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Signal to Clipping noise Ratio (SCR) and active-set methods are two existing methods for Peak-to-Average Power Ratio (PAPR) reduction based on tone reservation. In this paper, the computational complexities of these two methods are analyzed and simulation is done for comparing their PAPR-reducing performance. The simulation results show that active-set method requires less computational complexity than that of SCR method while they achieve similar PAPR reduction performance. Multicarrier modulation has become a key technology of communication systems and is currently used in many wired and wireless applications, including Digital Video Broadcasting (DVB) and Digital Audio Broadcasting (DAB) in Europe, Digital Subscriber Lines (DSL) using multitone, as well as the most recent generation of wireless LANs.
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