Impact of Pulse Shaping Design on OOB Emission and Error Probability of GFDM

Kalsotra, Surbhi; Kumar, Atul; Joshi, Hem Dutt; Singh, Anurag; Dev, Kapal; Magarini, Maurizio

doi:10.1109/5gwf.2019.8911699

Cited by 11 publications

(6 citation statements)

References 12 publications

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“…This HetNet is composed of a multi-hop, Ultra-Small Cell Network (USCN) with an overlay of a Macro Base Station (MBS). The MBS provides conventional single-hop access connectivity to users on the ground in coexistence with the USCN in the same coverage area [32], [35].…”

Section: Related Workmentioning

confidence: 99%

Quality enhancement in a mm-wave multi-hop, multi-tier heterogeneous 5G network architecture

Ahmed

Zakarya

et al. 2022

Telecommun Syst

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Millimetre-wave ultra-dense high capacity networks by providing an important component of future 5G cellular systems, by providing extremely high capacity to end users. Disparate types of users coexist in such scenarios, which can make the heterogeneous network unfair in terms of allocation of resources. A mechanism is required for effective spectrum sharing and to achieve overall system fairness. In this paper, an analytical model is suggested, which is based on a two-dimensional Markov state-transition diagram, to help set the parameter values to control the issuance of resources in coexistence layouts. A restriction approach is further implemented to gain a fair balance of the Grade-of-Service for both user groups using the User Admission Control mechanism. The developed mechanism restricts access to various channel resources for users with complete choice to give a greater probability of access to different users with limited resource options. Various levels of restriction are investigated in order to offer a balanced low-blocking probability performance to both user groups in order to improve the overall network fairness. Also, the proposed approach could provide a precise level of Grade-of-Service guarantee for both the user groups if sufficient flexibility is available within the whole network. Our simulation results show that approximately 30% to 45% enhancement, in terms of grade of service (GoS), could be achieved in high to medium loads by restricting some users' flexibility.

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Section: Related Workmentioning

confidence: 99%

Quality enhancement in a mm-wave multi-hop, multi-tier heterogeneous 5G network architecture

Ahmed

Zakarya

et al. 2022

Telecommun Syst

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“…This leads to a degradation in the performance of the GFDM system [14]. As the pulse shaping filter has a clear impact on the performance of GFDM, there are many studies in the literature about this topic [28][29][30][31][32][33]. In [28], the widely used filter in GFDM systems is the raised cosine (RC) filter, which is considered a non-casual ideal filter.…”

Section: Previous Work On Gfdmmentioning

confidence: 99%

“…This type of filter has better SEP performance and lower OOB emission compared with RRC and Xia pulses, while Xia filter outperforms RRC in terms of OOB radiation. In [31], the authors introduced the results of the proposed new pulse shaping filter from the linear combination of the two pulse shapes. The proposed pulse resulted in better OOB emissions and better resistance to ISI owing to the vertical and horizontal pulse sharpness compared with RRC filter.…”

Section: Previous Work On Gfdmmentioning

confidence: 99%

Two-Step Multiuser Equalization for Hybrid mmWave Massive MIMO GFDM Systems

et al. 2020

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Although millimeter-wave (mmWave) and massive multiple input multiple output (mMIMO) can be considered as promising technologies for future mobile communications (beyond 5G or 6G), some hardware limitations limit their applicability. The hybrid analog-digital architecture has been introduced as a possible solution to avoid such issues. In this paper, we propose a two-step hybrid multi-user (MU) equalizer combined with low complexity hybrid precoder for wideband mmWave mMIMO systems, as well as a semi-analytical approach to evaluate its performance. The new digital non-orthogonal multi carrier modulation scheme generalized frequency division multiplexing (GFDM) is considered owing to its efficient performance in terms of achieving higher spectral efficiency, better control of out-of-band (OOB) emissions, and lower peak to average power ratio (PAPR) when compared with the orthogonal frequency division multiplexing (OFDM) access technique. First, a low complexity analog precoder is applied on the transmitter side. Then, at the base station (BS), the analog coefficients of the hybrid equalizer are obtained by minimizing the mean square error (MSE) between the hybrid approach and the full digital counterpart. For the digital part, zero-forcing (ZF) is used to cancel the MU interference not mitigated by the analog part. The performance results show that the performance gap of the proposed hybrid scheme to the full digital counterpart reduces as the number of radio frequency (RF) chains increases. Moreover, the theoretical curves almost overlap with the simulated ones, which show that the semi-analytical approach is quite accurate.

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“…A lot of work has been done in the area of GFDM system primarily focused on implementation of GFDM, performance improvisation using pulse shaping filters and the employment of STC‐GFDM system 6‐27 …”

Section: Introductionmentioning

confidence: 99%

“…The OOB radiations of the GFDM is lowered by 46 dB as compared to OFDM system and the BER of GFDM system is achieved similar to that of OFDM system by using Dirichlet filter. In Reference 15, a new generalized pulse shape is introduced for GFDM system and its performance in terms of symbol error rate is evaluating for the zero forcing (ZF), matched filter (MF), and MMSE receivers. In Reference 16, another pulse shaping filter is designed using quadrature programming (QP) approach which reduces the OOB radiation of the GFDM system than the conventional RC filter.…”

Section: Introductionmentioning

confidence: 99%

Performance analysis of space time coded generalized frequency division multiplexing system over generalized fading channels

Kalsotra

Singh

Joshi

2021

Trans Emerging Tel Tech

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Due to its low out-of-band emission and high spectral efficiency, the generalized frequency division multiplexing (GFDM) has been adopted as one of the most prominent waveform techniques for the 5G networks. To further combat the deep fading, the space time coding (STC) can be integrated with the GFDM system which provide high diversity gain that results into low symbol error rate at the receiver. In this article, a generalized model of space time coded GFDM system (STC-GFDM) has been proposed. More precisely, a comprehensive analytical framework to compute the average symbol error rate (ASER) is introduced, which can be used for any MIMO configuration, code rate, and arbitrary fading channel. The proposed framework has wider applicability over generalized fading channels and having more accurate exact solution along with easy to evaluate approximate solution. Thus, the proposed framework extends the horizon of performance analysis of STC-GFDM system over any fading scenario, that is not covered so far in the literature. In general, the closed from expressions of exact and approximate along with asymptotic ASER are derived for different fading channels using moment generating function (MGF) approach. Particularly, the ASER analysis has been performed analytically using derived expression over Rayleigh, TWDP, Nakagami-q, and Nakagami-m fading channels for 𝜇-ary quadrature amplitude modulation (𝜇-QAM). This analysis confirms that with the increase in transmit and receive antenna and decrease in modulation order, the ASER performance improves for all fading channels. Also, the improvement in ASER is observed as the power of specular components (ie, LOS paths) increases. Furthermore, these analytical results are validated using Monte-Carlo simulation.

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Impact of Pulse Shaping Design on OOB Emission and Error Probability of GFDM

Cited by 11 publications

References 12 publications

Quality enhancement in a mm-wave multi-hop, multi-tier heterogeneous 5G network architecture

Quality enhancement in a mm-wave multi-hop, multi-tier heterogeneous 5G network architecture

Two-Step Multiuser Equalization for Hybrid mmWave Massive MIMO GFDM Systems

Performance analysis of space time coded generalized frequency division multiplexing system over generalized fading channels

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