IDMA-based MAC protocol for satellite networks with consideration on channel quality.
IDMA-based MAC protocol for satellite networks with consideration on channel quality.
复制标题
考虑信道质量的基于IDMA的卫星网络MAC协议
DOI：
10.1155/2014/181734
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发表时间：
2014
影响因子：
--
通讯作者：
Kang W
中科院分区：
文献类型：
--
作者：
Liu G;Fang X;Kang W
为了克服现有的基于TDMA或CDMA的卫星网络介质访问控制（MAC）协议的缺点，将交织分多址（IDMA）技术引入卫星通信网络。因此，本文提出了一种新的宽带IDMA MAC协议的信道质量的基础上，包括一个动态的功率分配算法，速率自适应算法，和呼叫准入控制（CAC）计划。首先，结合IDMA信干噪比演进技术和信道质量预测的功率分配算法被开发，以保证即使在恶劣的信道条件下的高功率效率。其次，基于每个时隙准确的信道信息，通过速率降级的方式，实现有效的速率自适应算法。此外，针对新兴的IDMA系统，提出了基于信道质量预测的CAC方案，该方案将新的功率分配算法、速率调度和缓存策略相结合，能够支持多种业务类型，并提供与不同优先级相对应的服务质量（QoS）要求。仿真结果表明，新的宽带IDMA MAC协议能够在考虑多用户检测（MUD）影响和多媒体业务QoS要求的情况下，对可用资源做出准确的估计，从而降低中断概率，提高系统整体吞吐量。
In order to overcome the shortcomings of existing medium access control (MAC) protocols based on TDMA or CDMA in satellite networks, interleave division multiple access (IDMA) technique is introduced into satellite communication networks. Therefore, a novel wide-band IDMA MAC protocol based on channel quality is proposed in this paper, consisting of a dynamic power allocation algorithm, a rate adaptation algorithm, and a call admission control (CAC) scheme. Firstly, the power allocation algorithm combining the technique of IDMA SINR-evolution and channel quality prediction is developed to guarantee high power efficiency even in terrible channel conditions. Secondly, the effective rate adaptation algorithm, based on accurate channel information per timeslot and by the means of rate degradation, can be realized. What is more, based on channel quality prediction, the CAC scheme, combining the new power allocation algorithm, rate scheduling, and buffering strategies together, is proposed for the emerging IDMA systems, which can support a variety of traffic types, and offering quality of service (QoS) requirements corresponding to different priority levels. Simulation results show that the new wide-band IDMA MAC protocol can make accurate estimation of available resource considering the effect of multiuser detection (MUD) and QoS requirements of multimedia traffic, leading to low outage probability as well as high overall system throughput.
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影响因子：
11.2
作者：
Li, P
通讯作者：
Li, P
DOI：
10.1002/sat.941
发表时间：
2010-01-01
影响因子：
1.7
作者：
Chini, Paolo;Giambene, Giovanni;Kota, Sastri
通讯作者：
Kota, Sastri
影响因子：
4.5
作者：
Perez-Fontan, F;Vazquez-Castro, MA;Arbesser-Rastburg, B
通讯作者：
Arbesser-Rastburg, B
影响因子：
6.8
作者：
Sharma, Prachee;Chandra, Kavitha
通讯作者：
Chandra, Kavitha
影响因子：
3.7
作者：
Wang, XD
通讯作者：
Wang, XD