A pilot symbol assisted compensation scheme of fading and frequency offset for 16QAM

Author

Okamoto, Eiji ; Li, Huan-Bang ; Ikegami, Tetsushi

Author_Institution

Commun. Res. Lab., Minist. of Posts & Telecommun., Ibaraki, Japan

Volume

2

fYear

1998

fDate

5-9 Oct 1998

Firstpage

921

Abstract

Pilot symbol assisted modulation (PSAM) has been proposed to compensate the distortion of the transmission lines. It is mainly targeted at fading such as Rayleigh and Rician. In one of the PSAM techniques, the compensation scheme using the fast Fourier transform (FFT) has characteristics including a simple zero insertion and precise estimation even in fast fading environments. We use this scheme to create a PSAM that compensates fading and carrier frequency offset. This proposed scheme estimates the fading and frequency offset from the received pilot symbols and compensates both of them at the same time. The scheme is introduced, and the examples of applying this to 16QAM are given through computer simulations

Keywords

Rayleigh channels; Rician channels; fast Fourier transforms; frequency estimation; land mobile radio; quadrature amplitude modulation; 16QAM; FFT; PSAM; Rayleigh fading; Rician fading; carrier frequency offset compensation; computer simulations; distortion distortion; fading compensation; fast Fourier transform; fast fading environments; frequency offset estimation; land mobile communications; pilot symbol assisted compensation; pilot symbol assisted modulation; precise estimation; received pilot symbols; transmission lines; zero insertion; Degradation; Fading; Fast Fourier transforms; Frequency estimation; Laboratories; Low pass filters; Mobile communication; Rayleigh channels; Rician channels; Transmission lines;

fLanguage

English

Publisher

ieee

Conference_Titel

Universal Personal Communications, 1998. ICUPC '98. IEEE 1998 International Conference on

Conference_Location

Florence

ISSN

1091-8442

Print_ISBN

0-7803-5106-1

Type

conf

DOI

10.1109/ICUPC.1998.733644

Filename

733644