Optimized Power Allocation for Multiple Access Systems with Practical Coding and Iterative Multi-User Detection
Peng Wang, Li Ping, Lihai Liu · Turbo Codes&Related Topics; 6th International ITG-Conference on Source and Channel Coding (TURBOCODING), 2006 4th International Symposium on · 2006
In this paper, we present an optimized power allocation technique based on an interior-point method (IPM) for practically coded code-division multiple-access (CDMA) or interleave-division multiple-access (IDMA) systems over multiple access channels. A variety of numerical results are presented to demonstrate the efficiency of the proposed technique. It is shown that significant performance improvements (compared with orthogonal systems such as TDMA and FDMA) are achievable by applying iterative multi-user detection (MUD) to CDMA or IDMA in fading channels.