Transmit scheme to improve coverage in simulcast system based on wideband channel measurement in indoor at 6 GHz
| Autor: | Xiao-fan Li, Liang Xin, Jun-jun Gao, Jianhua Zhang |
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| Rok vydání: | 2013 |
| Předmět: |
Line-of-sight
Computer Networks and Communications business.industry Computer science ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS Data_CODINGANDINFORMATIONTHEORY Antenna diversity Multipath channels Channel state information Robustness (computer science) Signal Processing Electronic engineering Array gain Telecommunications business Wideband channels Multipath propagation Computer Science::Information Theory Information Systems |
| Zdroj: | The Journal of China Universities of Posts and Telecommunications. 20:48-72 |
| ISSN: | 1005-8885 |
| DOI: | 10.1016/s1005-8885(13)60027-8 |
| Popis: | Array gain would be well exploited to improve power coverage if some powerful multipath components from different radio links can coherently combine at the receiver (Rx). Thus, in this paper, an algorithm is proposed for transmission in simulcast system, where partial channel state information (CSI) is needed. Based on measured multipath channel, performance of the proposed algorithm is evaluated. According to simulation results, the proposed algorithm outperforms the direction summation (DS) scheme and multipath antenna diversity (MAD) algorithm, with 2~4 dB advantage over the latters. Especially in line of sight (LOS) scenario, the advantage is more obvious. Besides, the proposed algorithm brings more gain with increasing number of transmit antennas without additional power. Finally, robustness of the proposed algorithm is examined with imperfect CSI. |
| Databáze: | OpenAIRE |
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