as NOMA) in supporting ultra-reliable low-latency communications (URLLC). The theory of effective capacity (EC) is adopted as a suitable delayguaranteed capacity metric to flexibly represent the users’ delay requirements. Then, the total EC difference between a downlink user-paired NOMA network and a downlink orthogonal multiple access (OMA) network is analytically studied. Exact closed-form expressions and the approximated closed-forms at high signal-tonoise ratios (SNRs) are derived for both networks and validated through simulation results. It is shown that for a user pair in which two users with the most distinct channel conditions are paired together, NOMA still achieves higher total EC (compared to OMA) in high SNR regime as the user group size becomes larger, although the EC performance of both NOMA and OMA reduces with the increase in group size. It is expected that the derived analytical framework can serve as a useful reference and practical guideline for designing favourable orthogonal and nonorthogonal spectrum access schemes in supporting low-latency services.

(2)

pdf

Low latency driven effective capacity analysis for non-orthogonal and orthogonal spectrum access278.17 kB

Open Access

url

http://globecom2018.ieee-globecom.org/

Organisation

: Low latency driven effective capacity analysis for non-orthogonal and orthogonal spectrum access
: Wenjuan Yu
Leila Musavian
Atta ul Quddus
Qiang Ni
Pei Xiao
: Proceedings of 2018 IEEE Global Communications Conference (GLOBECOM)
: 2018 IEEE Global Communications Conference (GLOBECOM) (Abu Dhabi, UAE, 09/12/2018 - 13/12/2018)
: Institute of Electrical and Electronics Engineers (IEEE)
: 2018
: 03/10/2018
: Funder: Engineering and Physical Sciences Research Council (EPSRC) | Grant ID: EP/K011693/1
: 99515229202346
: © 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
: School of Computer Science and Electronic Engineering
: Conference proceeding