Performance investigation of WOFDM for 5G wireless networks

Ghanim, M. F.

doi:10.11591/ijece.v9i4.pp3153-3158

Cited by 4 publications

(3 citation statements)

References 19 publications

(22 reference statements)

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“…Wavelet OFDM is the challenging technique in multicarrier transmission scheme .recent years, the application of wavelet OFDM in the broadcasting system is keeping on increasing .many areas like hybrid power line communication [9], visible light communication [9],5G communication [10], [11], cognitive radio [12], Multicarrier CDMA [13], UWB system, cognitive UWB [14], and satellite communication uses wavelet OFDM. In conventional FFT there is a requirement cyclic prefix insertion to reduce the intersymbol interference, which consumes large bandwidth.…”

Section: Fig 1: Constellation Diagram Of 16hqam Signalmentioning

confidence: 99%

A Novel Selected Subcarrier Method for Digital Video Broadcasting

2019

IJEAT

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In Digital Video broadcasting there are two types of information namely global and local content. Broadcasting both information using multifrequency network requires large spectrum. To overcome that single frequency network is incorporated.Inorder to transmit both the information in a single frequency network, a novel technique, namely selected subcarrier method of Digital Video Broadcasting is proposed. This technique is well suited in a scenario where the transmission of two different information is targeted over the entire globe at the same time. This methodology proficiently handles the concept of Orthogonality principles among the OFDM subcarrier. In this technique certain dedicated subcarrier is used for transmission of Local content in the network.Also, wavelet-based OFDM has been proposed, which outperforms the existing Fourier based OFDM

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Section: Fig 1: Constellation Diagram Of 16hqam Signalmentioning

confidence: 99%

A Novel Selected Subcarrier Method for Digital Video Broadcasting

2019

IJEAT

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“…In the traditional OFDM systems, the fast Fourier transform (FFT) is used for fulfilling the requirement of orthogonality between the different subcarriers [4]- [8]. FFT has a major drawback arising from using rectangular window, which creates high side lobes in the transmitting signals, thereby increase sensitivity of the OFDM system to the Inter-Carrier Interference (ICI) and a low system performance [9]- [14]. Discrete multiwavelet critical-sampling transform based OFDM system (DMWCST-OFDM) was proposed to mitigate the impairments of FFT based OFDM system [15]- [20].…”

Section: Introductionmentioning

confidence: 99%

Field programmable gate array implementation of multiwavelet transform based orthogonal frequency division multiplexing system

Hadi

Jafaar²,

Alameri³

et al. 2022

IJECE

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This article offers an efficient design and implementation of a discrete multiwavelet critical-sampling transform based orthogonal frequency division multiplexing (DMWCST-OFDM) transceiver using field programmable gate array (FPGA) platform. The design uses 16-point discrete multiwavelet critical-sampling transform (DMWCST) and its inverse as main processing modules. All modules were designed using a part of Vivado<sup>®</sup> Design Suite version (2015.2), which is Xilinx system generator (XSG), and is compatible with MATLAB Simulink version R2013b. The FPGA implementation is carried out on a Zynq (XC7Z020-1CLG484) evaluation board with joint test action group (JTAG) hardware co-simulation. According to the results obtained from the implementation tools, the implemented system is efficient in terms of resource utilization and could support the real-time operations.

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“…Thus in our work we may use simple algorithm only, namely Bhattacharyya bounds based construction. The readers wanting to go deeper into the current study may experiment separately the orthogonal frequencydivision multiplexing (OFDM) [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24] and exploit our approach to get the effect of such modulation technique on the performance of the code construction. Obviously, OFDM is still an ultimate candidate for wireless applications, since it allows resolving the well-known problem of spectrum underutilization [25].…”

Section: Introductionmentioning

confidence: 99%

Study of the operational SNR while constructing polar codes

Benkhouya¹,

Chana²,

Hadi³

2020

IJECE

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Channel coding is commonly based on protecting information to be communicated across an unreliable medium, by adding patterns of redundancy into the transmission path. Also referred to as forward error control coding (FECC), the technique is widely used to enable correcting or at least detecting bit errors in digital communication systems. In this paper we study an original FECC known as polar coding which has proven to meet the typical use cases of the next generation mobile standard. This work is motivated by the suitability of polar codes for the new coming wireless era. Hence, we investigate the performance of polar codes in terms of bit error rate (BER) for several codeword lengths and code rates. We first perform a discrete search to find the best operating signal-to-noise ratio (SNR) at two different code rates, while varying the blocklength. We find in our extensive simulations that the BER becomes more sensitive to operating SNR (OSNR) as long as we increase the blocklength and code rate. Finally, we note that increasing blocklength achieves an SNR gain, while increasing code rate changes the OSNR domain. This trade-off sorted out must be taken into consideration while designing polar codes for high-throughput application.

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Performance investigation of WOFDM for 5G wireless networks

Cited by 4 publications

References 19 publications

A Novel Selected Subcarrier Method for Digital Video Broadcasting

A Novel Selected Subcarrier Method for Digital Video Broadcasting

Field programmable gate array implementation of multiwavelet transform based orthogonal frequency division multiplexing system

Study of the operational SNR while constructing polar codes

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