An efficient synchronization scheme for digital UWB communication systems for biomedical applications

2008 IEEE Biomedical Circuits and Systems Conference Pub Date : 2008-11-01 DOI:10.1109/BIOCAS.2008.4696862

M.C. Munshi, Jinhua Jiang, Yan Xin, T. Lande, Y. Lian

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引用次数: 3

Abstract

Wireless biomedical applications require low power operations for long, uninterrupted durations of use. In order to harness the low power characteristics of Ultra Wideband (UWB) systems, issues involving the synchronization of extremely short pulses have to be resolved as they surface as major bottlenecks of the design of such systems. The situation is particularly adverse in short range communication systems operating in dense indoor environments as employed in the biomedical field. In this paper, we present a simple power saving synchronization scheme extended upon a previously implemented spatial rake receiver structure. This scheme, which uses neither high speed ADCs nor conventional analog correlators, allows for significant reduction in receiver power consumption while achieving quick acquisition in the preamble stage under moderate signal to noise ratio (SNR) conditions, by exploiting favorable cross correlation properties of known Barker sequences. This is illustrated by appropriately adjusting the threshold value of the discrete correlation between received data and chosen sequences.

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一种用于生物医学应用的数字超宽带通信系统的有效同步方案

无线生物医学应用需要低功耗操作，长时间不间断使用。为了利用超宽带(UWB)系统的低功率特性，必须解决涉及极短脉冲同步的问题，因为它们是此类系统设计的主要瓶颈。在生物医学领域使用的在密集室内环境中运行的短程通信系统中，这种情况尤其不利。在本文中，我们提出了一种简单的节能同步方案，扩展了先前实现的空间rake接收器结构。该方案既不使用高速adc，也不使用传统的模拟相关器，通过利用已知巴克序列的良好互相关特性，在中等信噪比(SNR)条件下实现前置级的快速采集，同时显著降低了接收机功耗。这是通过适当调整接收数据和所选序列之间的离散相关性的阈值来说明的。

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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2008 IEEE Biomedical Circuits and Systems Conference

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