Multidimensional OAM-based secure high-speed wireless communications

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

To address key challenges for beyond 5G wireless technologies in a simultaneous manner, we propose an orbital angular momentum (OAM)-based, secure, energy-efficient multidimensional coded modulation. The key idea is to employ all available degrees of freedom (DOFs) to convey the information over the wireless links, including amplitude, phase, polarization state, and spatial-domain DOFs. In particular, the OAM is associated with the azimuthal phase dependence of the wavefront, and represents an underutilized DOF. Given that OAM eigenstates are orthogonal, an arbitrary number of bits per symbol can be transmitted. Here, we propose utilizing OAM DOF not only to improve spectral and energy efficiencies, but also to significantly improve the physical-layer security of future wireless networks. To implement the OAM multiplexer and demultiplexer in the RF domain, we propose using properly designed antenna arrays. We also propose employing the Slepian sequences as either basis functions in baseband or impulse responses of antenna arrays in passband to further increase the dimensionality of the wireless system and enable beyond 1-Tb/s wireless transmission. Monte Carlo simulations demonstrate high tolerance to fading effects of LDPC-coded multidimensional signaling schemes compared with the conventional LDPC-coded QAM.

Original languageEnglish (US)
Article number8002571
Pages (from-to)16416-16428
Number of pages13
JournalIEEE Access
Volume5
DOIs
StatePublished - Aug 4 2017

Fingerprint

Angular momentum
Communication
Degrees of freedom (mechanics)
Antenna arrays
Quadrature amplitude modulation
Wavefronts
Impulse response
Telecommunication links
Energy efficiency
Wireless networks
Modulation
Polarization

Keywords

  • Coded modulation
  • forward error correction
  • low-density parity-check codes
  • multidimensional signaling
  • OAM antennas
  • physical-layer security
  • wireless communications

ASJC Scopus subject areas

  • Computer Science(all)
  • Materials Science(all)
  • Engineering(all)

Cite this

Multidimensional OAM-based secure high-speed wireless communications. / Djordjevic, Ivan B.

In: IEEE Access, Vol. 5, 8002571, 04.08.2017, p. 16416-16428.

Research output: Contribution to journalArticle

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