Multi-Antenna System Performance and Impairments in Long Term Evolution Radio Access Networks Using the Extended Spatial Channel Model
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LTE is being deployed to meet consumer demand for high bit rate mobile wireless. This thesis studies 3 areas of wireless communications; phase noise, Doppler and link adaptation, and multi-antenna system performance. The thesis focuses on the performance of 4 base-station (BS) antennas, simulation results using 3GPP's spatial channel model and the effects of impairments and configurations on the downlink. The best performing antennas evaluated are the 4-transmitter, 4-port, correlated cross-polarized BS antennas when TM4's CLSM is used. Despite added overhead, 4 antennas provides gain over 2 antennas due to beamforming. When only 2-ports are available, TM3's OLSM outperforms TM4 as UE velocity increases, since 2-port TM3 is less dependent on CSI. Link adaptation latency contributes to degradation starting at low velocity. In addition, high-speed train simulations show throughput degradation at 350km/hr. Finally, the downlink is subjected to phase noise to show the effect of generated and measured phase noise.
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Copyright © 2014 the author(s). Theses may be used for non-commercial research, educational, or related academic purposes only. Such uses include personal study, research, scholarship, and teaching. Theses may only be shared by linking to Carleton University Institutional Repository and no part may be used without proper attribution to the author. No part may be used for commercial purposes directly or indirectly via a for-profit platform; no adaptation or derivative works are permitted without consent from the copyright owner.
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- 2014
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chauvin-multiantennasystemperformanceandimpairments.pdf | 2023-05-04 | Public | Download |