An Approach to Capacity Analysis of Coarsely Managed Wideband Multiple Access Systems

We consider the problem of coarsely managed multiple access wideband systems, where each user can control its own transmission power and rate, independent of other users’ actions, according to the policy specified by central controlling agent: base station. Even with such coarse coordination, multiuser detection enables a system superior to any orthogonal division system like TDMA. We fully characterise the set of such available coarse management policies for wideband systems: robust spectral efficiency slope region. Finally, we show that slopes on the boundary of robust slope region lead to an elegant interpretation of robust slope region in terms of awarding protected receiver dimensions to each user.