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rate adaptation Schemes for Different Service Requirements in the Code Division Multiple Access Environment

The Journal of China Universities of Posts and Telecommunications 1994年第1期1卷 16-21页

作者： Yang Dacheng (Department of Telecommunications Engineering, Beijing University of Posts arid Telecommunications, Beijing 100088, P. R. China)

the of the important requirements of any candidate architecture for the future personal communication System is the flexibility to support several different service requirements. These services may require different bearer rates or different Ed/N0 requirements. This paper will propose two rate adaptation schemes which could be applied to the Code Division Multiple Access (CDMA) architecture for accepting different service requirements.'.

关键词： CDMA rate adaptation

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Joint Optimization of Admission Control and rate adaptation for Video Sharing over Multirate Wireless Community Cloud

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China Communications 2016年第8期13卷 24-40页

作者： Peng Zhao Xinyu Yang Department of Computer Science and Technology Xi'an Jiaotong University

Emerging wireless community cloud enables usergenerated video content to be shared and consumed in a social context. However, the nature of shared wireless medium and timevarying channels seriously limits the quality of service(QoS), partially owing to the lack of mechanisms for effectively utilizing multi-rate channel resources. In this paper, the joint optimization of admission control and rate adaptation is proposed, resulting in a bandwidth-aware rate-adaptive admission control(BRAC) scheme to provide bandwidth guarantee for sharing social multimedia contents. The analytical approach leads to the following major contributions:(1) a bandwidth-aware rate selection(BRS) algorithm to optimally meet the bandwidth requirement of the data session and channel conditions at the physical layer;(2) a routing-coupled rate adaption and admission control algorithm to admit data sessions with bandwidth guarantee. Moreover, extensive numerical simulations suggest that BRAC is efficient and effective in meeting the bandwidth requirements for sharing social multimedia contents. These insights will shed light on communication system implementation for multimedia content sharing over multirate wireless community cloud.

关键词： wireless community cloud multirate rate adaptation bandwidth guarantee admission control

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维普期刊数据库

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rate adaptation for Decoding-and-Forward Relay Channel by Random Projections Codes

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Journal of Computer and Communications 2016年第4期4卷 169-179页

作者： Min Wang Qin Zou Caihui Liu College of Mathematics and Computer Science Gannan Normal University Ganzhou China

This paper investigates rate adaptation schemes for decoding-and-forward (DF) relay system based on random projections codes (RPC). We consider a classic three node relay system model, where relay node performs on half-duplex mode. Then, we give out receiving diversity relay scheme and coding diversity relay scheme, and present their jointly decoding methods. Furthermore, we discuss the performance of the two schemes with different power allocation coefficients. Simulations show that our relay schemes can achieve different gain with the help of relay node. And, we should allocate power to source node to just guarantee relay node can decode successfully, and allocate remain power to relay node as far as possible. In this way, this DF relay system not only achieves diversity gain, but also achieves higher and smooth spectrum efficiency.

关键词： rate adaptation Decoding-and-Forward Relay Random Projections Codes rateless Code

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

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Journal of Harbin Institute of Technology(New Series) 2012年第2期19卷 85-90页

作者：葛新刘功亮王红丹王勇张乃通 School of Electronics and Information Engineering Harbin Institute of Technology School of Information Science and Engineering Harbin Institute of Technology

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 *** further validate the IDMA into satellite systems,an effective call admission control(CAC) is proposed to maximize the resource *** 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 ***,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.

关键词： IDMA call admission control power allocation rate adaptation SINR evolution muhi-beamsatellite system

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A Congestion Control Mechanism of Streaming Media Transmission

A Congestion Control Mechanism of Streaming Media Transmissi...

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第一届建立和谐人机环境联合学术会议（HHME2005）

作者： Wang, X.G School of Information Science and Technology East China Univ. of Politics and Law Shanghai 200042 China

An adaptive layered multicast congestion control mechanism named TFAMCC is presented, which connects the source with its receivers to handle the congestion control problems arising from streaming medi

关键词： Layered multicast Congestion control rate adaptation TCP-friendliness

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