Achieving the Capacity Region Boundary of Fading CDMA Channels via Generalized Iterative Waterfilling
- 19 December 2006
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Wireless Communications
- Vol. 5 (10) , 3215-3223
- https://doi.org/10.1109/twc.2006.04785
Abstract
We characterize the optimum power control policies that achieve arbitrary rate tuples on the boundary of the capacity region of a power controlled, code division multiple access (CDMA) system in a fading channel with perfect channel state information (CSI). We propose a "generalized" waterfilling approach, and provide an iterative algorithm that solves for the optimum power allocation policy, for a given arbitrary rate tuple on the boundary of the capacity region. We then investigate the effects of limited feedback on the capacity region, and demonstrate that a good power control policy may require only a very low rate feedbackKeywords
This publication has 8 references indexed in Scilit:
- Optimum Power Control for CDMA With Deterministic Sequences in Fading ChannelsIEEE Transactions on Information Theory, 2004
- Iterative Water-Filling for Gaussian Vector Multiple-Access ChannelsIEEE Transactions on Information Theory, 2004
- Information capacity and power control in single-cell multiuser communicationsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Fading channels: information-theoretic and communications aspectsIEEE Transactions on Information Theory, 1998
- Multiaccess fading channels. I. Polymatroid structure, optimal resource allocation and throughput capacitiesIEEE Transactions on Information Theory, 1998
- Capacity of fading channels with channel side informationIEEE Transactions on Information Theory, 1997
- Vector Quantization and Signal CompressionPublished by Springer Nature ,1992
- Least squares quantization in PCMIEEE Transactions on Information Theory, 1982