Sciweavers

Share
IWCMC
2006
ACM

Performance evaluation of joint downlink scheduling in multi-cellular OFDMA systems based on IEEE 802.16a

9 years 2 months ago
Performance evaluation of joint downlink scheduling in multi-cellular OFDMA systems based on IEEE 802.16a
The employment of the OFDMA transmission technique in broadband radio systems shows several benefits. Especially the exploitation of multi-user diversity with the help of sophisticated scheduling algorithms can significantly increase the system capacity. In this paper, the performance of joint scheduling of downlink data transmissions for access point sets is evaluated in a multi-cellular system. The latter is compared with an independent scheduling on orthogonal subchannel sets in the access points. The general MAC structure of the investigated system is thereby based on IEEE 802.16a. However, concerning the Physical Layer there is an important difference. In IEEE 802.16a, the exploitation of multi-user diversity is not possible since the OFDMA subchannel scheme is based on an interference and fading averaging approach. The technique examined in this paper in contrast can be regarded as an avoidance approach which is subject to diversity in the subchannel quality. A basic OFDMA sched...
Michael Einhaus, Ole Klein, Bernhard Walke, Daniel
Added 14 Jun 2010
Updated 14 Jun 2010
Type Conference
Year 2006
Where IWCMC
Authors Michael Einhaus, Ole Klein, Bernhard Walke, Daniel Bültmann
Comments (0)
books