On the effects of carrier frequency offset on cyclic prefix based OFDM and filter bank based multicarrier systems

Bai, Qing; Nossek, Josef A.

doi:10.1109/spawc.2010.5670999

Cited by 25 publications

(17 citation statements)

References 7 publications

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“…A straightforward (and common) way to address the scaling ambiguity is through the transmission of a short training preamble. 4 At convergence, and once the complex scaling ambiguity has been resolved, the transmitted symbols can be detected as…”

Section: System Modelmentioning

confidence: 99%

Joint channel estimation / data detection in MIMO-FBMC/OQAM systems — A tensor-based approach

Kofidis

Chatzichristos

Almeida

2017

2017 25th European Signal Processing Conference (EUSIPCO)

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Abstract-Filter bank-based multicarrier (FBMC) systems are currently being considered as a prevalent candidate for replacing the long established cyclic prefix (CP)-based orthogonal frequency division multiplexing (CP-OFDM) in the physical layer of next generation communications systems. In particular, FBMC/OQAM has received increasing attention due to, among other features, its potential for maximum spectral efficiency. It suffers, however, from an intrinsic self-interference effect, which complicates signal processing tasks at the receiver, including synchronization, channel estimation and equalization. In a multiple-input multiple-output (MIMO) configuration, the multi-antenna interference has also to be taken into account. (Semi-)blind FBMC/OQAM receivers have been little studied so far and mainly for single-antenna systems. The problem of joint channel estimation and data detection in a MIMO-FBMC/OQAM system, given limited or no training information, is studied in this paper through a tensor-based approach in the light of the success of such techniques in OFDM applications. Simulationbased comparisons with CP-OFDM are included, for realistic transmission models.

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Section: System Modelmentioning

confidence: 99%

Joint channel estimation / data detection in MIMO-FBMC/OQAM systems — A tensor-based approach

Kofidis

Chatzichristos

Almeida

2017

2017 25th European Signal Processing Conference (EUSIPCO)

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“…The effects of CFO on CP-OFDM systems have been extensively studied in the literature, e.g., [3]. In our recent work [5], we have analyzed the effects of CFO on FBMC systems, where the root-raised cosine (RRC) filter with roll-off factor 1 is chosen to be the prototype filter. In this section we first summarize the results on CFO induced interference in both systems, and then discuss the method to compensate for this degradation in the resource allocation procedure.…”

Section: Compensation For Interference Induced By Cfomentioning

confidence: 99%

Scheduling and resource allocation in OFDM and FBMC systems: An interactive approach and performance comparison

Bai

Passas

Nossek

2010

2010 European Wireless Conference (EW)

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In modern wireless communication systems, scheduling and resource allocation are two closely related tasks of the medium access control (MAC) and physical (PHY) layers respectively. In this paper, we present a separate yet interactive design of the two functional modules, where the scheduler prioritizes data packets from different service flows according to their traffic characteristics and feedback from the resource allocator, while the resource allocator performs quality of service (QoS) constrained transmit power minimization given lists of prioritized packets from the scheduler. The simulation results of applying the model to both cyclic prefix based OFDM (CP-OFDM) and the filter bank based multicarrier (FBMC) systems demonstrate the superior performance of the latter.

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“…Apart from its main advantage of significantly reduced out-ofband emission in comparison to the widely used orthogonal frequency division multiplexing (OFDM) system [1], [2], [6]; another major benefit is ease in the implementation of multi-user (MU) access in the uplink transmission since the strict synchronization requirements for OFDM systems can be relaxed in FBMC systems [7], [8]. In addition, it has been reported in [9] that FBMC system is more robust to carrier frequency offset (CFO) [10], which is critical for this waveform when employed in high mobility environments and multi-cell cooperation scenarios [7], [11].…”

Section: Introductionmentioning

confidence: 99%

FBMC System: An Insight into Doubly Dispersive Channel Impact

Zhang

Xiao

Zafar

et al. 2016

IEEE Trans. Veh. Technol.

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Abstract-It has been claimed that the filter bank multicarrier (FBMC) systems suffer from negligible performance loss caused by moderate dispersive channels in the absence of guard time protection between symbols. However, a theoretical and systematic explanation/analysis for the statement is missing in the literature to date. In this paper, based on one-tap minimum mean square error (MMSE) and zero-forcing (ZF) channel equalizations, the impact of doubly dispersive channel on the performance of FBMC systems is analyzed in terms of mean square error (MSE) of received symbols. Based on this analytical framework, we prove that the circular convolution property between symbols and the corresponding channel coefficients in the frequency domain holds loosely with a set of inaccuracies. To facilitate analysis, we first model the FBMC system in a vector/matrix form and derive the estimated symbols as a sum of desired signal, noise, inter-symbol interference (ISI), inter-carrier interference (ICI), inter-block interference (IBI) and estimation bias in the MMSE equalizer. Those terms are derived one-by-one and expressed as a function of channel parameters. The numerical results reveal that in harsh channel conditions, e.g., with large Doppler spread or channel delay spread, the FBMC system performance may be severely deteriorated and error floor will occur.

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On the effects of carrier frequency offset on cyclic prefix based OFDM and filter bank based multicarrier systems

Cited by 25 publications

References 7 publications

Joint channel estimation / data detection in MIMO-FBMC/OQAM systems — A tensor-based approach

Joint channel estimation / data detection in MIMO-FBMC/OQAM systems — A tensor-based approach

Scheduling and resource allocation in OFDM and FBMC systems: An interactive approach and performance comparison

FBMC System: An Insight into Doubly Dispersive Channel Impact

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