Time-limited waveforms for OFDM-CDMA in a multipath fading channel

Author

Drakul, Spase L.

Author_Institution

Dipt. di Elettronica, Politecnico di Torino, Italy

fYear

1997

fDate

29 Jun-4 Jul 1997

Firstpage

121

Abstract

We analyzed the bit error performance of an OFDM-CDMA multicarrier transmission system with waveform shaping. It is shown that such a data shaping decreases the side lobes of the transmitted signal. Classical OFDM systems based on DFT make use of a guard interval in order to improve the performance in multipath fading channels. A part of the loss due to the power transmitted during the guard interval can be compensated efficiently by a waveform shaping which is proposed. The performance of the OFDM-CDMA systems using different shaping waveforms are presented

Keywords

code division multiple access; coding errors; discrete Fourier transforms; error statistics; fading; frequency division multiplexing; land mobile radio; multipath channels; quadrature amplitude modulation; spread spectrum communication; BER; DFT; OFDM-CDMA; QAM; bit error performance; data shaping; guard interval; mobile radio systems; multicarrier transmission system; multipath fading channel; side lobes; spreading codes; time-limited waveforms; transmitted signal; waveform shaping; Bandwidth; Error analysis; Fading; Multiaccess communication; OFDM; Performance analysis; Performance loss; Prototypes; Pulse modulation; Quadrature amplitude modulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Information Theory. 1997. Proceedings., 1997 IEEE International Symposium on

Conference_Location

Ulm

Print_ISBN

0-7803-3956-8

Type

conf

DOI

10.1109/ISIT.1997.613036

Filename

613036