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Sparse Signal Recovery by <formula formulatype="inline"> <tex Notation="TeX">${\ell_q}$</tex></formula> Minimization Under Restricted Isometry Property
In the context of compressed sensing, the nonconvex l <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">q</sub> minimization with 0 <; q <; 1 has been studied in recent years. In this letter, by generalizing the sharp bound for l <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1</sub> minimization of Cai and Zhang, we show that the condition σ(s <sup …