Efficient pilot patterns for channel estimation in OFDM systems over HF channels

Author

Garcia, M. Julia Fernandez-Getino ; Páez-Borrallo, José M. ; Zazo, Santiago

Author_Institution

Dept. de Senales Sistemas y Radiocommun., Univ. Politecnica de Madrid, Spain

Volume

4

fYear

1999

fDate

1999

Firstpage

2193

Abstract

In this paper, the distribution of pilot symbols in the time-frequency lattice of a multicarrier system for HF communications has been analysed. The pilot density of an OFDM modem based on the HFDL standard can be reduced, so the data rate can be about 3600 bit/s. An hexagonal pilot pattern has been proposed and compared with rectangular geometries. Hexagonal distribution of the pilots is optimum in terms of sampling efficiency and it provides better performance in terms of BER

Keywords

OFDM modulation; data communication; error statistics; estimation theory; mobile radio; optimisation; packet radio networks; signal sampling; time-frequency analysis; BER; HF channels; HFDL standard; OFDM modem; OFDM systems; channel estimation; hexagonal distribution; hexagonal pilot pattern; multicarrier system; optimisation; performance; pilot density; sampling efficiency; time-frequency lattice; Bit error rate; Channel estimation; Fading; Geometry; Hafnium; Lattices; Modems; OFDM; Sampling methods; Time frequency analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 1999. VTC 1999 - Fall. IEEE VTS 50th

Conference_Location

Amsterdam

ISSN

1090-3038

Print_ISBN

0-7803-5435-4

Type

conf

DOI

10.1109/VETECF.1999.797327

Filename

797327