On capacity-optimal precoding for multiple antenna systems subject to EIRP restrictions

C. M. Vithanage, J. P. Coon, S. C. J. Parker

Research output: Contribution to journalArticle (Academic Journal)

27 Citations (Scopus)


Ultra wideband transceivers promise multi-gigabit per second performance at power consumptions commensurate with portable devices. Future products are likely to adopt multiple antennas to maximize performance. Severe FCC EIRP restrictions impose an interesting system design constraint. In this paper, capacity optimal multiple antenna transmission schemes are investigated for EIRP restricted systems under the assumption that the channel is known at the transmitter. It is shown that per subcarrier antenna power allocation, which reduces to antenna selection at low SNR or when using one receive antenna, is optimal for some transmitter configurations. The improvements in capacity are quantified for representative channels.

Original languageEnglish
Pages (from-to)5182-5187
Number of pages6
JournalIEEE Transactions on Wireless Communications
Issue number12
Publication statusPublished - Dec 2008

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