Sparse Vector Coding for Ultra Reliable and Low Latency Communications

Hyoungju Ji, Sunho Park, Byonghyo Shim

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)

Abstract

Ultra reliable and low latency communication (URLLC) is a newly introduced service category in 5G to support delay-sensitive applications. In order to support this new service category, the 3rd Generation Partnership Project (3GPP) sets an aggressive requirement that a packet should be delivered with 10-5 packet error rate within 1-ms transmission period. Since the current wireless transmission scheme, which is designed to maximize the coding gain by transmitting the capacity achieving long codeblock, is not relevant for this purpose, and a new transmission scheme to support URLLC is required. In this paper, we propose a new approach to support the short packet transmission, called sparse vector coding (SVC). The key idea behind the proposed SVC technique is to transmit the information after the sparse vector transformation. By mapping the information into the position of nonzero elements and then transmitting it after random spreading, we obtain an underdetermined sparse system for which the principle of compressed sensing can be applied. From the numerical evaluations and performance analysis, we demonstrate that the proposed SVC technique is very effective in URLLC transmission and outperforms the 4G LTE and LTE-Advanced scheme.

Original languageEnglish
Article number8434268
Pages (from-to)6693-6706
Number of pages14
JournalIEEE Transactions on Wireless Communications
Volume17
Issue number10
DOIs
Publication statusPublished - 2018 Oct
Externally publishedYes

Keywords

  • 5G
  • Short packet transmission
  • support identification
  • ultra reliable and low latency communications

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics

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