Pilot power allocation for OFDM systems

In this paper, the current analysis focuses on the demodulation performance in multipath fading propagation environments, which results from the pilot power variation of pilot symbol, assisted modulation (PSAM) M-PSK in orthogonal frequency division multiplexing (OFDM) systems. The pilot-to-data power ratio (PDR) is optimized analytically. Theoretical and simulation results show that the optimum PDR is effected by the signal-to-noise ratio (SNR), Doppler frequency and interpolation size etc, and provide a suitable tool for system design.