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arXiv 2511.03465eess.SP
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一种改进的脉冲与设计框架,可将OFDM频谱整形技术的复杂度减半

A Modified Pulse and Design Framework to Halve the Complexity of OFDM Spectral Shaping Techniques

Javier Giménez, José A. Cortés, Francisco Javier Cañete, Eduardo Martos-Naya, Luis Díez

AI总结:

本文提出一种改进的OFDM脉冲与设计框架,通过修改传统波形,使预编码、AIC等频谱整形技术的优化系数和实现乘积数量最多降低50%,从而显著减少带外发射抑制的实现成本。

摘要:

正交频分复用(OFDM)是一种广泛使用的调制方式,但存在较高的带外发射(OOBE)问题。诸如预编码、主动干扰消除(AIC)和时域方法等频谱整形策略在降低OOBE方面有效,但会带来优化过程和实时实现成本,这些成本可能相当可观。本文提出对传统OFDM波形进行一种改进,旨在降低许多现有最先进频谱整形技术相关的成本,并为希望从同样降低中受益的未来工作建立一个框架。该方法可将优化涉及的系数数量及其实现中的乘积数量最多减少50%。

英文摘要:

Orthogonal frequency division multiplexing (OFDM) is a widespread modulation but suffers from high out-of-band emissions (OOBE). Spectral shaping strategies such as precoding, active interference cancellation (AIC) and time-domain methods are effective at reducing the OOBE but entail optimization procedures and real-time implementation costs which might be considerable. This letter proposes a modification of the conventional OFDM waveform aimed at reducing the cost associated to many of the state-of-theart spectral shaping techniques and sets a framework for future works that want to benefit from the same reduction. This approach may reduce both the number of coefficients involved in the optimization and the number of products of its implementation by up to 50%.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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