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文件名称:雷达湍流信号检测算法
文件大小:1.47MB
文件格式:PDF
更新时间:2015-04-30 13:35:31
radar,turbulence
a novel cross-layer framework for optimizing
the dynamic bandwidth allocation (DBA) of a digital video
broadcast (DVB)-return channel satellite (RCS) system using
adaptive coding is proposed. The design of the medium access
control (MAC) methods taking into account the adaptive physical
layer and higher layers’ quality of service (QoS) requirements
is cast as an optimization problem by using the network utility
maximization (NUM) framework applied within the satellite
subnetwork. Hierarchical and global solving procedures fully
compliant with the DVB-RCS standard are proposed. They do not
only provide minimum bandwidth guarantees but also maximize
fairness. Further, they allow a joint optimization of the time slot
size and overall system efficiency while minimizing signalling
overhead. A reduced computational complexity algorithm to solve
the DBA problem is presented. In practical terms, it increases the
number of connections with absolute and relative QoS requirements
the system can manage and facilitates the interoperability of
the satellite network within an Internet protocol (IP) environment.