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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Ispas, A. Cuiling Sun Schneider, C. Xitao Gong Ascheid, G. Thoma, R. |
| Copyright Year | 2012 |
| Description | Author affiliation: Chair for Integrated Signal Processing Systems, RWTH Aachen University, Germany (Ispas, A.; Cuiling Sun; Xitao Gong; Ascheid, G.) || Institute of Information Technology, Ilmenau University of Technology, Germany (Schneider, C.; Thoma, R.) |
| Abstract | The extension of multiple-input multiple-output (MIMO) systems to the polarization domain is known to have potential benefits in terms of the spectral efficiency. It is thus of importance to understand how the channel influences the spectral efficiency, e.g., when a dual-polarized (DP) antenna setup should be favored over a single-polarized (SP) one. In this work, we study the achievable rate, i.e., the sum mutual information (MI) of all transmitted streams, over DP MIMO channels with linear receivers. We derive an approximation of the sum MI with a linear minimum mean squared error (LMMSE) or a zero forcing receiver which is an explicit function of statistical channel parameters. The evaluations of selected 4×4 SP and DP MIMO setups are based on channel measurements performed at 2.53 GHz in an urban macrocell scenario. The results reveal that DP antenna setups can yield substantial gains in the sum MI on links with high K-factors and high signal-to-noise ratios (SNRs). Moreover, the degradation in the sum MI with two streams due to the use of an LMMSE receiver is found to be small, especially for the DP antenna setup. The approximate evaluation of the sum MI is able to reproduce the SNR threshold region in which a second transmitted stream should be activated or one should switch from an SP to a DP antenna setup. |
| Starting Page | 2043 |
| Ending Page | 2048 |
| File Size | 204764 |
| Page Count | 6 |
| File Format | |
| ISBN | 9781467325660 |
| ISSN | 21669570 |
| e-ISBN | 9781467325691 |
| e-ISBN | 9781467325684 |
| DOI | 10.1109/PIMRC.2012.6362690 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2012-09-09 |
| Publisher Place | Australia |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Signal to noise ratio MIMO Approximation methods Receivers Antennas Antenna measurements Vectors |
| Content Type | Text |
| Resource Type | Article |
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