A set of 2M biorthogonal signals is obtained from a set of M ordinary orthogonal signals by augmenting it with the negative of each signal in the set
a. The extension of orthogonal to biorthogonal signals leaves the dimensionality of the signal space unchanged. Explain how.
b. Construct the signal constellation for the biorthogonal signals corresponding to the pair of orthogonal signals shown in given Figure.
![1533_Figure.jpg](https://secure.tutorsglobe.com/CMSImages/1533_Figure.jpg)