Spatial Multiplexing in Cellular MIMO-CDMA Systems with Linear Receivers: Outage Probability and Capacity
- 23 July 2007
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Wireless Communications
- Vol. 6 (7) , 2612-2621
- https://doi.org/10.1109/twc.2007.05949
Abstract
Even though spatial multiplexing provides a significant spectral efficiency advantage in a single point-to-point noise- limited link, recent studies have shown that this advantage can be lost in cellular MIMO systems unless extra diversity is provided. Spread spectrum is a likely candidate for the extra diversity because spread spectrum can simultaneously provide frequency diversity and robustness to interference. This paper investigates the effectiveness of spatial multiplexing in the forward link of cellular MIMO-CDMA systems with linear receivers. Through the development of new closed-form results on outage probability and capacity for MIMO-CDMA, we show that even MIMO-CDMA loses the spatial multiplexing gain in a cellular context. These results indicate that a practical cellular MIMO system, which will be interference-limited and have a low-complexity receiver, requires new study on techniques to efficiently reduce the impact of the other-cell interference. The developed analytical framework can be used for evaluating other techniques.Keywords
This publication has 29 references indexed in Scilit:
- Switching Between Diversity and Multiplexing in MIMO SystemsIEEE Transactions on Communications, 2005
- Diversity and multiplexing: a fundamental tradeoff in multiple-antenna channelsIEEE Transactions on Information Theory, 2003
- On using perturbation analysis to do sensitivity analysis: derivatives vs. differencesPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2003
- Transmit selection in spatial multiplexing systemsIEEE Communications Letters, 2002
- A comparison of detection algorithms including BLAST for wireless communication using multiple antennasPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Data throughputs using multiple-input multiple-output (MIMO) techniques in a noise-limited cellular environmentIEEE Transactions on Wireless Communications, 2002
- Accurate DS-CDMA bit-error probability calculation in Rayleigh fadingIEEE Transactions on Wireless Communications, 2002
- Antenna selection for spatial multiplexing systems with linear receiversIEEE Communications Letters, 2001
- Outage probability of cellular CDMA systems with space diversity, Rayleigh fading, and power control errorIEEE Communications Letters, 1998
- The impact of antenna diversity on the capacity of wireless communication systemsIEEE Transactions on Communications, 1994