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Serially Concatenated Multilevel Coded Modulation  

Bae, Sang-Jae (School of Electronic and Electrical Engineering, Kyungpook National University)
Lee, Sang-Hoon (School of Electronic and Electrical Engineering, Kyungpook National University)
Joo Eon-Kyeong (School of Electronic and Electrical Engineering, Kyungpook National University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.39, no.11, 2002 , pp. 12-20 More about this Journal
Abstract
Serially concatenated multilevel coded modulation (SCMCM) is proposed in this paper. It is a combined scheme of the outer convolutional code and inner multilevel coded modulation (MCM) which is bandwidth-efficient coded modulation. And the performance of three schemes for decoding of the proposed SCMCM is compared and analyzed. As results of simulations, global iterative decoding with inner and outer code should be performed to improve the error performance as the number of iterations is increased. And the scheme which uses both local iterative multistage decoding in MCM and global iterative decoding with inner and outer code, called Scheme 3 in this paper, shows the best error performance among the three schemes considered in this paper. In addition, performance difference between this scheme and the others is increased as the signal to noise ratio (SNR) is increased. Therefore, Scheme 3 is considered to be the proper decoding scheme of SCMCM.
Keywords
SCMCM; MCM; bandwidth-efficeient coded modulation; global iterative decoding; local iterative multistage decoding;
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