Resource allocation algorithm with cross-layer design for DiffServ-based OFDM systems

doi:1005-8885 (2007) 02-0045-06

中国邮电高校学报(英文) ›› 2007, Vol. 14 ›› Issue (2): 45-50.doi: 1005-8885 (2007) 02-0045-06

Resource allocation algorithm with cross-layer design for DiffServ-based OFDM systems

李晓辉;韩明;易克初;,田斌

Xidian University

收稿日期:2006-11-22 修回日期:1900-01-01 出版日期:2007-06-30

Resource allocation algorithm with cross-layer design for DiffServ-based OFDM systems

LI Xiao-hui; HAN Ming;YI Ke-chu;TIAN Bin

Xidian University

Received:2006-11-22 Revised:1900-01-01 Online:2007-06-30

摘要/Abstract

摘要：

According to the quality of service (QoS) requirements of differentiated service (DiffServ), a cross-layer resource allocation algorithm for multi-user orthogonal frequency division multiplexing（OFDM）systems is presented. The constant rate is maintained by adjusting the power dynamically for the voice traffics with high priority, whereas the fairness amongst the data traffics is guaranteed by weighted fairness queued (WFQ) algorithm. The two above-mentioned strategies are used for video traffics to realize variable data rate with the constraint of the minimum rate. Combing all these methods, both the throughput and the fairness are ensured when there are multiple users in the OFDM system. Simulation results indicate the validity of the proposed algorithm, which can work well even if the SNR is less than 0 dB.

关键词:

OFDM;cross-layer;QoS;DiffServ

Abstract:

Key words:

OFDM;cross-layer; QoS;DiffServ

中图分类号:

TN925.9

LI Xiao-hui; HAN Ming;YI Ke-chu;TIAN Bin. Resource allocation algorithm with cross-layer design for DiffServ-based OFDM systems[J]. Acta Metallurgica Sinica(English letters), 2007, 14(2): 45-50.

参考文献

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Resource allocation algorithm with cross-layer design for DiffServ-based OFDM systems

Resource allocation algorithm with cross-layer design for DiffServ-based OFDM systems

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