A convolutionally coded orthogonal multicarrier DS/CDMA system in time limited asynchronous channels

Author

Kim, Yun Hee ; Lee, Ju Mi ; Song, Iickho ; Yun, Hyoung Sik ; Kim, Suk Chan

Author_Institution

Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Seoul, South Korea

Volume

2

fYear

1999

fDate

6/21/1905 12:00:00 AM

Firstpage

1075

Abstract

In this paper, we propose to transmit convolutionally coded DS waveforms over orthogonally overlapped subchannels in time limited asynchronous channels. The bit error rate of the decoder output is investigated along with simulation results under several conditions on the channel state information (CSI). It is shown that the proposed system, the convolutionally coded orthogonal multicarrier DS/CDMA system, significantly outperforms the system using frequency diversity combining. It is also shown that the proposed system has better performance than the convolutionally coded almost non-overlapped multicarrier DS/CDMA system under the condition that the information rate and total available bandwidth are the same for both systems

Keywords

Rayleigh channels; code division multiple access; convolutional codes; error statistics; BER; DS-CDMA system; Rayleigh fading channels; bit error rate; channel state information; convolutionally coded orthogonal multicarrier system; decoder output; orthogonally overlapped subchannels; time limited asynchronous channels; Bandwidth; Bit error rate; Convolutional codes; Decoding; Diversity reception; Fading; Frequency diversity; Information rates; Interference; Multiaccess communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Military Communications Conference Proceedings, 1999. MILCOM 1999. IEEE

Conference_Location

Atlantic City, NJ

Print_ISBN

0-7803-5538-5

Type

conf

DOI

10.1109/MILCOM.1999.821368

Filename

821368