Title :
A novel IQ imbalance compensation scheme for the reception of OFDM signals
Author :
Schuchert, Andreas ; Hasholzner, Ralph ; Antoine, Patrick
Author_Institution :
Motorola SPS, Munich, Germany
fDate :
8/1/2001 12:00:00 AM
Abstract :
Digital receivers still employ analog components in the demodulation process causing amplitude and phase imbalances between the I and Q branches. This article describes a novel digital compensation scheme for orthogonal frequency division multiplex (OFDM) receivers based on adaptive frequency domain filtering to remove the IQ imbalance effects
Keywords :
FIR filters; OFDM modulation; adaptive equalisers; adaptive filters; adaptive signal processing; demodulation; digital video broadcasting; filtering theory; television receivers; television reception; video signal processing; 2-tap FIR filter structure; DVB-T; OFDM receivers; OFDM signals reception; Q imbalance compensation; adaptive coefficient adjustment; adaptive frequency domain equalization; adaptive frequency domain filtering; amplitude imbalance; analog IQ downconverters; analog components; demodulation; digital TV receivers; digital compensation; digital video broadcast-terrestrial; orthogonal frequency division multiplexing; phase imbalance; Adaptive filters; Digital video broadcasting; Filtering; Frequency division multiplexing; Frequency domain analysis; OFDM; SAW filters; Signal processing; Transfer functions; Tuners;
Journal_Title :
Consumer Electronics, IEEE Transactions on
