A new FWHT-CMF-DFE based approach for channel equalization in CP-free OFDM systems

[ X ]

Tarih

2021

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

John Wiley and Sons Inc

Erişim Hakkı

info:eu-repo/semantics/openAccess

Özet

Orthogonal frequency division multiplexing (OFDM) has been widely used in wireless communication systems due to its robustness against the frequency selectivity of fading channels. It provides optimal performance and it also meets the requirements of the next generation communication systems. Although OFDM has these advantages, its spectrum efficiency is usually degraded significantly due to the use of cyclic prefix (CP). In this paper, motivated to deal with this issue, the combined structure of Fast Walsh-Hadamard Transform (FWHT) and Time Domain Equalizer (TDE) is proposed to use in CP-free OFDM systems. The results validated by Monte Carlo simulations decipher the improved performances in terms of spectral efficiencies, bit error rate, peak to average power ratio and out of band emission for using this structure over frequency selective multipath fading channels in CP-free OFDM systems. The acquired simulation results have illustrated that the proposed method provides 20% spectral efficiency without compromising the BER performance. © 2021 The Authors. IET Communications published by John Wiley & Sons Ltd on behalf of The Institution of Engineering and Technology

Açıklama

Anahtar Kelimeler

Bit error rate, Efficiency, Equalizers, Frequency selective fading, Hadamard transforms, Monte Carlo methods, Multipath fading, Channel equalization, Fast Walsh-Hadamard transforms, Frequency selective multipath fading channels, Frequency selectivity, Peak to average power ratio, Spectral efficiencies, Time-domain equalizers, Wireless communication system, Orthogonal frequency division multiplexing

Kaynak

IET Communications

WoS Q Değeri

Scopus Q Değeri

Q2

Cilt

15

Sayı

17

Künye