Abstract
This paper presents an optimized solution to peak to average power (PAPR) reduction system for hardware mapping. One of the critical issues of systems utilizing orthogonal frequency division multiplexing (OFDM) is the high PAPR of OFDM signals. PAPR reduction schemes increases the computational complexity of high throughput systems. The proposed optimized solution uses common subexpression elimination for reducing the complexity of the OFDM system employing a PAPR reduction scheme. A precoded OFDM system has been used. Constant multiplications involved in the precoding are decomposed into shifts and additions and then common subexpression elimination involving multiple variables is employed to reduce the number of operations involved. This results in improved performance, less area coverage and reduced power consumption.
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