Measurement and evaluation of IQ-Imbalances in DVB-T and DVB-T2-Lite OFDM modulators

Polák, Ladislav; Kron, Tomas

doi:10.1109/tsp.2017.8076048

Cited by 5 publications

(1 citation statement)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The channel equalizer, which is used on typical OFDM devices, requires adaptive interpolation algorithms associated with frequency domain multiplexed pilot signals. The referenced pilot signals can be distributed, such as the Ultra High Definition Television (UHDTV) with the Integrated Services Digital Broadcasting-Terrestrial (ISDB-T) system [ 5 ], Digital Video Broadcasting-Terrestrial (DVB-T), DVB-Second Generation Terrestrial (DVB-T2-Lite) [ 6 ], the Brazilian digital television system (Sistema Brasileiro de TV Digital-SBTVD), ISDB-T International (ISDB-T

) [ 7 , 8 , 9 ], and Long-Term Evolution (LTE-A) [ 10 ] or in sequence, as in IEEE 802.11 [ 11 , 12 ] and IEEE 802.15.3c [ 10 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

Adaptive Beamforming Applied to OFDM Systems

Sousa

Arantes

Fernandes

2018

Sensors

View full text Add to dashboard Cite

This work proposes an adaptive beamforming scheme applied to time domain, pre-FFT (Fast Fourier Transformation), Orthogonal Frequency-Division Multiplexing (OFDM) systems. This scheme improves the performance and the capacity of OFDM systems, using a supervised adaptive algorithm, with frequency domain multiplexed pilots of the OFDM system as a reference. The simplicity of the proposed structure, as well as the method used to obtain reference signals for the adaptive beamforming, are essential aspects that distinguish this paper from other publications. Details on the operation of the proposed scheme, as well as the performance curves, are presented in this manuscript. The proposal investigated here allows a significant reduction in the guard interval of the OFDM system, thereby increasing its robustness or transmission capacity.

show abstract