Title :
Rayleigh fading compensation for QAM by using FFT
Author :
Okamoto, Eiji ; Li, Huan-Bang ; Ikegami, Tetsushi
Author_Institution :
Commun. Res. Lab., Ibaraki, Japan
Abstract :
Pilot symbol assisted modulation (PSAM) has been proposed to overcome Rayleigh fading. However, as the fading rate becomes more rapid, it is difficult to provide an exact interpolation with conventional PSAM. To compensate for fast Rayleigh fading, a PSAM which calculates in the frequency domain rather than the time domain as in conventional PSAM is proposed. This PSAM provides an exact estimate in fast Rayleigh fading environments
Keywords :
Rayleigh channels; fading; fast Fourier transforms; land mobile radio; quadrature amplitude modulation; 16QAM; BER performance; FFT; PSAM; Rayleigh fading compensation; exact estimate; fading rate; fast Rayleigh fading environments; frequency domain; interpolation; land mobile communications; pilot symbol assisted modulation; Degradation; Discrete Fourier transforms; Equations; Fading; Fast Fourier transforms; Frequency domain analysis; Interpolation; Mobile communication; Quadrature amplitude modulation; Rayleigh channels;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 1996. PIMRC'96., Seventh IEEE International Symposium on
Conference_Location :
Taipei
Print_ISBN :
0-7803-3692-5
DOI :
10.1109/PIMRC.1996.568448
