On the "high SNR" assumption in space-time codes designs
- 1 January 2004
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- Vol. 1, 598-602
- https://doi.org/10.1109/icc.2004.1312559
Abstract
Space-time codes designs commonly rely on the assumption of a high SNR. In this communication, we investigate the impact of this assumption when the channel is correlated. Therefore, we discuss the impact of transmit and receive correlations on the performance of space-time codes as a function of the SNR and the diversity achieved by the codes on independent and identically distributed channels. Full diversity codes are shown not to interact with the channel at high SNRs while at realistic SNRs, interactions occur and affect the coding gain. For non-full diversity codes, interactions with the channel occur whatever the SNR. At realistic SNRs, every space-time code interacts with the channel. While it might be reasonable on independent and identically distributed channels, we show that on correlated channels, the 'high SNR' assumption is totally unrealistic and may lead to bad code designs.Keywords
This publication has 24 references indexed in Scilit:
- Mutual coupling effects on the channel capacity and the space-time processing of MIMO communication systemsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2004
- Robust space-time codes for spatially correlated MIMO channelsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2004
- Effect of spatio-temporal channel correlation on the performance of space-time codesPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2003
- On the effect of correlated fading on several space-time coding and detection schemesPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Robust space-time codes for correlated Rayleigh fading channelsIEEE Transactions on Signal Processing, 2002
- A new view of performance analysis of transmit diversity schemes in correlated Rayleigh fadingIEEE Transactions on Information Theory, 2002
- Effect of spatial fading correlation on performanceof space-time codesElectronics Letters, 2001
- Fading correlation and its effect on the capacity of multielement antenna systemsIEEE Transactions on Communications, 2000
- Performance evaluation of space-time block coding using a realistic mobile radio channel modelPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2000
- Space-time block codes from orthogonal designsIEEE Transactions on Information Theory, 1999