effect of imperfect channel estimation in i/q imbalanced ofdm system
We investigate the effect of Least Squares channel estimation on an OFDM system with I/Q imbalance. A pilot structure removing the errors caused by I/Q imbalance from the channel estimate is considered. Based on these assumption, we evaluate the symbol error rate (SER) of M-QAM modulation in a Rayleigh fading channel in closed form.
imperfect channel estimation i/q imbalance ofdm symbol error rate (ser) rayleigh fading channel