A Filtered OFDM Using FIR Filter Based on Window Function Method

Cheng, Xudong; He, Yejun; Ge, Baohong; He, Chunlong

doi:10.1109/vtcspring.2016.7504065

Cited by 39 publications

(24 citation statements)

References 11 publications

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“…A whole F-OFDM system hyperlink is proven in Figure-3. The transmit facts be virtual binary movement, also modulation is that the approach with the aid of that the signal wave is re modeled and transformed through channel to attenuate the result of noise [3]. In LTE device, QuadratureoAmplitudeoModulation (QAM) is employed furthermore right here we generally tend to moreover use QAM with absolutely unique modulation preparation.…”

Section: Fig3 F-ofdm Block Diagrammentioning

confidence: 99%

“…IFFT is completed at the modulated signal to create it into OFDM image with N will be the IFFT or FFT length. CP is extra to keep away from bury photo interference because of the put off unfold of wireless channels [3], whereas the CP size differs with the diverse communiqué conditions. The filter f(n) is a FIR filter which have special type of window functions to attain F-OFDM.…”

Section: Fig3 F-ofdm Block Diagrammentioning

confidence: 99%

“…The layouts of F-OFDM extraordinarily resemble OFDM aside from the actual reality that it is a properly-planned clears out intercalary to that. F-OFDM is ready to beat the regulations of OFDM through sub-band-primarily based filtering that continues the sub carriers many of the allocated frequency spectrums [3]. This wave form candidate may additionally accomplish every of the very crucial necessities of 5 th era networks that have been mentioned antecedently.…”

Section: Introductionmentioning

confidence: 99%

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Filtered-Orthogonal Frequency Division Multiplexing Technique for 5th Generation Mobile Communication

Nejakar*¹,

Benakop²,

Biradar³

et al. 2019

IJITEE

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The imminent 5G cellular verbal exchange machine is expected to own excessive facts fees, low latency and support a massive range of devices. Except for this, gadget type communiqué is anticipated to be treated by way of 5G gadget in a very better and within your means approach. For this reason, forms of waveform applicants are projected. F-OFDM is a few of the projected applicants for 5G systems that extremely resembles to its precursor it's OFDM. The important difference among the two multi carrier waveforms is that the use of a well-designed clear out. F-OFDM as compared with OFDM so provides reduced out of band emission that allows it to utilize the allocated spectrum expeditiously. This analysis paper presents F-OFDM overall performance with absolutely different modulation schemes like QPSK, 16QAM, 64QAM and 256QAM techniques using MATLAB.

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Section: Fig3 F-ofdm Block Diagrammentioning

confidence: 99%

Section: Fig3 F-ofdm Block Diagrammentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Filtered-Orthogonal Frequency Division Multiplexing Technique for 5th Generation Mobile Communication

Nejakar*¹,

Benakop²,

Biradar³

et al. 2019

IJITEE

View full text Add to dashboard Cite

show abstract

“…Additionally, it supports only one type of waveform parameters in entire bandwidth. Whilst, f-OFDM that created by modify OFDM is dividing the system's bandwidth into a number of subbands, each subband then filtered via various filter and thus support several waveform parameters based on various service scenarios [3].…”

Section: Introductionmentioning

confidence: 99%

“…The filter in f-OFDM system has been designed in this paper depending on FIR digital filter based on window function method in order achieving very low OOBE. Where, by using window function will be obtaining lower OOBE performance through occupying a bigger filter's bandwidth [3]. The idea in f-OFDM is representing by recusing the interferences between neighbouring subbands, where each subband of the baseband OFDM signals is filtered via a band-limited filter to combat its OOBE, thus minimizing the interference from neighbouring subbanns to enough level [25].…”

mentioning

confidence: 99%

BCH codes for 5G wireless communication systems over multipath fading channel

Hussain

Audah

2020

IJEECS

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<span>Due to its large peak to average power ratio (PAPR) and high out of band emission (OOBE), OFDM doesn't meet the requirements of 5G services. Additionally, it supports only one type of waveform parameters in entire bandwidth. In contrast, f-OFDM is dividing the system's bandwidth into a number of subbands to support several waveform parameters based on various service scenarios. So, Filtered-OFDM (f-OFDM) is considered as a modern enabler of the flexible waveform to overcome the OFDM drawbacks while remaining its advantages as well as, to encounter the new challenges that faced 5G. Nonetheless, there is a trade-off among OOBE, PAPR and SNR performance. Meanwhile, channel coding technology is one of the most important issue in physical layer which is playing an essential role in order to achieve the reliability and latency. So, BCH code has been suggested in this paper for f-OFDM system to achieve the reliability of transmission information and thus improving BER performance over multipath fading channel. Whilst, BCH-LTE system is introduced as a baseline in this paper that using for comparison purpose with proposed system. Simulation results showed that the proposed BCH-f-OFDM system was significantly better than BCH-LTE system in terms of decreasing OOBE and achieving improving in BER performance. Although, PAPR levels was stilling high in proposed system due to the trade-off among OOBE, PAPR and SNR performance. However, the proposed system is considered a promising candidate to meet the requirements of 5G services because of its ability to solve two important issues in between three trade-offs'.</span>

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A novel out‐of‐band emission suppression method in future wireless communications employing filtered orthogonal frequency division multiplexing waveform

Chen

Wen

Hua

et al. 2022

Int J Communication

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Summary In order to achieve flexible configuration and asynchronous transmission of different subbands (SBs), SB filters are utilized in filtered orthogonal frequency division multiplexing (f‐OFDM) systems to isolate different SBs efficiently. Nevertheless, the price is the insertion of some intrinsic interference.Therefore, the suppression of the out‐of‐band emission (OOBE) between SBs is essential for the system performance improvement of f‐OFDM. According to the system structure of f‐OFDM, an optimization design model based on active interference cancelation (AIC) is proposed in this study, and the optimization design model is solved through second order cone programming. Furthermore, the effectiveness of the proposed AIC algorithm in OOBE suppression is verified by computer simulations. To the whole system, the OOBE suppression also means the decrease of inter‐SB interference (ITBI). In addition, the influences of main parameters, such as the number of the cancelation carriers (CCs), on the OOBE suppression performance of the proposed AIC algorithm, are simulated and analyzed. Moreover, some intrinsic characteristics of the proposed algorithm in parameter configuration are revealed in terms of power spectral density (PSD) and bit error ratio (BER).

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A Filtered OFDM Using FIR Filter Based on Window Function Method

Cited by 39 publications

References 11 publications

Filtered-Orthogonal Frequency Division Multiplexing Technique for 5th Generation Mobile Communication

Filtered-Orthogonal Frequency Division Multiplexing Technique for 5th Generation Mobile Communication

BCH codes for 5G wireless communication systems over multipath fading channel

A novel out‐of‐band emission suppression method in future wireless communications employing filtered orthogonal frequency division multiplexing waveform

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