A Further Analysis of Decorrelation Performance of Spatial Smoothing Technique for Real Multipath Sources

Jar-Ferr Yang, Churng Jou Tsai

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

In this corresnondence, we analvze and discuss the decorrelation performance of the spatial smoothing technique based on a first-order prediction approximation to time-delay narrowband signals. The analysis reveals that the decorrelation effect varies with frequency bandwidth, arrival angles, and time delay of the multipath sources. The study of the decorrelation performance with the frequency bandwidth provides more detail about the spatial smoothing than that derived in [1], [2], When the bandwidth of the signal is zero, the proposed analysis is identical to that in [1], [2]. If it is not zero, the upper bound on the effective number of subarrays is suggested to be about K 0.77/FBW. The decorrelation performance is degraded when the number of subarrays added is greater than 0.77/FBW or the distance between the farthest and the reference subarray is more than 0.385λ/FBW, where FBW and λ denote fractional bandwidth and wavelength, respectively.

Original languageEnglish
Pages (from-to)2109-2112
Number of pages4
JournalIEEE Transactions on Signal Processing
Volume40
Issue number8
DOIs
Publication statusPublished - 1992 Jan 1

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Bandwidth
Time delay
Wavelength

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Electrical and Electronic Engineering

Cite this

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abstract = "In this corresnondence, we analvze and discuss the decorrelation performance of the spatial smoothing technique based on a first-order prediction approximation to time-delay narrowband signals. The analysis reveals that the decorrelation effect varies with frequency bandwidth, arrival angles, and time delay of the multipath sources. The study of the decorrelation performance with the frequency bandwidth provides more detail about the spatial smoothing than that derived in [1], [2], When the bandwidth of the signal is zero, the proposed analysis is identical to that in [1], [2]. If it is not zero, the upper bound on the effective number of subarrays is suggested to be about K 0.77/FBW. The decorrelation performance is degraded when the number of subarrays added is greater than 0.77/FBW or the distance between the farthest and the reference subarray is more than 0.385λ/FBW, where FBW and λ denote fractional bandwidth and wavelength, respectively.",
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A Further Analysis of Decorrelation Performance of Spatial Smoothing Technique for Real Multipath Sources. / Yang, Jar-Ferr; Tsai, Churng Jou.

In: IEEE Transactions on Signal Processing, Vol. 40, No. 8, 01.01.1992, p. 2109-2112.

Research output: Contribution to journalArticle

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