Initial Performance Evaluation of DFT-Spread OFDM Based SC-FDMA for UTRA LTE Uplink

Priyanto, Basuki Endah; Codina, H.; Rene, S.; Sørensen, Troels B.; Mogensen, Preben

doi:10.1109/vetecs.2007.650

Cited by 89 publications

(48 citation statements)

References 6 publications

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“…The simulation settings and parameters are following the UTRA LTE Uplink context given in Table I. For details on the link level processing we refer to [4]. During the simulation, we have the following assumption:…”

Section: Simulation Resultsmentioning

confidence: 99%

“…The performance results in our previous study [4] show that the OFDMA performance is generally better than SC-FDMA. The aim of this work is to propose a turbo equalization suitable for SC-FDMA and evaluate the performance.…”

Section: Introductionmentioning

confidence: 85%

“…This operation spreads the symbol sequence over all the subcarriers, so that each subcarrier takes information of the entire symbol sequence. Spread symbol sequences are mapped to the assigned subcarriers (S MAP ) for transmission [4]. Finally, the data is OFDM-processed by an IFFT block and the output is given by:…”

Section: Sc-fdma Transmittermentioning

confidence: 99%

See 2 more Smart Citations

Improving SC-FDMA Performance by Turbo Equalization in UTRA LTE Uplink

Berardinelli

Priyanto

Sørensen

et al. 2008

VTC Spring 2008 - IEEE Vehicular Technology Conference

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Section: Simulation Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 85%

See 1 more Smart Citation

Improving SC-FDMA Performance by Turbo Equalization in UTRA LTE Uplink

Berardinelli

Priyanto

Sørensen

et al. 2008

VTC Spring 2008 - IEEE Vehicular Technology Conference

Self Cite

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“…At the transmitter, the procedure initiates in the time domain with the serial arranged symbols which are modulated, later on this information is set into parallel and fed to the N-point fast Fourier transform (FFT) which produces a set of modified complex numbers in the frequency domain. At this point the information has been spread out over the N subcarriers, subsequently a mapping procedure takes place in order to map one-on-one the modified complex numbers to a set of N contiguous subcarriers (zeros are placed into the M-N unused subcarriers), just after the Mpoint inverse fast Fourier transform is applied for transforming the information to the time domain, which is converted back to serial form for adding a cyclic prefix, letting this way the baseband SC-FDMA symbol ready to be transmitted through the channel [24,25].…”

Section: The Lte Uplink Systemmentioning

confidence: 99%

An opportunistic cognitive radio communication through the exploitation of the small-scale fading mechanisms of the LTE mobile channel

Medina-Acosta

Delgado-Penin

Haneda

2013

J Wireless Com Network

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In recent years, the cognitive radio technology has attracted the attention of all the players in the telecommunication field (i.e., researchers, industry, service providers, and regulatory agencies) as a way of facing the spectrum scarcity. In this regard, and after having reviewed the vast activity linked to this concept it is quite easy to realize that the spectrum sensing task turns out to be the keystone of this technology. However, nowadays it is still unclear which is (are) going to be the globally recommended technique(s) for carrying out this procedure. So, and aiming at finding an alternative to the technical impediments behind the spectrum sensing task, this research work proposes that the advanced knowledge that is already being collected at the modern primary networks be used in benefit of the cognitive radios. Here, the 3GPP LTE network has been adopted as the primary system providing the information that the cognitive radio transceiver will be using for co-transmitting opportunistically (i.e., at specific moments) through the licensed radio resources, being the secondary access based on a novel model which proposes to overlay the secondary transmission whenever extreme channel conditions be found in the radio link of a particular primary user.

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“…The use of frequency domain linear equalization (FD-LE) [7] is a common assumption in the SC-FDMA based LTE uplink systems due to its simplicity, and is also the focus of our work. We show that the conventional frequency domain equalizers are suboptimal for improper signals, for which the performance can be greatly improved by taking into consideration the complete second order description of the received signal in frequency domain.…”

Section: Introductionmentioning

confidence: 99%