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首页> 外文期刊>Egyptian Informatics Journal >A novel reduced complexity optimized PTS technique for PAPR reduction in wireless OFDM systems
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A novel reduced complexity optimized PTS technique for PAPR reduction in wireless OFDM systems

机译：一种用于无线OFDM系统中降低PAPR的新颖的降低复杂度的优化PTS技术

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摘要

In this paper, we propose a novel low complexity Partial Transmit Sequence (PTS) technique employing Random phase sequence matrix (RPSM) for peak to average power ratio (PAPR) reduction in orthogonal frequency division multiplexing (OFDM) systems. The main goal of our suggested scheme is to achieve the optimum phase sequence matrix to minimize PAPR and simultaneously reduce the computational complexity by decreasing the number of Inverse Fast Fourier Transform (IFFT) operations required. Lower PAPR reduces the complexity of Digital to Analog converters (DAC) and increases the efficiency of power amplifiers. Analytical expressions for Complementary Cumulative Distribution Function (CCDF), Number of subcarriers, subblocks and Total computational complexity are derived. Simulation results match closely with the analytical results. It is demonstrated that a favorable tradeoff can be achieved between the reduction of PAPR and computational complexity. It is observed that the suggested modified PTS technique outperforms the traditional PTS (T-PTS) technique.
机译：在本文中，我们提出了一种新的低复杂度部分发送序列（PTS）技术，该技术采用随机相位序列矩阵（RPSM）来降低正交频分复用（OFDM）系统中的峰均功率比（PAPR）。我们建议的方案的主要目标是获得最佳的相序矩阵，以最大程度地降低PAPR，同时通过减少所需的快速傅里叶逆变换（IFFT）操作次数来降低计算复杂度。较低的PAPR降低了数模转换器（DAC）的复杂度，并提高了功率放大器的效率。推导了互补累积分布函数（CCDF），子载波数，子块数和总计算复杂度的解析表达式。仿真结果与分析结果非常吻合。结果表明，可以在降低PAPR和降低计算复杂度之间取得良好的折衷。可以看出，建议的改进的PTS技术优于传统的PTS（T-PTS）技术。

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