S. Sirianunpiboon

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The generalized coherence (GC) estimate is a well studied statistic for detection of a common but unknown signal on several noisy channels. In this paper, it is shown that the GC detector arises naturally from a Bayesian perspective. Specifically, it is derived as a test of the hypothesis that the signals in the channels are independent Gaussian processes(More)
Perfect space-time block codes (STBCs) were first introduced by Oggier et al. to have full rate, full diversity and non-vanishing determinant. A maximum likelihood decoder based on the sphere decoder has been used for efficient decoding of perfect STBCs. However the worst-case complexity for the sphere decoder is an exhaustive search. In this paper we(More)
A robust lter for the estimation of the pulse repetition interval (PRI) of a periodic radar pulse train is derived. The lter uses only the pulse times of arrival (TOA) and is speciically designed, using mixture distribution techniques developed for the robustiication of the Kalman lter to outliers, to be robust to both missing pulses and to a small number(More)
— Space-time codes built out of Alamouti components have been adopted in wireless standards such as UMTS, IEEE 802.11n and IEEE 802.16 where they facilitate higher data rates through multiplexing of parallel data streams and the addition of two or more antennas at the receiver that perform interference cancellation. This paper provides new theoretical(More)
—Motivated by electronic surveillance applications, this paper considers the problems of detecting the presence of and characterizing a radar transmitter using data collected at a spatially distributed suite of receivers. A characterization of particular interest is determining the rank of the transmitted signal, which enables discrimination between MIMO(More)