A quadratic programming approach in pulse shaping filter design to reducing PAPR in OFDM systems
A quadratic programming approach in pulse shaping filter design to reducing PAPR in OFDM systems
复制标题
脉冲整形滤波器设计中用于降低 OFDM 系统 PAPR 的二次规划方法
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
Z. Zang
中科院分区：
文献类型：
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作者：
R. Reine;Z. Zang
在无线通信中实现正交频分复用（OFDM）系统面临的挑战是发送信号经常表现出较高的峰均功率比（PAPR）。脉冲整形技术是一种以最小的实现复杂度增加来降低峰均比的有效方法。本文提出了一种FIR脉冲成形滤波器的设计，它被配制成一个二次优化问题，以最大限度地减少所需的目标响应和设计的滤波器在阻带之间的加权均方误差，同时满足规定的通带峰值增益约束。数值例子说明了优化的FIR脉冲成形滤波器的有效性。
The challenge of implementing Orthogonal Frequency Division Multiplexing (OFDM) system in wireless communication is that the transmitted signal often exhibits a high peak-to-average power ratio (PAPR). The pulse shaping technique is an effective way to reduce PAPR with minimal increase of implementation complexity. This paper proposes a design of FIR pulse shaping filters which is formulated as a quadratic optimisation problem to minimise the weighted mean squared error between the desired target response and the designed filter in the stopband whilst satisfying prescribed peak gain constraints in the passband. The effectiveness of the optimised FIR pulse shaping filter is illustrated by numerical examples.