Downlink call admission control with power allocation and rate scheduling for IDMA-based multi-beam satellite systems

被引：0

作者：

葛新 ^{[1
]}

刘功亮 ^{[2
]}

王红丹 ^{[2
]}

王勇 ^{[1
]}

张乃通 ^{[1
]}

机构：

[1] School of Electronics and Information Engineering,Harbin Institute of Technology

[2] School of Information Science and Engineering,Harbin Institute of Technology

来源：

Journal of Harbin Institute of Technology(New series) | 2012年 / 19卷 / 02期

基金：

中国国家自然科学基金;

关键词：

IDMA; call admission control; power allocation; rate adaptation; SINR evolution; multi-beam satellite system;

D O I：

暂无

中图分类号：

V423.45 [];

学科分类号：

082501 ;

摘要：

Considering the advantage of interleave-division multiple-access(IDMA) technique and the technical bottlenecks in the existing satellite systems,IDMA is introduced into satellite communication networks.To further validate the IDMA into satellite systems,an effective call admission control(CAC) is proposed to maximize the resource utilization.After establishing the multi-beam satellite system model based on variable spreading gain(VSG) IDMA,the power allocation scheme based on SINR evolution technique and transmission rate adaptation for nonreal time interactive traffic are designed as integrated parts of the CAC,working together to improve the system performance in terms of power efficiency and throughput.Further,the analysis and simulation results show that IDMA under the proposed scheme can provide better QoS,in terms of the blocking/dropping probability,outage probability as well as delay performance.

引用

页码：85 / 90

页数：6