Sciweavers

Share
TIT
2011

Concavity of the Feasible Signal-to-Noise Ratio Region in Power Control Problems

8 years 6 months ago
Concavity of the Feasible Signal-to-Noise Ratio Region in Power Control Problems
Signal-to-noise (SNR) ratio is commonly regarded as a reliable measure of the performance of wireless communication systems. Knowledge of the fundamental properties of the feasible SNR region can facilitate the performance optimization of multi-user wireless systems. This paper examines the concavity of the feasible SNR region. In particular, it is shown that for systems with only three users, the feasible SNR region is always concave. As concavity for two-dimensional systems is well-known and concavity for four-dimensional systems does not hold in general, this result fills in a gap on this issue. A concavity result for systems with a general number of users is also established under certain technical conditions. Keyword: Power control, Feasible SNR region, Concavity set
Wing Shing Wong
Added 15 May 2011
Updated 15 May 2011
Type Journal
Year 2011
Where TIT
Authors Wing Shing Wong
Comments (0)
books