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A New Type of Complementary Code Keying Orthogonal frequency Division Multiplexing (CCK-OFDM) Wireless LAN Modem  

정원정 (삼성전자 통신연구소 Wibro System Lab.)
박현철 (한국정보통신대학교(ICU) 공학부)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.29, no.8C, 2004 , pp. 1069-1075 More about this Journal
Abstract
In this paper, we show the equivalence between complementary code keying (CCK) codeword and coset of the first order Reed-Muller (RM) code with variables of three. The CCK codewords are Golay sequences which have peak-to-average power ratio (PAPR) of two at most and can correct one error. We propose a CCK-orthogonal frequency division multiplexing (OFDM) modem to reduce PAPR. Also, we present the performance improvement techniques by increasing the variables of four to correct three errors and reduce PAPR at least 9㏈ with this system. Although, two Fast Hadamard Transform (FHT) blocks of size 8 64 are required at the receiver, we reduce the complexity by using FHT blocks of size 8 64 and 2 4 without deteriorating the performance. We generalize our results that we may increase the variables of RM code to enhance the error correcting and PAPR reduction capabilities without increasing receiver's complexity.
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