Patent ID: 7313195
Filing Date: 2007-12-25
Classification: H04L

Abstract:
1. A PAPR (peak to average power ratio) reduction method using bit reallocation, applied in a multi-carrier system, a transmitter of the multi-carrier system transmitting D-bit data at N sub-carriers over a channel, the method comprising the steps of: an initializing step, for initializing a bit loading algorithm to allocate d a PAPR computing step, for computing the PAPR of the multi-carrier system in accordance with d a comparing step, for determining if the PAPR is larger than a predetermined value A, and if yes, terminating the PAPR reduction method; and an adjusting step, for performing an adjustment of increasing Δd bits at a first selected sub-carrier and decreasing Δd bits from a second selected sub-carrier, and then executing the PAPR computing step.