Codes with Low Peak-to-Average Power Ratio for Multi-Code CDMA

In this paper, codes which reduce the peak-to-average power ratio (PAPR) in multi-code code division multiple access (MC-CDMA) communication systems are studied. An approach to construct codes of length 2^m with low PAPR for both odd and even m using the Rudin-Shapiro construction is derived. We also propose a new coding approach to achieve the constant amplitude transmission of codeword length 2^m for both even m as well as odd m.