Current Result Document :
| 한글제목(Korean Title) |
싱글 혹은 다중안테나 셀룰러 시스템에서의 싱글 홉과 투 홉 시스템의 수율 비교 |
| 영문제목(English Title) |
Throughput Comparison between Single- and Two-Hop Cellular Systems with Single or Multiple Antennas |
| 저자(Author) |
윤수하
백선엽
반태원
성단근
Su Ha Yoon
Seon Yeob Baek
Tae Won Ban
Dan Keun Sung
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| 원문수록처(Citation) |
VOL 19 NO. 01 PP. IIIA3 ~ 0005 (2009. 04) |
한글내용
(Korean Abstract) |
4G systems are expected to use several high frequency spectrum bands which may cause more shadowing zones. Shadowing may limit cell coverage and significantly degrades quality of service (QoS). In order to solve this problem, deployment of relay stations (RSs) has been proposed and standardized as one of the mandatory features in the IEEE 802.16m which is one of strong candidates for 4G systems. In this paper, we evaluate the performance of both a two-hop cellular system with RSs and a conventional single-hop cellular system under various scenarios, and compare the throughput performance of both systems with two antenna schemes: Single-Input-Single-Output (SISO) and Single-User Multi-Input-Multi-Output (SU-MIMO). The result shows that the system throughput highly depends on the location of RSs, RS transmission power, and MAP overhead. Without considering the MAP overhead, the two-hop system outperforms the single-hop system in most scenarios. On the other hand, if we consider the MAP overhead, the amount of expected performance improvement is significantly reduced. To make the best use of RSs, system designers need to carefully take into account the location of RSs, RS transmission power, and overhead.
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영문내용
(English Abstract) |
4G systems are expected to use several high frequency spectrum bands which may cause more shadowing zones. Shadowing may limit cell coverage and significantly degrades quality of service (QoS). In order to solve this problem, deployment of relay stations (RSs) has been proposed and standardized as one of the mandatory features in the IEEE 802.16m which is one of strong candidates for 4G systems. In this paper, we evaluate the performance of both a two-hop cellular system with RSs and a conventional single-hop cellular system under various scenarios, and compare the throughput performance of both systems with two antenna schemes: Single-Input-Single-Output (SISO) and Single-User Multi-Input-Multi-Output (SU-MIMO). The result shows that the system throughput highly depends on the location of RSs, RS transmission power, and MAP overhead. Without considering the MAP overhead, the two-hop system outperforms the single-hop system in most scenarios. On the other hand, if we consider the MAP overhead, the amount of expected performance improvement is significantly reduced. To make the best use of RSs, system designers need to carefully take into account the location of RSs, RS transmission power, and overhead.
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