Abstract
We derive two types of optimal uplink transmission power control in synchronous and asynchronous CDMA time varying fading channel with multiple user classes, random spreading sequences and MMSE multiuser detector. One optimal policy minimizes the outage probability subject to maximum average power budget and maximum transmission power constraints. The other minimizes the average power budget subject to maximum outage probability and maximum transmission power constraints. We show that for a system with a large number of users and a proportionally large processing gain, both optimal policies are threshold cut-off policies. We express the policies explicitly and show how to compute their outage probabilities.
| Original language | English |
|---|---|
| Pages (from-to) | 1044-1054 |
| Number of pages | 11 |
| Journal | Proceedings - IEEE INFOCOM |
| Volume | 2 |
| State | Published - 23 Nov 2004 |
| Event | IEEE INFOCOM 2004 - Conference on Computer Communications - Twenty-Third Annual Joint Conference of the IEEE Computer and Communications Societies - Hongkong, China Duration: 7 Mar 2004 → 11 Mar 2004 |
ASJC Scopus subject areas
- General Computer Science
- Electrical and Electronic Engineering