OFDM-Based OOK Transceiver for Threshold-Free Detection for WUR and Ambient IoT Applications

IF 5.1 3区计算机科学 Q1 COMPUTER SCIENCE, INFORMATION SYSTEMS

IEEE Wireless Communications Letters Pub Date : 2026-01-06 DOI:10.1109/LWC.2026.3651668

Hadj Mebarek Zegrar;Salah Eddine Zegrar;Hüseyin Arslan

引用次数: 0

Abstract

The wake up radio (WuR) technology represents a significant advancement in low-power wireless communication, enabling the main radio of a low-power device to remain in deep sleep mode until it is awakened by the WuR, which, in turn, is triggered upon detecting a specific wake up signal (WuS). Despite its benefits, the detection of the WuS remains energy-inefficient in practice. This letter proposes an enhanced method for WuS generation and detection based on a least square (LS) approach. The proposed scheme employs two frequency bands to simultaneously generate an On-Off Keying (OOK) sequence and its inverted version. At the receiver side, non-coherent parallel energy detectors are utilized, allowing a simple energy comparison to recover the embedded OOK information. Theoretical bit error rate (BER) expressions are derived and analyzed, and the performance of the proposed technique is compared to that of conventional threshold-based detection method.

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用于WUR和环境物联网应用的无阈值检测的基于ofdm的OOK收发器

唤醒无线电（WuR）技术代表了低功耗无线通信的重大进步，使低功耗设备的主无线电保持深度睡眠模式，直到它被唤醒，而唤醒信号又在检测到特定的唤醒信号（wu）时被触发。尽管有其优点，但在实践中，wu的检测仍然是低效的。本文提出了一种基于最小二乘（LS）方法的wu生成和检测的增强方法。该方案采用两个频段同时生成一个开关键控（OOK）序列及其反转版本。在接收端，使用非相干并行能量检测器，允许简单的能量比较来恢复嵌入的OOK信息。推导并分析了误码率的理论表达式，并与传统的基于阈值的检测方法进行了性能比较。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Wireless Communications Letters Engineering-Electrical and Electronic Engineering

CiteScore

12.30

自引率

6.30%

发文量

481

期刊介绍： IEEE Wireless Communications Letters publishes short papers in a rapid publication cycle on advances in the state-of-the-art of wireless communications. Both theoretical contributions (including new techniques, concepts, and analyses) and practical contributions (including system experiments and prototypes, and new applications) are encouraged. This journal focuses on the physical layer and the link layer of wireless communication systems.