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OFDM synchronization system using wavelet transform for symbol rate detection

Masaru Sawada, Quang Ngoc Nguyen, Mohammed Mustafa Alhasani, Cutifa Safitri, Takuro Sato
2020 TELKOMNIKA (Telecommunication Computing Electronics and Control)  
His contributions are mainly in high-speed cellular modem standardization for ITU, 2.4GHz PCS for ITA and WLAN technology (IEEE 802.11), and so on. He has authored 11 books and more than 200 papers.  ...  Tokyo, as a professor and currently serving as the Dean. He has developed a wideband CDMA system for personal communication systems and joined the PCS standardization committee in the USA and Japan.  ...  ACKNOWLEDGEMENTS This research was partly funded by Waseda University Grant for Special Research Projects grant number 2019C-174.  ... 
doi:10.12928/telkomnika.v18i3.14834 fatcat:ijfw6gxmpbdqhcn44xi5on6bxy

Sparse Index OFDM Modulation for IoT Communications

Hany S. Hussein, Ahmed S. Mubarak, Osama A. Omer, Usama S. Mohamed, Mostafa Salah
2020 IEEE Access  
Generally, the transmitted data of OFDM/OFDM-IM signal resides in its frequency domain. Hence, the detection process can be regarded as a spectral estimation problem.  ...  Figure. 4 shows an example for indexing recovery from real/ imaginary subcarrier spaces under = 4 and = 1.  ... 
doi:10.1109/access.2020.3024157 fatcat:keb5qi3d7na5zcu4zzefzthgbu

Joint Channel Estimation and Synchronization Techniques for Time-Interleaved Block-Windowed Burst OFDM

João Martins, Filipe Conceição, Marco Gomes, Vitor Silva, Rui Dinis
2021 Applied Sciences  
Modulation schemes based on orthogonal frequency-domain multiplexing (OFDM) can accommodate these requirements for wireless systems.  ...  Several hybrid OFDM-based systems, such as the time-interleaved block-windowed burst–OFDM (TIBWB–OFDM), are capable of achieving even better spectral confinement and power efficiency.  ...  Section 4 presents the discussion and analysis of the results of channel estimation algorithms and frame detection for the TIBWB-OFDM system.  ... 
doi:10.3390/app11104403 fatcat:c5ne7s2tubgwbeka2e4tfharpy

On Reducing the Complexity of Tone-Reservation Based PAPR Reduction Schemes by Compressive Sensing

Eprahim B. Al-Safadi, Tareq Y. Al-Naffouri
2009 GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference  
to detect the positions and amplitudes of clipped peaks, by partial observation of their frequency content at the receiver.  ...  Since previous work in the literature has focused on using the reserved tones as spectral support for optimum peak-reducing signals in the time-domain [5] , the complexity at the transmitter was always  ...  Denoting Ω as the set of frequencies in an OFDM signal of cardinality |N |, let Ω d ⊂ Ω be the set of frequencies that are used for data transmission and Ω c = Ω\Ω d the complementary set reserved for  ... 
doi:10.1109/glocom.2009.5425904 dblp:conf/globecom/Al-SafadiA09 fatcat:npqv4clpy5hahfwzmzqs7gocrq

Interference-Free Transceiver Design and Signal Detection for Ambient Backscatter Communication Systems over Frequency-Selective Channels [article]

Chong Zhang, Gongpu Wang, Panagiotis D. Diamantoulakis, Feifei Gao,, George K. Karagiannidis
2018 arXiv   pre-print
Meanwhile, our design results in no interference on the existing OFDM communication systems. We also suggest a maximum likelihood (ML) detector for the reader and derive two detection thresholds.  ...  Our design utilizes the cyclic prefix (CP) of orthogonal frequency-division multiplexing (OFDM) source symbols, which can cancel the signal interference and thus enhance the detection accuracy at the reader  ...  Equiprobable Error Threshold In this subsection, we discuss the detection threshold that can obtain the same error probability for B(n) = 0 and B(n) = 1, i.e., p 0 = p 1 [2] .  ... 
arXiv:1812.11278v1 fatcat:2j2uuaerdbfa7bvtkkfpyn2zum

Joint time-frequency domain cyclostationarity-based approach to blind estimation of OFDM transmission parameters

Zhuo Sun, Ruzhe Liu, Wenbo Wang
2013 EURASIP Journal on Wireless Communications and Networking  
The approach exploits the cyclostationarity of OFDM both in time delay domain and cyclic frequency domain; a statistic hypothesis testing framework was formulated to determine the threshold for detecting  ...  Blind estimation of the transmission parameters of orthogonal frequency division multiplexing (OFDM) signal is an important issue for various civilian and military applications.  ...  The analysis above employs the CC for continuous-time OFDM signal.  ... 
doi:10.1186/1687-1499-2013-117 fatcat:63umgzp36rbfxlr4zv44fijhaa

Towards spectral efficiency enhancement for IoT-aided smart transportation: a compressive OFDM transmission and regularized recovery approach

Yusi Zhang, Yong Li, Xiaojie Fang, Xuejun Sha, Yuqing Feng, Weizhi Wang
2022 EURASIP Journal on Advances in Signal Processing  
At 10 dB $$E_{\mathrm{b}}/N_{0}$$ E b / N 0 , the throughput rate of the compressive OFDM is 2 times and 1.6 times higher than OFDM and SEFDM, respectively.  ...  The idea of compressing the transmission of OFDM signal for spectral efficiency enhancement origins from GP extrapolation algorithm for bandlimited signal.  ...  Acknowledgements The authors would like to acknowledge all the participants for their contributions to this research study.  ... 
doi:10.1186/s13634-022-00843-w fatcat:wcqzvye6y5adzgjxaqhreq2v7e

Reducing the peak-to-average power ratio of multicarrier modulation by selected mapping

R.W. Bäuml, R.F.H. Fischer, J.B. Huber
1996 Electronics Letters  
These equations can therefore be used for trade-off analysis and considering their simplicity and multiple applicability, they can also be used in cellular planning.  ...  The minimum required CIR is 9dB when the frequency hopping (FH) option is used and 11 dB without it.  ...  As a measure of system performance., an expression for the mean acquisition time is derived for the considered system in terms of the probabilities of detection and false alarm.  ... 
doi:10.1049/el:19961384 fatcat:iuj5cs2gzbdaza5stqdfixc7mu

High Resolution OFDM Channel Estimation with Low Speed ADC Using Compressive Sensing

Jia Meng, Yingying Li, Nam Nguyen, Wotao Yin, Zhu Han
2011 2011 IEEE International Conference on Communications (ICC)  
Orthogonal frequency division multiplexing (OFDM) is a technique that will prevail in the next generation wireless communication. Channel estimation is one of the key challenges in an OFDM system.  ...  Specifically, it significantly reduces estimation error by combing 1 minimization with iterative support detection and limited-support least-squares.  ...  Due to the page limitation, we omit rigorous mathematical analysis of (3) and its guaranteed recovery.  ... 
doi:10.1109/icc.2011.5962563 dblp:conf/icc/MengLNYH11 fatcat:heko66qlsfg3xgmugcuxejhglu

Performance Analysis and Comparison of Clipped and Filtered OFDM Systems with Iterative Distortion Recovery Techniques

Ying Sun, Hideki Ochiai
2021 IEEE Transactions on Wireless Communications  
into time-domain (TD) and frequency-domain (FD) compensation approaches: The former and latter are represented by the decision-aided reconstruction (DAR) and clipping noise cancellation (CNC), respectively  ...  Furthermore, we introduce a time-domain distortion model for characterizing the OFDM signal with CAF, based on which we make performance comparison between the two compensation approaches.  ...  (email: sun-yingkz@ynu.jp; hideki@ynu.ac.jp) (Corresponding author: Hideki Ochiai) This work was supported in part by MIC/SCOPE under Grant 205003001 and the Japan Society for the Promotion of Science  ... 
doi:10.1109/twc.2021.3083537 fatcat:m6scxh5edfglbd7whfytcksylm

Distributed Structured Compressive Sensing-Based Time-Frequency Joint Channel Estimation for Massive MIMO-OFDM Systems

Wenjie Zhang, Hui Li, Rong Jin, Shanlin Wei, Wei Cheng, Weisi Kong, Penglu Liu
2019 Mobile Information Systems  
In this paper, we propose a more efficient time-frequency joint channel estimation scheme for massive MIMO-OFDM systems to resolve those problems.  ...  Third, through performance analysis of the proposed algorithm, two signal power reference thresholds are given, which can ensure that the signal can be recovered accurately under power-limited noise and  ...  Conclusions In this paper, we proposed a time-frequency joint channel estimation scheme for massive MIMO-OFDM systems.  ... 
doi:10.1155/2019/2634361 fatcat:jzppca6jsjg37itvoksgkrpg24

Orthogonal Time-Frequency Multiplexing with 2D Hermitian Symmetry for Optical-Wireless Communications

Jie Zhong, Ji Zhou, Weiping Liu, Jiayin Qin
2020 IEEE Photonics Journal  
In this article, we take advantage of OTFS and propose a new orthogonal time-frequency multiplexing (OTFM) scheme for DC-biased OWC.  ...  However, its good performance on time-frequency plane multiplexing for optical-wireless communications (OWC) has never been fully investigated.  ...  The required SNRs of DCO-OTFM to achieve the threshold of BER, i.e, BER of 1 × 10 −3 , are lower than for DCO-OFDM in both 4QAM and 16QAM.  ... 
doi:10.1109/jphot.2020.2972587 fatcat:x3t6e3zd55dfbeplcjqzdo7squ

PAPR Reduction in Optical OFDM using Lexicographical Permutations with Low Complexity

Roland Niwareeba, Mitchell A. Cox, Ling Cheng
2021 IEEE Access  
However, the existing works focus on PAPR reduction using SPP for the radio frequency (RF) OFDM and the use of this technique in optical OFDM is not properly investigated.  ...  substantially depending on the selected threshold and the number of candidate signals.  ...  In order to obtain a better approximation of the PAPR of the time domain signal, the frequency domain symbol is usually over-sampled L times.  ... 
doi:10.1109/access.2021.3138193 fatcat:f7e2mramcncrppguflqnykzwdq

OFDM Signal Recovery in Deep Faded Erasure Channel

Alireza Rahmati, Kaamran Raahemifar, Theodoros A. Tsiftsis, Alagan Anpalagan, Paeiz Azmi
2018 IEEE Access  
Furthermore, a new iterative receiver is proposed for perfect symbol recovery.  ...  the typical detector for the OFDM scheme.  ...  in DFT-based schemes [41] , easing the DAC design [33] , achieving blind carrier-frequency-offset recovery [42] , detection and channel estimation [43] , [44] , and clipping noise suppression [45  ... 
doi:10.1109/access.2018.2876646 fatcat:askjeqezwbecxlfjxf7asldufy

Sparse-Encoded Codebook Index Modulation [article]

Emre Arslan, Ali Tugberk Dogukan, Ertugrul Basar
2020 arXiv   pre-print
Ultra-reliable and low-latency communications (URLLC) partakes a major role in 5G networks for mission-critical applications.  ...  SVC exploits the virtual digital domain (VDD) and compressed sensing (CS) algorithms to encode and decode its information through active symbol indices.  ...  COMPLEXITY ANALYSIS In this section, we analyze the complexity of E-SVC-OFDM and SE-CBIM detectors in terms of the running time as in [11] .  ... 
arXiv:2004.08330v1 fatcat:v5jm6gvg6nhpri3h2hmgzw2ibq
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