Design of a turbo coded OFDM/CDMA transmitter-receiver with QPSK signal mapping

Author

Ginige, Thilak ; Rajatheva, Nandana ; Ahmed, K.M.

Author_Institution

Telecommun. Program/SAT, Asian Inst. of Technol., Pathumthani, Thailand

Volume

2

fYear

2001

fDate

2001

Firstpage

786

Abstract

In this paper the performance of a turbo coded OFDM/CDMA system with QPSK signal mapping under additive white Gaussian noise (AWGN) with no fading and with multipath fading channel is analyzed and simulated. For turbo codes, the max-log-MAP algorithm is employed because it is a less complex sub-optimal algorithm for iterative decoding. Evaluation of the proposed receiver by means of computer simulation has shown substantial performance improvement for both non-fading and multipath fading environments under AWGN

Keywords

AWGN channels; OFDM modulation; code division multiple access; fading channels; iterative decoding; multipath channels; quadrature phase shift keying; radio receivers; radio transmitters; turbo codes; AWGN; QPSK signal mapping; additive white Gaussian noise; iterative decoding; max-log-MAP algorithm; multi-path fading channel; nonfading channel; turbo coded OFDM/CDMA transmitter-receiver; AWGN; Additive white noise; Fading; Iterative algorithms; Multiaccess communication; OFDM; Quadrature phase shift keying; Signal analysis; Signal mapping; Turbo codes;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2001. VTC 2001 Spring. IEEE VTS 53rd

Conference_Location

Rhodes

ISSN

1090-3038

Print_ISBN

0-7803-6728-6

Type

conf

DOI

10.1109/VETECS.2001.944486

Filename

944486