Title :
Pilot power allocation for OFDM systems
Author :
Chen, Jiming ; Tang, Youxi ; Li, Shaoqian
Author_Institution :
The Nat. Key Lab. of Commun., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
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.
Keywords :
OFDM modulation; demodulation; fading channels; multipath channels; optimisation; phase shift keying; radio networks; Doppler frequency; M-ary phase shift keying; OFDM systems; demodulation performance; interpolation size; multipath fading propagation environments; optimization; orthogonal frequency division multiplexing; pilot power allocation; pilot symbol assisted modulation; pilot-to-data power ratio; signal-to-noise ratio; Bit error rate; Channel estimation; Data communication; Demodulation; Fading; Multiaccess communication; Numerical analysis; OFDM modulation; Performance analysis; Phase shift keying;
Conference_Titel :
Vehicular Technology Conference, 2003. VTC 2003-Spring. The 57th IEEE Semiannual
Print_ISBN :
0-7803-7757-5
DOI :
10.1109/VETECS.2003.1207834
