In this paper, a novel method for improving the estimation accuracy of the root mean\nsquare (RMS) delay spread from the magnitude of the Channel Transfer Function (CTF) is presented.\nWe utilize the level crossing rate metric in the frequency domain, which is based on scalar power\nmeasurement. The Savitzkyâ??Golay (S-G) filtering method is used to improve the fidelity of the\nchannel delay spread estimator. The presented concept is simple to implement and inexpensive. The\nproposed method is tested on the CTF magnitude data measured in the mmWave frequency band\nat low Signal-to-Noise Ratio (SNR).
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