A Non-orthogonal Waveform Design with Iterative Detection and Decoding for Narrowband IoT Applications

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


Narrowband Internet of Things (NB-IoT) was proposed by 3GPP in Release 13 to provide low power wide area connections to a high-volume of devices. With the millions of devices expected to connect to 5G through its massive machine-type communication use case, the strict orthogonality and synchronization requirement of cyclic-prefix orthogonal division multiplexing (CP-OFDM) will demand a very large amount of control information between devices and the core network. To overcome this challenge, we study a new air interface for NB-IoT, which utilizes a non-orthogonal multicarrier transmission scheme. The waveform considered in this work is filter-bank muilticarrier with quadrature amplitude modulation (FBMC-QAM). The loss of orthogonality in FBMC-QAM results in severe levels of intrinsic interference. Iterative detection and decoding (IDD) using low density parity check (LDPC) encoding and decoding is implemented together with iterative interference cancellation (IIC) to remove the inherent interference and improve the BER rate performance. Simulation results indicate that the proposed IDD receiver can effectively improve BER performance under time-varying channels.

Original languageEnglish
Title of host publication2019 European Conference on Networks and Communications, EuCNC 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages5
ISBN (Electronic)9781728105468
Publication statusPublished - Jun 2019
Event28th European Conference on Networks and Communications, EuCNC 2019 - Valencia, Spain
Duration: 18 Jun 201921 Jun 2019

Publication series

Name2019 European Conference on Networks and Communications, EuCNC 2019


Conference28th European Conference on Networks and Communications, EuCNC 2019

Bibliographical note

Funding Information:
ACKNOWLEDGEMENT The work described in this paper is supported by the European Union’s Horizon 2020 research programme through the SPOTLIGHT project under grant ID 722788.

Publisher Copyright:
© 2019 IEEE.


  • 5G
  • Internet of Things
  • Iterative decoding
  • NB-IoT
  • Non-orthogonal waveforms
  • OFDM

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