In this paper, we propose a vectorized noncircular MUSIC (VNCM) algorithm based on the concept of the coarray, which can construct the difference and sum (diff-sum) coarray, for direction finding of the noncircular (NC) quasi-stationary sources. Utilizing both the NC property and the concept of the Khatri-Rao product, the proposed method can be applied to not only the ULA but also sparse arrays...

The synchronization and/or time acquisition problem in the presence of interferences has been strongly studied these last two decades, mainly to mitigate the multiple access interferences from other users in DS/CDMA systems. Among the available receivers, only some scarce receivers may also be used in other contexts such as F/TDMA systems. However, these receivers assume implicitly or explicitl...

Abstract Researchers have recently shown an increased interest in estimating the direction‐of‐arrival (DOA) of wideband noncircular sources, but existing studies been restricted to subspace‐based methods. An off‐grid sparse recovery‐based algorithm is proposed this paper improve accuracy algorithms low signal‐to‐noise ratio situations. The covariance and pseudo matrices can be jointly represent...

This paper introduces a machinery called attributed top-down parsing automaton which performs top{down parsing of strings and, simultaneously, the evaluation of arbitrary noncircular attribute grammars. The strategy of the machinery is based on a single depth{ rst left{to{right traversal over the syntax tree. There is no need to traverse parts of the syntax tree more than once, and hence, the s...