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Performance comparison of hard and soft-decision turbo coded OFDM systems

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2 Author(s)
Savitha, H.M. ; Department of Electronics and Communication Engg., St. Joseph Engineering College, Mangalore, Karnataka, India ; Kulkarni, M.

This paper compares the performance of hard and soft-decision turbo coded Orthogonal Frequency Division Multiplexing systems with Quadrature Phase Shift Keying (QPSK) and 16-Quadrature Amplitude Modulation (16-QAM). The results show that the soft-decision method greatly outperforms the hard-decision method. Using simplified algorithm for the soft-output demapper in the 16-QAM constellation, the complexity of the demapper is greatly simplified.

Published in:

Wireless Communications, Networking and Information Security (WCNIS), 2010 IEEE International Conference on

Date of Conference:

25-27 June 2010