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İptal
Bulunan: 8 Adet 0.003 sn
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Filtreler
Filtreler
Bulunan: 8 Adet 0.003 sn
Konu Başlıkları : OFDM ✕Konu Başlıkları : Waveform design ✕
Koleksiyon [3]
İlgili Araştırmacılar [3]
Tam Metin [2]
Tür [2]
Yazar [4]
Alt Tür [1]
Alt Tür 1 [1]
Konu Başlıkları [20]
Açık Erişim Tarihi [1]
Tarih [4]
Dizin Platformu [3]
İsmi Geçen [3]
WOS Kategorileri [1]
Erişime Açık

ZT DWT-S OWDM: A new waveform for PAPR reduction

Ali ÖZEN | Büşra CENİKLİOĞLU

In this study, a novel zero tail discrete wavelet transform spread orthogonal wavelet division multiplexing (ZT DWT-S OWDM) waveform design has been proposed as a solution to the problem of poor peak to average power ratio (PAPR) performance of conventional orthogonal frequency division multiplexing (OFDM) systems. The effects of different waveletfamilies such as Haar, Daubechies, Symlets, Coiflets and Bi-Orthogonal on PAPR performance of ZT DWT-S OWDM systems are investigated. Computer simulation studies are carried out to compare the ZT DWT-S OWDM waveform with the conventional OFDM and zero ...Daha fazlası

Bildiri 2018 IEEE 41th International Conference on Telecommunications and Signal Processing, TSP 2018 , pp. 1 - 16 10 Görüntülenme
Erişime Açık

Channel tracking performance of zero tail discrete cosine transform spread ofdm waveform

Ali ÖZEN

In this paper, zero-tail discrete cosine transform spread OFDM (ZT DCT-S OFDM) waveform is proposed as an alternative to 5th generation (5G) waveform enhancement studies. In order to verify the performance of the proposed method and compare with the conventional OFDM and zero-tail discrete Fourier transform spread OFDM (ZT DFT-S OFDM) systems, computer simulations are performed on time invariant and time variant frequency selective Rayleigh fading channels. The obtained simulation results show that the proposed ZT DCTS OFDM method has better bit error rate (BER) and channel tracking (carrier f ...Daha fazlası

Bildiri 2018 IEEE 41th International Conference on Telecommunications and Signal Processing, TSP 2018 , pp. 9 - 12 7 Görüntülenme
Erişime Açık

Gas detection robot for closed area

Ali ÖZEN

In this study, zero tail inverse Lifting wavelet transform spread fast Walsh Hadamard transformed OFDM (ZT-ILWTs FWHT OFDM) is recommended as an alternative to the OFDM waveform for the new generation of wireless transmission systems. The recommended waveform is composed of a combination of inverse Lifting wavelet transform (ILWT) and fast Walsh Hadamard transform (FWHT) with OFDM waveform. The proposed waveform is tested with computer simulation studies for bit error rate (BER), peak to average power ratio (PAPR) and out of band emission (OOBE) performance criteria. From the attained results, ...Daha fazlası

Bildiri 2019 3. International Scientific and Vocational Studies Congress , pp. 1 - 6 5 Görüntülenme
Erişime Açık

Dual tree complex wavelet transform based multi carrier communication systems

Ali Özen

In this paper, DT-CWT-OFDM waveform based on dual tree complex wavelet conversion (DT-CWT) is introduced to enhance the achievement of the classical OFDM waveform. IFFT/FFT blocks used in the classical OFDM waveform are replaced with IDTCWT/DTCWT blocks in the DT-CWT-OFDM waveform. In order to confirm the achievement of the investigated waveform and compare it with the waveforms of classical OFDM and discrete wavelet conversion based OFDM (DWT-OFDM), computer simulation studies are carried out on AWGN, flat Rayleigh damping and frequency-selective Rayleigh damping channels. It is seen from the ...Daha fazlası

Bildiri 2019 IEEE 42th International Conference on Telecommunications and Signal Processing, TSP 2019 , pp. 6 - 654 7 Görüntülenme
Erişime Açık

A novel waveform design based on lifting wavelet transform for the 5g beyond

Ali Özen

In this paper, a new waveform design based on Lifting Wavelet Transform (LWT) is proposed for next generation wireless communication systems. The proposed waveform design (LWT-UFMC) consists of combination of the LWT and universal filtered multi carrier (UFMC) waveform. It is aimed to improve the performance of the UFMC waveform, which is from the 5th Generation (5G) waveform candidates, with the proposed LWT-UFMC waveform. Computer simulation studies are performed to test the achievement of the recommended waveform and to compare with the classical OFDM and UFMC in AWGN and flat Rayleigh fadi ...Daha fazlası

Bildiri 2019 IEEE 42th International Conference on Telecommunications and Signal Processing, TSP 2019 , pp. 6 - 663 5 Görüntülenme
Erişime Açık

A New waveform design based on sequentially connected ILWT and FWHT transforms

Ali ÖZEN

In this study, zero tail inverse Lifting wavelet transform spread fast Walsh Hadamard transformed OFDM (ZT-ILWTs FWHT OFDM) is recommended as an alternative to the OFDM waveform for the new generation of wireless transmission systems. The recommended waveform is composed of a combination of inverse Lifting wavelet transform (ILWT) and fast Walsh Hadamard transform (FWHT) with OFDM waveform. The proposed waveform is tested with computer simulation studies for bit error rate (BER), peak to average power ratio (PAPR) and out of band emission (OOBE) performance criteria. From the attained results, ...Daha fazlası

Bildiri 2020 43rd International Conference on Telecommunications and Signal Processing (TSP) 8 Görüntülenme
Erişime Açık

A novel concatenated lwt and wht based ufmc waveform design forthe next generation wireless communication systems

Ali ÖZEN | Asuman SAVAŞÇIHABEŞ

A novel concatenated Lifting Wavelet Transform (LWT) and Walsh Hadamard Transform (WHT) with Universal Filtered MultiCarrier (UFMC) waveform is suggested as an alternative to Orthogonal Frequency Division Multiplexing (OFDM) waveformfor the next generation wireless telecommunication systems in this paper. The suggested waveform is composed of LWT andWHT with UFMC waveform. Both the elimination the disadvantages of OFDM and the improvement the achievement of UFMCwaveform, from the fifth generation waveform candidates, has been aimed with the suggested waveform. In order to verify theperformance ...Daha fazlası

Makale/Derleme 2020 IEEJ Transactions on Electrical and Electronic Engineering 17 Görüntülenme
Erişime Açık

A novel gfdm waveform design based on cascaded wht-lwt transform for the beyond 5g wireless communications

Asuman SAVAŞÇIHABEŞ | Ali ÖZEN

In this paper, a new WHT-LWT-GFDM waveform obtained by combining Walsh–Hadamard Transform (WHT), Lifting Wavelet Transform (LWT), and Generalized Frequency Division Multiplexing (GFDM) is presented for use in next-generation wireless communication systems. The proposed approach meets the requirement of 5th-generation (5G) and beyond communication schemes in terms of low latency, low peak-to-average-power ratio (PAPR), and low bit-error rate (BER). To verify the performance of the presented waveform, PAPR and BER simulation results were obtained in additive white Gaussian noise (AWGN) and flat ...Daha fazlası

Makale/Derleme 2021 Sensors 11 Görüntülenme
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