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

作　　者：葛新 刘功亮 王红丹 王勇 张乃通 

机构地区：[1]School of Electronics and Information Engineering,Harbin Institute of Technology [2]School of Information Science and Engineering,Harbin Institute of Technology

出　　处：《Journal of Harbin Institute of Technology(New Series)》2012年第2期85-90,共6页哈尔滨工业大学学报（英文版）

基　　金：Sponsored by the National Natural Science Foundation of China (Grant No. 61001093);the National Basic Research Program of China (Grant No.2007CB310606);the Development Program for Outstanding Young Teachers in Harbin Institute of Technology (Grant No. HITQNJS. 2008. 063);the Natural Scientific Research Innovation Foundation in Harbin Institute of Technology(HIT. NSRIF. 2011114)

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.Considering the advantage of interleave-division multiple-access （IDMA） technique and the techni- cal 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 maxi- mize the resource utilization. After establishing the multi-beam satellite system model based on variable sprea- ding 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 simula- tion results show that IDMA under the proposed scheme can provide better QoS, in terms of the blocking/drop- ping probability, outage probability as well as delay performance.

关 键 词：IDMA call admission control power allocation rate adaptation SINR evolution muhi-beamsatellite system 

分 类 号：TN927.23[电子电信—通信与信息系统]