Title :
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
fDate :
6/21/1905 12:00:00 AM
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;
Conference_Titel :
Military Communications Conference Proceedings, 1999. MILCOM 1999. IEEE
Conference_Location :
Atlantic City, NJ
Print_ISBN :
0-7803-5538-5
DOI :
10.1109/MILCOM.1999.821368
