Spectral-efficiency of multi-antenna links in ad-hoc wireless networks with limited Tx CSI
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An asymptotic expression is derived for the mean spectral efficiency of multi-antenna links randomly distributed on a plane in a uniform manner where transmitters (Tx) have Channel-State-Information (CSI) of the channels between themselves and their target receivers while receivers (Rx) have CSI between themselves and all transmitters. The mean per-link spectral efficiency in the network is found to increase if nodes transmit using a subset of their strongest channel modes instead of the link-optimal strategy of water-filling on all channel modes (Farrokhi et al.). For reasonable parameters, this system which requires limited Tx CSI, has approximately double the mean spectral efficiency of systems without Tx CSI.
Date issued
2009-11Department
Lincoln Laboratory; Massachusetts Institute of Technology. Research Laboratory of ElectronicsJournal
Proceedings of the Conference Record of the Forty-Third Asilomar Conference on Signals, Systems and Computers 2009
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Citation
Govindasamy, Siddhartan, Daniel W. Bliss, and David H. Staelin. “Spectral-efficiency of Multi-antenna Links in Ad-hoc Wireless Networks with Limited Tx CSI.” Conference Record of the Forty-Third Asilomar Conference on Signals, Systems and Computers 2009. 1714–1718. © Copyright 2009 IEEE
Version: Final published version
ISBN
978-1-4244-5825-7
ISSN
1058-6393