IIIE 20352
INSTITUTO DE INVESTIGACIONES EN INGENIERIA ELECTRICA "ALFREDO DESAGES"
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
A Novel Post-FFT OFDM Receiver Beamforming in the Presence of Downconverter Impairments
Autor/es:
JUAN M. LACO; FERNANDO H. GREGORIO; JUAN E. COUSSEAU
Lugar:
San Carlos de Bariloche
Reunión:
Congreso; XV Reunión de Trabajo en Procesamiento de la Información y Control - RPIC 2013; 2013
Institución organizadora:
Universidad Nacional de Río Negro
Resumen:
In this paper, two non-desired effects, interference and in-phase/quadrature (I/Q) imbalance, are jointly compensated at the receiver side of an Orthogonal Frequency Division Multiplexing (OFDM) system. Taking information of the known pilots transmitted within the symbol, a Post-FFT receiver beamforming based on an NLMS algorithm is proposed to adapt the beamforming weights to reject interference signals and to compensate I/Q imbalance. Our simulation results show that the proposed Post-FFT receiver beamforming compensates I/Q imbalance without degrading the interference rejection of the array.
