Title :
Effects of carrier phase error on EGC receivers in correlated Nakagami-m fading
Author :
Sagias, Nikos C. ; Karagiannidis, George K.
Author_Institution :
Dept. of Phys., Athens Univ., Greece
fDate :
7/1/2005 12:00:00 AM
Abstract :
The effects of incoherently combining on dual-branch equal-gain combining (EGC) receivers in the presence of correlated, but not necessarily identical, Nakagami-m fading and additive white Gaussian noise are studied. Novel closed-form expressions for the moments of the output signal-to-noise ratio (SNR) are derived. Based on these expressions, the average output SNR and the amount of fading are obtained in closed-form. Moreover, the outage and the average bit error probability for binary and quadrature phase-shift keying are also studied using the moments-based approach. Numerical and computer simulation results clearly depict the effect of the carrier phase error, correlation coefficient, and fading severity on the EGC performance. An interesting finding is that higher values of the correlation coefficient results to lower irreducible error floors.
Keywords :
AWGN channels; diversity reception; error statistics; fading channels; numerical analysis; phase locked loops; quadrature phase shift keying; radio receivers; BEP; EGC; Nakagami-m fading channel; PLL; additive white Gaussian noise; binary phase-shift keying; bit error probability; carrier phase error; closed-form expression; dual-branch equal-gain combining receivers; phase-locked loop; quadrature phase-shift keying; AWGN; Additive white noise; Computer errors; Computer simulation; Diversity reception; Error probability; Fading; Phase estimation; Phase shift keying; Signal to noise ratio;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2005.07006
