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Process-Variation Tolerant Channel-Adaptive Virtually Zero-Margin Low-Power Wireless Receiver Systems

机译:适应过程变化的通道自适应虚拟零利润低功耗无线接收器系统

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摘要

This paper presents a process-variation tolerant, continuously channel-adaptive wireless front-end architecture and related adaptation algorithms to allow a radio-frequency transceiver to function with minimum power at all channel conditions and manufacturing process corner. Current wireless transceiver front-ends are designed for worst case channel conditions and a limited degree of post manufacture tuning is performed to compensate for process variations. It is shown how the proposed architecture can result in significant power savings over current practice without compromising system-level bit-error rate (while keeping the end-user experience unaffected). In contrast to traditional wireless circuits with limited tunability, such a zero-margin design is achieved by close loop adaptation of the wireless front-end circuits to ensure that they only consume the minimum power and deliver just enough performance (and not any more) for any channel condition. The adaptation methodology is applied to a WLAN receiver design and hardware measurement data for an adaptive receiver is presented showing a > 3 power improvement under best case channel conditions.
机译:本文提出了一种具有过程变化耐受性,连续通道自适应的无线前端架构以及相关的自适应算法,以使射频收发器在所有通道条件和制造过程的转折处以最小的功率工作。当前的无线收发器前端被设计用于最坏情况的信道条件,并且执行有限程度的制造后调整以补偿工艺变化。展示了所提出的体系结构如何在不影响系统级误码率的情况下(与最终实践不受影响的情况下)在当前实践中显着节省功率。与可调性受限的传统无线电路相比,这种零裕度设计是通过无线前端电路的闭环自适应来实现的,以确保它们仅消耗最小的功率并提供足够的性能(而不再具有)任何渠道状况。自适应方法已应用于WLAN接收器设计,并给出了自适应接收器的硬件测量数据,该数据显示在最佳情况下的信道条件下功率提高了> 3。

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