Impact of the Transmission Scheme on the Performance in Wireless LANs
Impact of the Transmission Scheme on the Performance in Wireless LANs
复制标题
传输方案对无线局域网性能的影响
DOI:
10.1007/978-3-642-03819-8_29
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发表时间:
2009
期刊:
影响因子:
--
通讯作者:
R. Böhnke
中科院分区:
文献类型:
--
作者:
A. Könsgen;A. Timm-Giel;C. Görg;R. Böhnke
In wireless LANs, different multi-user access methods such as TDMA, OFDMA and SDMA are available which can be used with or without channel knowledge at the transmitter and a single antenna (MISO) or multiple antennas (MIMO) at the receiver. A cross-layer scheduler is considered which can be configured with these different PHY methods as well as with knowledge about application requirements and channel conditions at the MAC layer. The scheduler computes priorities on the MAC layer that are handed over to the physical layer in order to keep quality-of-service constraints such as throughput and delay. In this paper, it is demonstrated that controlling the priorities by a QoS aware resource allocation method allows to meet the requirements by the applications under various channel conditions. MISO-SDMA has a relatively small performance penalty in comparison to MIMO-SDMA which gives the best result. For MIMO-TDMA and -OFDMA, channel knowledge at the PHY layer does not result in essential performance enhancement.
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DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
G. D. Galdo
通讯作者:
G. D. Galdo
DOI:
10.1109/iwcld.2009.5156525
发表时间:
2009
期刊:
2009 Second International Workshop on Cross Layer Design
影响因子:
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作者:
R. Böhnke;K.D. Kammeyer;A. Könsgen;C Görg
通讯作者:
C Görg
DOI:
10.1109/pimrc.2007.4394577
发表时间:
2007
期刊:
2007 IEEE 18th International Symposium on Personal, Indoor and Mobile Radio Communications
影响因子:
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作者:
A. Könsgen;W. Herdt;A. Tirnm-Giel;H. Wang;C. Görg
通讯作者:
C. Görg
DOI:
10.1109/iwcld.2007.4379026
发表时间:
2007
期刊:
2007 International Workshop on Cross Layer Design
影响因子:
--
作者:
A. Könsgen;W. Herdt;H. Wang;A. Timm-Giel;R. Böhnke;C. Görg
通讯作者:
C. Görg