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Content Provider | IET Digital Library |
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Author | Amini, Sahar Choi, Kwonhue |
Abstract | The authors propose a dual mode transmit diversity (TD) scheme switching between co-located TD (CTD) and distributed TD (DTD) based on the quasi-static channel parameters. The authors first compare CTD and DTD according to spatial correlation coefficient (SCC) of CTD and distributed mean channel gain (MCG) of DTD. By using asymptotic bit error rate (BER) formula, the authors derive a compact and very accurate border equation of DTD-preferred and CTD-preferred regions in MCG ratio and SCC space. Based on the derived border, the authors propose a dual mode TD scheme switching between CTD and DTD according to MCG ratio and SCC. It is shown that the signal-to-noise ratio (SNR) gain contours and the border line for TD switching are irrespective of SNR and modulation scheme. The results show that the proposed dual mode scheme outperforms the single modes not only in the location-specific performance but also in the averaged performance over the cell area. In the averaged BER over the entire cell area, performance improvement of the dual mode scheme over CTD is significant if SCC is roughly larger than 0.6 irrespective of cell shape, spatial correlation model of CTD, path loss exponent and shadowing model. |
Starting Page | 1614 |
Ending Page | 1622 |
Page Count | 9 |
ISSN | 17518628 |
Volume Number | 10 |
e-ISSN | 17518636 |
Issue Number | Issue 13, Sep (2016) |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-com/10/13 |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-com.2015.0622 |
Journal | IET Communications |
Publisher Date | 2016-09-01 |
Access Restriction | Open |
Rights Holder | © The Institution of Engineering and Technology |
Subject Keyword | Asymptotic Bit Error Rate Base Station BER Formula Distributed Transmit Diversity Diversity Reception Dual Mode Transmit Diversity Error Statistics Modulation Modulation And Coding Method Modulation Scheme Path Loss Exponent Quasi-static Channel Parameter Radio Link And Equipment Shadowing Model Signal to Noise Ratio Single Antenna SNR Gain Spatial Correlation Model Statistics Telecommunication Channel Transmitting Antenna |
Content Type | Text |
Resource Type | Article |
Subject | Electrical and Electronic Engineering Computer Science Applications |
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