2 papers
math.FA2007
Measurement of time--varying Multiple--Input Multiple--Output Channels
Goetz E. Pfander
We derive a criterion on the measurability / identifiability of Multiple--Input Multiple--Output (MIMO) channels based on the size of the so-called spreading support of its subchan…
math.CA2007
On the invertibility of "rectangular" bi-infinite matrices and applications in time--frequency analysis
Goetz E. Pfander
Finite dimensional matrices having more columns than rows have no left inverses while those having more rows than columns have no right inverses. We give generalizations of these s…