Title :
Generalized BER Analysis of QAM and Its Application to MRC Under Imperfect CSI and Interference in Ricean Fading Channels
Author :
López-Martínez, F. Javier ; Martos-Naya, Eduardo ; Paris, José F. ; Fernández-Plazaola, Unai
Author_Institution :
Dept. Ing. de Comun., Univ. de Malaga, Malaga, Spain
fDate :
6/1/2010 12:00:00 AM
Abstract :
A general framework for the bit error rate (BER) analysis of quadrature amplitude modulation (QAM) systems is presented. This analysis is valid for any QAM system with independent bit mapping for in-phase and quadrature components and includes previous analyses in the literature as particular cases. We use this methodology to analyze BER in maximal ratio combining (MRC) systems with channel estimation errors in Ricean fading channels with Ricean-faded interference. An exact closed-form expression for the BER is obtained in this scenario, as well as an accurate simplified expression when perfect channel estimation is assumed, for the common case of Rayleigh-faded interference.
Keywords :
Rician channels; channel estimation; diversity reception; error statistics; quadrature amplitude modulation; radiofrequency interference; BER analysis; CSI; MRC; QAM; Ricean fading channels; Ricean fading interference; bit error rate; channel estimation errors; maximal ratio combining systems; quadrature amplitude modulation; Bit error probability; Ricean fading; Ricean interference; independent mapping; maximal ratio combining (MRC); quadrature amplitude modulation (QAM);
Journal_Title :
Vehicular Technology, IEEE Transactions on
DOI :
10.1109/TVT.2010.2042740
