Performance improvement for windowed OFDM using pre-coding and sub-carriers interleaving

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Abstract

This paper discusses the out-of-band emission power reduction technique by window functions and performance improvement scheme for OFDM (Orthogonal Frequency Multiple Access) systems. The windowed OFDM is effective to suppress the out-of-emission band, however, the communication performance is degraded, comparing with the conventional OFDM system. To improve the performance in frequency selective fading channel, the pre-coding using the unitary transform is adopted. Moreover, the performance improvement scheme that data sequence between the unitary transform and IFFT/FFT is interleaved for the pre-coded windowed OFDM system is proposed. The BER (Bit Error Rate) is evaluated to show the effectiveness of the proposed scheme, comparing to the conventional pre-coded windowed schemes and the out-of-band emission power is also reduced.

Original languageEnglish
Title of host publicationICUFN 2021 - 2021 12th International Conference on Ubiquitous and Future Networks
PublisherIEEE Computer Society
Pages311-315
Number of pages5
ISBN (Electronic)9781728164762
DOIs
Publication statusPublished - 17 Aug 2021
Event12th International Conference on Ubiquitous and Future Networks, ICUFN 2021 - Virtual, Jeju Island, Korea, Republic of
Duration: 17 Aug 202120 Aug 2021

Publication series

NameInternational Conference on Ubiquitous and Future Networks, ICUFN
Volume2021-August
ISSN (Print)2165-8528
ISSN (Electronic)2165-8536

Conference

Conference12th International Conference on Ubiquitous and Future Networks, ICUFN 2021
Country/TerritoryKorea, Republic of
CityVirtual, Jeju Island
Period17/08/2120/08/21

Keywords

  • Interleaving
  • Out-of-band emission reduction
  • Pre-coding
  • Walsh-Hadamard Transforms
  • Windowed OFDM

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