Title :
Error Probability of DF Relaying with Pilot-Assisted Channel Estimation over Time-Varying Fading Channels
Author :
Ikki, Salama S. ; Al-Dharrab, Suhail ; Uysal, Murat
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Waterloo, Waterloo, ON, Canada
Abstract :
In this paper, we investigate the error rate performance of a cooperative network with adaptive decode-and-forward (DF) relaying over time-selective frequency-flat Rayleigh-fading channels. We assume pilot-symbol-assisted modulation (PSAM) for the estimation of time-varying fading channel coefficients. For the system under consideration, we derive an exact closed-form expression for the average bit/symbol error rate, which is further validated through Monte Carlo simulations. Such closed-form solutions are highly desirable because they allow for rapid and efficient performance evaluation. Through the derived expression, we also demonstrate the effect of various system parameters such as the number of relays, Doppler values, and filter length on system performance.
Keywords :
Doppler effect; Monte Carlo methods; Rayleigh channels; channel estimation; cooperative communication; decode and forward communication; error statistics; filtering theory; modulation; DF relaying; Doppler value; Monte Carlo simulation; adaptive decode-and-forward relaying; bit error rate; cooperative network; error probability; error rate performance; filter length; pilot-assisted channel estimation; pilot-symbol-assisted modulation; symbol error rate; system parameter; time-selective frequency-flat Rayleigh-fading channel; time-varying fading channel coefficient; Bit error rate; Channel estimation; Doppler effect; Error probability; Fading; Relays; Signal to noise ratio; Channel estimation; cooperative diversity; decode and forward (DF); error probability; pilot-symbol-assisted modulation (PSAM); time-selective fading channels;
Journal_Title :
Vehicular Technology, IEEE Transactions on
DOI :
10.1109/TVT.2011.2163536
