대한전자공학회:학술대회논문집 (Proceedings of the IEEK Conference)
- 대한전자공학회 2000년도 ITC-CSCC -1
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- Pages.140-143
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- 2000
Forward Error Control Coding in Multicarrier DS/CDMA Systems
- Lee, Ju-Mi (Department of Electrical Engineering and Computer Science Korea Advanced Institute of Science and Technology (KAIST)) ;
- Iickho Song (Department of Electrical Engineering and Computer Science Korea Advanced Institute of Science and Technology (KAIST)) ;
- Lee, Jooshik (Department of Electrical Engineering and Computer Science Korea Advanced Institute of Science and Technology (KAIST)) ;
- Park, So-Ryoung (Department of Electrical Engineering and Computer Science Korea Advanced Institute of Science and Technology (KAIST))
- 발행 : 2000.07.01
초록
In this paper, forward error control coding in multicarrier direct sequence code division multiple access (DS/CDMA) systems is considered. In order to accommodate a number of coding rates easily and make the encoder and do-coder structure simple, we use the rate compatible punctured convolutional (RCPC) code. We obtain data throughputs at several coding rates and choose the coding rate which has the highest data throughput in the SINR sense. To achieve maximum data throughput, a rate adaptive system using channel state information (the SINR estimate) is proposed. The SINR estimate is obtain by the soft decision Viterbi decoding metric. We show that the proposed rate adaptive convolutionally coded multicarrier DS/CDMA system can enhance spectral efficiency and provide frequency diversity.
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