动态频谱接入网频率敏捷干扰感知信道测深

Qi Chen, A. Wyglinski, G. Minden
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引用次数: 6

摘要

在本文中,我们提出了一种新的信道探测技术,称为多载波直接序列扫描时延相互关联(MC-DS-STDCC),该技术旨在最大限度地减少动态频谱接入(DSA)网络中现有许可传输的干扰。传统的信道测深仪在特定频段上工作时使用相同的发射功率水平。然而,在DSA网络中允许的跨频谱的最大可容忍发射功率水平可能不均匀。我们提出的信道测深仪旨在定制整个操作频带的发射功率水平,将其限制在许可和未许可设备以及监管机构施加的约束下。采用多载波扩频调制和传统信道探测方法的组合,我们提出的技术在15片和31片扩频序列的信噪比分别为-13 dB和-17 dB时,估计信道脉冲响应的均方误差分别为10-3。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Frequency Agile Interference-Aware Channel Sounding for Dynamic Spectrum Access Networks
In this paper, we propose a novel channel sounding technique, called the multicarrier direct sequence swept time delay cross-correlation (MC-DS-STDCC), which is designed to minimize the interference with incumbent licensed transmissions within the context of a dynamic spectrum access (DSA) network. Conventional channel sounders employ the same transmit power level when operating over a specific frequency band. However, the maximum-tolerable transmit power levels permitted across the spectrum within a DSA network can potentially be non-uniform. Our proposed channel sounder is designed to tailor the transmit power level across the frequency band of operation, limiting it to the constraints imposed by both licensed and unlicensed devices, as well as by regulatory agencies. Employing a combination of multicarrier spread spectrum modulation and a conventional channel sounding approach, our proposed technique achieves a mean squared error of the estimated channel impulse response of 10-3 at an SNR of -13 dB and -17 dB respectively for 15- and 31-chip spreading sequences.
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