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

2019 ◽  
Vol 8 (12) ◽  
pp. 3763-3767
Keyword(s):  
Mobile Communication ◽  
Orthogonal Frequency Division Multiplexing ◽  
Low Latency ◽  
Frequency Division Multiplexing ◽  
Frequency Division ◽  
Band Emission ◽  
Verbal Exchange ◽  
Overall Performance ◽  
5G Systems ◽  
Modulation Schemes

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.

scholarly journals Maximization of Two Techniques of Relay Networks using Co-Operative Protocals

2019 ◽  
Vol 8 (12S) ◽  
pp. 1192-1194
Keyword(s):  
Polynomial Time ◽  
Orthogonal Frequency Division Multiplexing ◽  
Relay Networks ◽  
Frequency Division Multiplexing ◽  
Frequency Division ◽  
Bipartite Matching ◽  
Fundamental Goal ◽  
Hand Off ◽  
Overall Performance

This study recognise the transfer-assisted co-usable transmission in remote systems, where numerous client pairs lead bidirectional interchanges through various transfers depending on the transmission of the Orthogonal Frequency Division Multiplexing. The fundamental goal is to improve the overall execution of the framework by increasing the overall performance. It manages the joint enhancement of channel and hand-off task, subcarrier portion just as hand-off determination. The issue is detailed as a combinatorial improvement issue. It primarily manages two-way transferring and to make it progressively manageable. It received a chart based methodology. Along these lines the issue is fathomed ideally in polynomial time by changing it into Maximum Weighted Bipartite Matching (MWBM) issue. The reproduction result shows the correlation of the proposed calculation and the seat mark alongside two handing-off conventions.

scholarly journals Transceiver Design for GFDM with Hexagonal Time–Frequency Allocation Using the Polyphase Decomposition

Electronics ◽  
2020 ◽  
Vol 9 (11) ◽  
pp. 1862
Author(s):  
Evren Catak ◽  
Arild Moldsvor ◽  
Mohammad Derawi
Keyword(s):  
Energy Consumption ◽  
Computational Complexity ◽  
Communication Systems ◽  
Orthogonal Frequency Division Multiplexing ◽  
Channel Model ◽  
Low Latency ◽  
Frequency Division Multiplexing ◽  
Frequency Division ◽  
Next Generation ◽  
Time Frequency

Generalized frequency division multiplexing (GFDM) is a waveform for the next-generation communication systems to succeed in the drawbacks of orthogonal frequency division multiplexing (OFDM). The symbols of users are transmitted with the time- and frequency-shifted versions of a prototype filter. According to filtering operation, the computational complexity and processing load are high for the devices that suffer from energy consumption. The communication systems are required to support the new generation devices that need low energy consumption and low latency issues. Motivated by such demands of the next-generation communication system, we propose a novel GFDM waveform that we call hexagonal GFDM. The contributions of the hexagonal GFDM are that it: (i) supports short transmission time based on its hexagonal time–frequency allocations; and (ii) provides low latency communication with low computational complexity manner. Furthermore, we design a transmitter and receiver structure in a less complicated way with mathematical derivation by using polyphase decomposition and Fourier transform (FT) transformation. The proposed systems are realized analytically and investigated over Rayleigh fading channel model through computer simulations.

scholarly journals Comparing f-OFDM and OFDM Performance for MIMO Systems Considering a 5G Scenario

2019 ◽  
Author(s):  
Felipe Augusto Pereira de Figueiredo ◽  
Nathália F. T. Aniceto ◽  
Jorge Seki ◽  
Ingrid Moerman ◽  
Gustavo Fraidenraich
Keyword(s):  
Mobile Communications ◽  
Orthogonal Frequency Division Multiplexing ◽  
Error Probability ◽  
Mimo Systems ◽  
Radio Spectrum ◽  
Frequency Division Multiplexing ◽  
Frequency Division ◽  
Primary Users ◽  
Band Emission ◽  
Spectral Localization

The advances mobile communications has seen in recent years has rendered the radio spectrum a limited and, hence, an expensive resource. Therefore, technologies that support unlicensed access to spectrum are needed. Therefore, the adoption of novel modulation schemes becomes of utmost importance to obtain better spectral-localization and reduce the OOBE (\textit{Out of Band Emission}) inherent to OFDM (\textit{Orthogonal Frequency Division Multiplexing}) and, consequently, mitigating the interference between secondary (\textit{unlicensed}) and primary users. In this scenario, we assess the gain in the bit error probability using f-OFDM (\textit{filtered-OFDM}) in MIMO systems, both used in the 5G RANGE project.

scholarly journals Comparing f-OFDM and OFDM Performance for MIMO Systems Considering a 5G Scenario

2019 ◽  
Author(s):  
Felipe Augusto Pereira de Figueiredo ◽  
Nathália F. T. Aniceto ◽  
Jorge Seki ◽  
Ingrid Moerman ◽  
Gustavo Fraidenraich
Keyword(s):  
Mobile Communications ◽  
Orthogonal Frequency Division Multiplexing ◽  
Error Probability ◽  
Mimo Systems ◽  
Radio Spectrum ◽  
Frequency Division Multiplexing ◽  
Frequency Division ◽  
Primary Users ◽  
Band Emission ◽  
Spectral Localization

The advances mobile communications has seen in recent years has rendered the radio spectrum a limited and, hence, an expensive resource. Therefore, technologies that support unlicensed access to spectrum are needed. Therefore, the adoption of novel modulation schemes becomes of utmost importance to obtain better spectral-localization and reduce the OOBE (\textit{Out of Band Emission}) inherent to OFDM (\textit{Orthogonal Frequency Division Multiplexing}) and, consequently, mitigating the interference between secondary (\textit{unlicensed}) and primary users. In this scenario, we assess the gain in the bit error probability using f-OFDM (\textit{filtered-OFDM}) in MIMO systems, both used in the 5G RANGE project.

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