Title :
Optimization of pilot placement in adaptive M-PSK modulation systems in Rayleigh fading channel
Author :
Primak, Serguei ; Almustafa, Khaled
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Western Ontario, London, ON, Canada
Abstract :
Performance of constant-power variable-rate M-PSK schemes over Rayleigh fading channels in the presence of Imperfect Channel State Information is investigated for a single frame decoding and prediction. Negligible time delay between channel estimation and signal set adaptation was assumed. The optimization of frame duration, conditioned on the target BER is investigated. An analytical expression for the desired threshold is derived. Its dépendance on the targeted BER and quality of the feedback is investigated.
Keywords :
Rayleigh channels; adaptive modulation; channel estimation; decoding; error statistics; phase shift keying; BER; Rayleigh fading channel; adaptive M-PSK modulation system; bit error rate; channel estimation; frame duration; imperfect channel state information; multiple phase shift keying; pilot placement; signal set adaptation; single frame decoding; variable-rate M-PSK scheme; Bit error rate; Channel estimation; Fading; Modulation; Receivers; Signal to noise ratio; Transmitters; Adaptive Modulation; Channel Capacity; Channel Estimation; Imperfect CSI and M-PSK Modulation;
Conference_Titel :
GCC Conference & Exhibition, 2009 5th IEEE
Conference_Location :
Kuwait City
Print_ISBN :
978-1-4244-3885-3
DOI :
10.1109/IEEEGCC.2009.5734249
