The set of overlaps can be complex for a large sample, making the definition of windows semi-arbitrary.
Moreover, these methods require the solution of one or two QP (QCQP) subproblems at each iteration, especially, some subproblems may be complex for the large-scale problems.
The result is complex design for large rings production machine.
Firstly, computing the inverse and determinant of the covariance matrices is complex, especially for large N c +N d.
Furthermore if the system keeps changing and is inconsistent, then the deployment procedures can also be complex and time consuming, especially for large applications with multiple interfaces and controls providing numerous individual and integrated functionalities.
Linear equalization requires the inversion of the frequency channel matrix, which is prohibitively complex for large OFDM symbols.
Therefore, the failure mode is more complex for larger values of D.
Some compensation methods have been proposed to mitigate the degradation of radiation characteristics caused by composite material radomes, however most of them are complex and not applicable for large radomes, for example, the modification of geometric shape by grinding process.
Biological drugs are complex proteins, for instance, because of their large size, intricate structure, sensitivity to environmental conditions, difficult manufacturing procedures, and the possibility of immunogenicity.
The genetic model is improved by including pedigree information through an additive relationship matrix, A. This matrix can be quite large and complex for large populations involving many generations, and its inverse is required when solving the mixed model equations.
