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cs.IT2011
Degrees of Freedom of a Communication Channel and Kolmogorov numbers
Ram Somaraju, Jochen Trumpf
In this note, we show that the operator theoretic concept of Kolmogorov numbers and the number of degrees of freedom at level of a communication channel are closely related. Li…
cs.IT2009★ 1 cited
Degrees of Freedom of a Communication Channel: Using Generalised Singular Values
Ram Somaraju, Jochen Trumpf
A fundamental problem in any communication system is: given a communication channel between a transmitter and a receiver, how many "independent" signals can be exchanged between th…
cs.IT2005
Uncertainty Principles for Signal Concentrations
Ram Somaraju, Leif W. Hanlen
Uncertainty principles for concentration of signals into truncated subspaces are considered. The ``classic'' uncertainty principle is explored as a special case of a more general o…