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mandeep singh jit singh,Kenji Tanaka,Mitsuyoshi 한국전자통신연구원 2007 ETRI Journal Vol.29 No.4
In this study, several methods to convert rain rate data for various time intervals to one-minute rates are compared. High-resolution tipping bucket precipitation records for seven locations in a tropical region are analyzed and compared using these conversion models. The Segal, Chebil, and Burgueno methods give the smallest average errors below 10% at different integration times.
Reducing the PAPR of OFDM Systems by Random Variable Transformation
Montadar Abas Taher,Mandeep Jit Singh,Mahamod Bin Ismail,Salina Abdul Samad,Mohammad Tariqul Islam 한국전자통신연구원 2013 ETRI Journal Vol.35 No.4
Peak power reduction techniques in orthogonal frequency division multiplexing (OFDM) has been an important subject for many researchers for over 20 years. In this letter, we propose a side-information-free technique that is based on the concept of random variable (RV) transformation. The suggested method transforms RVs into other RVs, aiming to reshape the constellation that will consequently produce OFDM symbols with a reduced peak-to-average power ratio. The proposed method has no limitation on the mapping type or the mapping order and has no significant effect on the bit error rate performance compared to other methods presented in the literature. Additionally, the computational complexity does not increase.