arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2104.12460cs.ITmath.IT
收藏

可重构自适应信道检测

Reconfigurable Adaptive Channel Sensing

Manuj Mukherjee, Aslan Tchamkerten, Chadi Jabbour

摘要:

通道感测包括不时探测通道以检查它是否处于活动状态(例如,由于传入消息)。当通信是稀疏的,信息在很长一段时间内发送一次时,信道感知成为能量消耗的重要来源。如何可靠地检测消息,同时最大限度地减少接收方的能耗?本文通过一种称为AdaSense的可重构方案来解决这个问题,该方案利用了接收机噪声系数(即,接收机增加了噪声)和接收机功耗;较高的功率通常转化为较少噪声的信道观测。AdaSense以低功耗、低可靠性模式开始,并根据一些信道观察结果做出第一个尝试性决定。如果消息被声明,则它切换到高功率高可靠性模式以确认该决定,否则它在第二阶段的整个持续时间内休眠。与诸如BMAC协议等突出的检测方案相比,AdaSense提供了相对能量增益,随着通信变得稀疏,该相对能量增益在小概率的虚警机制中无限增长。在非渐近制度的能量增益是30%至75%的通信场景中通常发现的唤醒接收器的上下文中。

英文摘要:

Channel sensing consists of probing the channel from time to time to check whether or not it is active - say, because of an incoming message. When communication is sparse with information being sent once in a long while, channel sensing becomes a significant source of energy consumption. How to reliably detect messages while minimizing the receiver energy consumption? This paper addresses this problem through a reconfigurable scheme, referred to as AdaSense, which exploits the dependency between the receiver noise figure (i.e., the receiver added noise) and the receiver power consumption; a higher power typically translates into less noisy channel observations. AdaSense begins in a low power low reliability mode and makes a first tentative decision based on a few channel observations. If a message is declared, it switches to a high power high reliability mode to confirm the decision, else it sleeps for the entire duration of the second phase. Compared to prominent detection schemes such as the BMAC protocol, AdaSense provides relative energy gains that grow unbounded in the small probability of false-alarm regime, as communication gets sparser. In the non-asymptotic regime energy gains are 30% to 75% for communication scenarios typically found in the context of wake-up receivers.

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。

↑