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- Lei, Zhu
(författare)
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On the Downlink Performance of Multicarrier Allocation (MCA)-based System for Wireless IP Networks
- 2001
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Konferensbidrag (refereegranskat)abstract
- Wireless IP is becoming a cutting-edge technology to accomplish Internet truly wireless. Aiming at transmitting IP packets over wireless bearer efficiently, Multicarrier is believed to be a good candidate by offering flexible and high peak rate to each user, as well as reducing buffer size at a receiver. In this article, we take a glimpse at current wireless access technologies for wireless IP, and then from the aspect of radio resource management (RRM), introduce a multicarrier allocation (MCA) approach. Focusing on impacts of frequency diversity, power control, and so-called carrier-grouping techniques, we discuss and investigate the downlink performance enhancement of multicarrier based systems, in terms of spectral efficiency (data throughput) and system fairness. As a brief investigation, simulations are conducted on network level. Finally, conclusions are drawn that frequency diversity in combine with maximal ratio combining obtains significant improvement on both spectral efficiency and system fairness. Dealing with co-channel interference, power control and carrier-grouping enhance system fairness. We also caution that study radio resource management for multicarrier based systems is interested and important.
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