On increasing OFDM method frequency efficiency opportunity

Author

Bank, Michael

Author_Institution

Holon Acad. Technol. Inst., Israel

Volume

50

Issue

2

fYear

2004

fDate

6/1/2004 12:00:00 AM

Firstpage

165

Lastpage

171

Abstract

OFDM-SFN or OFDM-MFN methods are used in DVB-T and DAB systems. In the case of MFN there are problems with frequency efficiency. This article presents a new multiplexing technique, which combines OFDM and CDMA features. It solves some problems of these methods. This new method solves some of the problems of OFDM-MFN and other wireless OFDMA systems, namely increasing frequency efficiency.

Keywords

OFDM modulation; Walsh functions; cellular radio; code division multiple access; digital audio broadcasting; digital video broadcasting; CDMA features; DAB systems; DVB-T systems; MFN frequency efficiency; OFDM features; OFDM method frequency efficiency; OFDM-MFN methods; OFDM-SFN methods; Walsh functions; cellular system; multi frequency network; multiplexing technique; single frequency network; wireless OFDMA systems; Digital video broadcasting; Diversity methods; Doppler shift; Frequency division multiaccess; Helium; Multiaccess communication; OFDM; Reflection; Signal to noise ratio; Time division multiple access; CDMA; FBS; OFDM; OFDMA; cellular system; frequency efficiency; walsh functions;

fLanguage

English

Journal_Title

Broadcasting, IEEE Transactions on

Publisher

ieee

ISSN

0018-9316

Type

jour

DOI

10.1109/TBC.2004.828752

Filename

1304951