An Simplified Algorithm for PAPR Reduction in HPLC Dual Mode Communication System and Its FPGA Implementation

The integration of power line carriers and wireless communication using Orthogonal Frequency Division Multiplexing (OFDM) has become a new development direction for grid information collection systems. However, it faces the challenge of high peak-to-average power ratio (PAPR) of the transmitted signals. To address this issue, this paper proposes an simplified Partial Transmit Sequence (PTS) technique. In the calculation of rotation coefficients, V times L/2-point IFFT transforms are used instead of V times L-point IFFT transforms. This not only reduces the resource consumption caused by IFFT transform but also effectively controls the performance loss of OFDM symbol PAPR suppression within a very small range (less than 1.5%). Finally, the simplified PTS scheme is implemented on an Altera FPGA chip, resulting in a reduction of approximately 15% in resource consumption compared to the original simplified PTS technique.