GFDM Interference Mitigation Without Noise Enhancement

Towliat, Mohammad; Tabatabaee, Seyyed Mohammad Javad Asgari

doi:10.1109/lcomm.2018.2813393

Cited by 26 publications

(8 citation statements)

References 10 publications

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“…From the simulation it is observed that the pilot scheme of method 1 gives the best result if compared to the method 2 and the prior works. In future, more challenging scenarios for the GFDM channel estimation such as highly doubly dispersive channels and CGFDM system proposed in [15], which transmits coded symbols and has the same bandwidth efficiency as GFDM will be explored. In term of exploiting the frequency selectivity, GFDM outperforms the OFDM as in [3].…”

Section: Resultsmentioning

confidence: 99%

Pilot Placement Schemes for Channel Estimation of Proposed 5G-GFDM System

2019

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Orthogonal Frequency Division Multiplexing (OFDM) is a highly regarded technique used in the 4G mobile communication systems to provide reliable communication and high data rates due to the orthogonality between its sub carriers. However, it cannot be used in the next generation cellular system i.e. 5G. Thus, a new technique Generalized Frequency Division Multiplexing (GFDM) has been proposed to meet the demands of the next generation systems, which are higher data rates than 4G, minimum response time, lower power consumption etc. GFDM is a non-orthogonal, multicarrier scheme, which seems to fulfil the requirements of the new wireless communication system. The aim of this paper is to use the pilot symbols and their optimum placements within the data for the channel estimation of the GFDM system. It is shown that the optimum arrangement of the pilot symbols is to place them uniformly on equal intervals within the data and to cluster them in the middle of the data.

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Section: Resultsmentioning

confidence: 99%

Pilot Placement Schemes for Channel Estimation of Proposed 5G-GFDM System

2019

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“…We adopt a noise-free GFDM scheme [32] and subject it to channel coding to further improve performance in the sense of reliability. The modified GFDM scheme known as coded generalized frequency division multiplexing (CGFDM), involves transmission of two-symbol blocks consecutively.…”

Section: B Suppressing Self-intrinsic Interference In Gfdmmentioning

confidence: 99%

GFDM frame design for low-latency industrial networks

Ssimbwa

Lim

2022

J. Commun. Netw.

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“…As a result, filtered candidate waveforms with developed features have been introduced recently for the next generations of mobile. For example, the filter bank multi-carrier (FBMC) [8], the universal filter multi-carrier (UFMC) [9], the filtered OFDM (F-OFDM) [10], and the generalized frequency division multiplexing (GFDM) [11]. Consequently, the forthcoming generation of mobile networks can be described as a filtration era.…”

Section: Introductionmentioning

confidence: 99%

Upgrading Physical Layer of Multi-Carrier OGFDM Waveform for Improving Wireless Channel Capacity of 5G Mobile Networks and Beyond

Kadhum

2020

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On the brink of sophisticated generations of mobile starting with the fifth-generation (5G) and moving on to the future mobile technologies, the necessity for developing the wireless telecommunications waveform is extremely required. The main reason beyond this is to support the future digital lifestyle that tends principally to maximize wireless channel capacity and number of connected users. In this paper, the upgraded design of the multi-carrier orthogonal generalized frequency division multiplexing (OGFDM) that aims to enlarge the number of mobile subscribers yet sustaining each one with a high transmission capacity is presented, explored, and evaluated. The expanded multi-carrier OGFDM can improve the performance of the future wireless network that targets equally the broad sharing operation (scalability) and elevated transmission rate. From a spectrum perspective, the upgraded OGFDM can manipulate the side effect of the increased number of network subscribers on the transmission bit-rate for each frequency subcarrier. This primarily can be achieved by utilizing the developed OGFDM features, like acceleration ability, filter orthogonality, interference avoidance, subcarrier scalability, and flexible bit loading. Consequently, the introduced OGFDM can supply lower latency, better BW efficiency, higher robustness, wider sharing, and more resilient bit loading than the current waveform. To highlight the main advantages of the proposed OGFDM, the system performance is compared with the initial design of the multicarrier OGFDM side by side with the 5G waveform generalized frequency division multiplexing (GFDM). The experimented results show that by moving from both the conventional OGFDM and GFDM with 4 GHz to the advanced OGFDM with 6 GHz, the gained channel capacity is improved. Because of the efficient use of Hilbert filters and improved rate of sampling acceleration, the upgraded system can gain about 3 dB and 1.5 dB increments in relative to the OGFDM and GFDM respectively. This, as a result, can maximize mainly the overall channel capacity of the enhanced OGFDM, which in turn can raise the bit-rate of each user in the mobile network. In addition, by employing the OGFDM with the dual oversampling, the achieved channel capacity in worst transmission condition is increased to around six and twelve times relative to the OGFDM and GFDM with the normal oversampling. Furthermore, applying the promoted OGFDM with the adaptive modulation comes up with maximizing the overall channel capacity up to around 1.66 dB and 3.32 dB compared to the initial OGFDM and GFDM respectively. A MATLAB simulation is applied to evaluate the transmission performance in terms of the channel capacity and the bit error rate (BER) in an electrical back-to-back wireless transmission system.

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GFDM Interference Mitigation Without Noise Enhancement

Cited by 26 publications

References 10 publications

Pilot Placement Schemes for Channel Estimation of Proposed 5G-GFDM System

Pilot Placement Schemes for Channel Estimation of Proposed 5G-GFDM System

GFDM frame design for low-latency industrial networks

Upgrading Physical Layer of Multi-Carrier OGFDM Waveform for Improving Wireless Channel Capacity of 5G Mobile Networks and Beyond

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