Title :
Decision-directed compensation of phase noise and residual frequency offset in a space-Time OFDM receiver
Author :
Nikitopoulos, Konstantinos ; Polydoros, Andreas
Author_Institution :
Dept. of Phys., Nat. & Kapodistrian Univ. of Athens, Greece
Abstract :
This letter addresses the simultaneous perturbation of a space-time (ST) OFDM receiver by a PHase Noise (PHN) process plus a fixed but unknown residual frequency offset (RFO), and then proceeds to propose two decision-directed schemes for their joint compensation. Reduced-complexity modifications thereof are also considered, and the corresponding symbol error rate (SER) performance loss is shown to be less than 0.5 dB.
Keywords :
OFDM modulation; discrete Fourier transforms; error statistics; phase noise; space-time codes; IDFT; complexity modifications; decision-directed compensation; phase noise; residual frequency offset; space-time OFDM receiver; symbol error rate; Degradation; Discrete Fourier transforms; Frequency estimation; Frequency synchronization; MIMO; OFDM; Oscillators; Phase noise; Receiving antennas; Transmitting antennas; Frequency offset; OFDM; PHN; phase noise;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2004.833803
