A partial-DFT-based OFDM system resistant to channel nulls

Author

Liang, Jie ; Tran, Trac D.

Author_Institution

Dept. of Electron. & Comput. Eng., Johns Hopkins Univ., Baltimore, MD, USA

Volume

1

fYear

2002

fDate

3-6 Nov. 2002

Firstpage

801

Abstract

In this paper, we present a partial DFT-based modified OFDM system that is resistant to channel nulls when both the transmitter and the receiver know the channel state information. We show the relationship between the method and filter bank precoding system as well as linearly precoded OFDM. Two optimal zero-forcing solutions are developed. The solutions inherit the fast implementation of OFDM and the superior performance of linear precoding system.

Keywords

AWGN channels; OFDM modulation; channel bank filters; discrete Fourier transforms; discrete time filters; least mean squares methods; linear codes; channel nulls; channel state information; discrete Fourier transform; filter banks; linear precoding system; optimal zero-forcing solutions; orthogonal frequency division multiplexing; partial-DFT-based OFDM; receivers; transmitters; Casting; Channel state information; DSL; Delta modulation; Equations; Filter bank; Modems; Null value; OFDM; Transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

Signals, Systems and Computers, 2002. Conference Record of the Thirty-Sixth Asilomar Conference on

Conference_Location

Pacific Grove, CA, USA

ISSN

1058-6393

Print_ISBN

0-7803-7576-9

Type

conf

DOI

10.1109/ACSSC.2002.1197289

Filename

1197289