Frequency Domain Zadoff-Chu Sounding Technique for USRPs
Frequency Domain Zadoff-Chu Sounding Technique for USRPs
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USRP 的频域 Zadoff-Chu 探测技术
DOI：
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
J. Blumenstein
中科院分区：
文献类型：
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作者：
Edward Kassem;R. Maršálek;J. Blumenstein
本文提出了一种无线信道探测技术，并给出了其实际测量结果。所提出的技术被用来表征不同的室内信道的800-900 MHz频带。我们使用通用软件无线电外设（USRP）和GNU无线电软件。在发射机侧，生成Zadoff-Chu序列并在信道上发送，而发射序列的载波频率在测量的带宽上扫描。所实现的响应也与频域技术进行了比较，其中连续波被用作探测信号。使用所提出的方法，基本的信道特性，如RMS延迟扩展，平均额外延迟，路径损耗和相干带宽提取在较短的时间内相比，连续波方法。
This paper proposes a technique for a wireless channel sounding and shows its real-world measurement results. The proposed technique is exploited to characterize different indoor channels for a 800–900 MHz band. We utilize an Universal Software Radio Peripheral (USRP) and GNU Radio software. At the transmitter side, Zadoff-Chu sequence is generated and sent across the channel, while the carrier frequency of the transmitted sequence is swept across the measured bandwidth. The achieved response is also compared with the frequency domain technique, where continuous wave is used as a sounding signal. Using the proposed method, the basic channel characteristics like RMS delay spread, mean excess delay, path-loss and coherence bandwidth are extracted in shorter time period compared to the continuous wave method.