Figure 1
From: On Power Allocation for Parallel Gaussian Broadcast Channels with Common Information
![Figure 1](http://media.springernature.com/full/springer-static/image/art%3A10.1155%2F2009%2F482520/MediaObjects/13638_2008_Article_1675_Fig1_HTML.jpg)
The product of
unmatched parallel degraded broadcast subchannels with
users.