Low complexity FBMC transceiver for FPGA implementation

Varga, L.; Kollár, Zsolt

doi:10.1109/radioelek.2013.6530920

Cited by 15 publications

(13 citation statements)

References 9 publications

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“…If the poles are located outside the unit circle, the system is not going to be stable, the results will be divergent. If the poles are located inside the unit circle, then the results will converge to zero [5,9].…”

Section: Theory 31 Recursive Discrete Fourier Transformmentioning

confidence: 99%

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R–DFT-based Parameter Estimation for WiGig

Csuka

Kollár

2017

Period. Polytech. Elec. Eng. Comp. Sci.

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Section: Theory 31 Recursive Discrete Fourier Transformmentioning

confidence: 99%

“…Despite the FFT being the most commonly used algorithm, some solutions, which employ two kinds of R-DFT, have already been presented for wireless communication applications: one based on the Goertzel algorithm [8] and the other one based on the observer theory [9], which is applied in this paper.…”

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confidence: 99%

R–DFT-based Parameter Estimation for WiGig

Csuka

Kollár

2017

Period. Polytech. Elec. Eng. Comp. Sci.

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“…A significant complexity reduction can be achieved by using two IFFTs and two PolyPhase (PP) filter structures as shown in [3]. Further reduction can be achieved by applying minor additional signal processing to enable the usage of only a single IFFT [4]. Other design proposals also exist for reducing the complexity of FBMC transmitter such as [5], [6] where the number of operations is reduced but it requires modifications to the existing hardware blocks, e.g.…”

Section: Introductionmentioning

confidence: 99%

FBMC Transmitters with Reduced Complexity

Kollár¹,

Al-amaireh²

2018

RADIOENGINEERING

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Filter Bank MultiCarrier (FBMC) modulation is currently considered as one of the key enablers for future 5G technologies. In the literature, two approaches are applied for the modulation of FBMC signals: Frequency Spreading (FS) and PolyPhase (PP) implementation. The complexity requirements of FBMC transmitters is considered to be one of the key research fields. In this paper various FBMC implementations are compared in terms of complexity and quantization error. An alternative design approach is suggested: the two full size Inverse Fast Fourier Transforms (IFFTs) in the standard PP can be replaced by two half size IFFTs taking advantage of real valued data processing. It is shown that the complexity of the design will be almost reduced by half. Furthermore, the proposed alternative method has the lowest quantization error among the investigated transmitter architectures, which is a key issue in hardware with low precision arithmetics.

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“…Furthermore, the paper focuses on the application of the Recursive DFT (R-DFT) for signal processing in digital communication, which is a less known structure for calculating the DFT of a signal sequence in a real-time manner [6], [7]. In contrast with the conventional DFT filter structure [8], which can be unstable due to the quantization errors, this method is robust against stability issues.…”

Section: Introductionmentioning

confidence: 99%

“…For wireless communication, especially for Orthogonal Frequency Division Multiplexing (OFDM), the most frequently used solution for spectral analysis and parameter estimation is the Fast Fourier Transform (FFT). Despite the FFT being the most commonly used algorithm, solutions employing the R-DFT have been proposed for wireless communication [7], [9].…”

Section: Introductionmentioning

confidence: 99%

Software and Hardware Solutions for Channel Estimation based on Cyclic Golay Sequences

Kollár¹,

Csuka²

2016

RADIOENGINEERING

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Abstract. This paper presents channel estimation methods based on cyclic complementary Golay sequences. First, the conventional Golay correlator is investigated, then a frequency domain approach using Discrete Fourier Transform (DFT) is provided. A complex valued fast Golay correlator is introduced which can be used for the estimation of complex valued channel impulse response. Furthermore, this paper presents the Recursive DFT (R-DFT), a signal processing architecture which may be beneficial compared to the wellknown Fast Fourier Transform (FFT). The R-DFT is able to efficiently calculate a point-by-point block spectra of the input signal, which makes it suitable for hardware implementation. Throughout the paper, the R-DFT is applied and it is

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Low complexity FBMC transceiver for FPGA implementation

Cited by 15 publications

References 9 publications

R–DFT-based Parameter Estimation for WiGig

R–DFT-based Parameter Estimation for WiGig

FBMC Transmitters with Reduced Complexity

Software and Hardware Solutions for Channel Estimation based on Cyclic Golay Sequences

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