System level 5G evaluation of GFDM waveforms in an LTE-A platform

Al-Juboori, Ghaith; Doufexi, Angela; Nix, Andrew R

doi:10.1109/iswcs.2016.7600925

Cited by 10 publications

(6 citation statements)

References 13 publications

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“…Generalized frequency division multiplexing (GFDM) [25], [26]is performed by investigating OFDM symbols collected into a block and adding a cyclic prefix to the block. Additionally, the prototype filter g(n) ((4)),uses circular convolution in time and will be well localized in the frequency domain.…”

Section: ) Generalized Frequency Division Multiplexing (Gfdm) Waveformmentioning

confidence: 99%

“…The interference cancellation (IC) scheme can be implemented to improve the modulation as non-orthogonal but will increase the complexity of the receiver [71]. The GFDM system has flexible filters using both non-orthogonal filters and orthogonal filters [25], [26]. Another interesting finding was that the transmitter filtering is more flexible, resulting in low OOB and lower PAPR.…”

Section: E Gfdm Waveforms Criteriamentioning

confidence: 99%

“…The previous studies had been built on the proposition that PSD will be very useful with FB−OFDM for creating coexistence with CP−OFDM users. References [26] and [28] show that numerous studies have been carried out both in academia and industry on the coexistence between FB−MC waveforms and CP−OFDM because of its encouraging outcomes. However, the outcomes of this experimental work [26], did not include comparisons of the achieved values for error vector magnitude with multiply secondary waveforms.…”

Section: Previousse Coexistence Studiesymentioning

confidence: 99%

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Green Coexistence for 5G Waveform Candidates: A Review

2019

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There is a growing demand for 5G applications in all fields of knowledge. Current applications, such as the Internet of Things, smart homes, and clean energy, require sophisticated forms of 5G waveforms. Researchers and developers are investigating the requirements of 5G networks for better waveform types, which will result in high spectrum efficiency and lower latency with less complexity in systems. This paper proposes an assessment of various 5G waveform candidates [filtered orthogonal frequency-division multiplexing (OFDM), universal filtered multicarrier (UFMC), filter bank multicarrier (FBMC), and generalized frequency-division multiplexing] under the key performance indicators (KPIs). This paper assesses the main KPI factors (computational complexity, peak-to-average-power ratio, spectral efficiency, filter length, and latency). Moreover, this paper compares and evaluates all KPI factors in various 5G waveforms. Finally, this paper highlights the strengths and weaknesses of each waveform candidate based on the KPI factors for better outcomes in the industry. In conclusion, the current review suggests the use of optimized waveforms (FBMC and UFMC) for better flexibility to overcome the drawbacks encountered by previous works. Regarding coexistence, FBMC and UFMC showed better coexistence with CP-OFDM in 4G networks with a new radio spectrum. The rapprochement between the above-mentioned waveforms has been called green coexistence and is due to the mix between one waveform in 4G networks and two waveforms in 5G networks based on the subcarrier and subband shaping (FBMC and UFMC).

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Section: ) Generalized Frequency Division Multiplexing (Gfdm) Waveformmentioning

confidence: 99%

Section: E Gfdm Waveforms Criteriamentioning

confidence: 99%

Section: Previousse Coexistence Studiesymentioning

confidence: 99%

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Green Coexistence for 5G Waveform Candidates: A Review

2019

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“…The reason for this result is that each sub-carrier, in the GFDM case, consists of M samples, therefore, the impact of one sample reflects on M symbols. On the other hand, each frequency sample (sub-carrier) impacts only one symbol of data in the OFDM case [12]. Moreover, the increase of the modulation order (the number of bits in one sample) makes the situation worse for both schemes.…”

Section: A Comparison For Different Channel Modelsmentioning

confidence: 99%

System level 5G evaluation of MIMO-GFDM in an LTE-A platform

Al-Juboori

Doufexi

Nix

2017

2017 24th International Conference on Telecommunications (ICT)

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General rightsThis document is made available in accordance with publisher policies. Please cite only the published version using the reference above. Full terms of use are available: http://www.bristol.ac.uk/pure/about/ebr-terms System Level 5G Evaluation of MIMO-GFDM in an LTE-A PlatformGhaith Al-Juboori, Angela Doufexi and Andrew R. Nix Communication Systems and Networks Group-Department of Electrical and Electronic Engineering University of Bristol, Bristol, United Kingdom. Email: Ghaith.al-juboori, a.doufexi, Andy.nix@bristol.ac.uk Abstract-The 5G physical layer will support applications with different requirements, such as high data rate, ultra low power consumption and low latency. Recently, there is significant interest in the design and performance of new waveforms for 5G. One of the most important candidates is the Generalised Frequency Division Multiplexing (GFDM) waveform. The new waveform must support a smooth transition from current 4G solutions. In this paper, the performance of MIMO-GFDM with spatial multiplexing is studied in the context of LTE-A using the 3D 3GPP-ITU channel model. Additionally, results are compared with corresponding OFDM solutions. Our investigations illustrate that GFDM achieves comparable performance (Packet Error Rate (PER) and throughput), while offering additional gains such as decreased out-of-band radiation, which is a key factor for many 5G applications such as M2M and IoT.

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“…However, the pulse shaping leads to self-interference existing in the transmitted symbols of the GFDM system, which causes the degradation of system performance. Therefore, LTE turbo codes have been used in GFDM system to enhance the error performance, which is named as turbo-coded GFDM (TC-GFDM) [8].…”

Section: Introductionmentioning

confidence: 99%

Polar-Coded GFDM Systems

Niu

Dong

2019

IEEE Access

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Generalized frequency division multiplexing (GFDM) is a block-based non-orthogonal multicarrier modulation scheme proposed for 5G PHY layer. In this paper, to efficiently coordinate the features of interference existing in the GFDM system, we propose a theoretical framework of the polar-coded GFDM (PC-GFDM) system, which allows jointly optimizing the combination of binary polar coding and GFDM modulation. The original GFDM channel is decomposed into multiple bit polarized channels by using a two-stage channel transform. The general modulation partition is performed in the first stage and the bit polarization transform is done in the second stage. Specifically, two schemes are considered for the first stage channel transform, multilevel coding (MLC) and bit-interleaved coded modulation (BICM). Based on the theorem we have proved in this paper that the capacities of channels corresponding to all transmitted symbols are identical, the MLC based PC-GFDM system is designed to optimize the combining of polar codes and GFDM system. Then the BICM based PC-GFDM system is designed to reduce the complexity and processing latency, which yields the suboptimal performance. Simulation results indicate that the proposed PC-GFDM systems significantly outperform the existing turbo-coded GFDM systems because of the joint design between the polar coding and the GFDM modulation. INDEX TERMSPolar codes, GFDM modulation, two-stage channel transform, BICM, MLC.

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System level 5G evaluation of GFDM waveforms in an LTE-A platform

Cited by 10 publications

References 13 publications

Green Coexistence for 5G Waveform Candidates: A Review

Green Coexistence for 5G Waveform Candidates: A Review

System level 5G evaluation of MIMO-GFDM in an LTE-A platform

Polar-Coded GFDM Systems

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