Detection Opportunities for CDM-OFDMA

Author

Raulefs, Ronald ; Dammann, Armin ; Ayaz, Serkan

Author_Institution

Inst. of Commun. & Navigation, German Aerosp. Center (DLR), Oberpfaffenhofen

Volume

5

fYear

2006

fDate

7-10 May 2006

Firstpage

2114

Lastpage

2118

Abstract

In this paper, we present a synchronous code division multiplexing (CDM) scheme that uses orthogonal frequency division multiple access (OFDMA) to separate different users. The CDM component multiplies each data symbol with a different phase shift. This results in unique chips, which represent a new alphabet. The potential of this alphabet is shown by EXIT-charts. Therefore, the receiver can choose between an improved interference cancellation scheme as well as an iterative decoder. Latter does not rely on all chips of a spread sequence and increases the potential granularity of the CDM scheme

Keywords

code division multiplexing; demodulation; frequency division multiple access; interference suppression; CDM-OFDMA; EXIT-charts; detection opportunities; interference cancellation scheme; iterative decoder; orthogonal frequency division multiple access; synchronous code division multiple scheme; Channel capacity; Code division multiplexing; Codecs; Detectors; Downlink; Frequency conversion; Interference cancellation; Iterative decoding; Multiple access interference; Navigation;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2006. VTC 2006-Spring. IEEE 63rd

Conference_Location

Melbourne, Vic.

ISSN

1550-2252

Print_ISBN

0-7803-9391-0

Electronic_ISBN

1550-2252

Type

conf

DOI

10.1109/VETECS.2006.1683229

Filename

1683229