Considering that the collision caused by hidden terminal is particularly serious due to the narrow beams of optical de- vices, the multi-packet reception （MPR） is introduced to mitigate the collisions for IEEE 802.1...Considering that the collision caused by hidden terminal is particularly serious due to the narrow beams of optical de- vices, the multi-packet reception （MPR） is introduced to mitigate the collisions for IEEE 802.15.7 visible light com- munication （VLC） system. To explore the impact of MPR on system performance and investigate the interaction be- tween physical （PHY） layer and media access control （MAC） layer, a three dimensional （3D） integrated PHY-MAC analytical model of carrier sense muttiple access/collision avoidance （CSMA/CA） is established based on Markov chain theory for VLC system, in which MPR is implemented through the use of orthogonal code sequence. Throughput is derived to evaluate the performance of VLC system with MPR capability under imperfect optical channel. The re- sults can be used for the performance optimization of a VLC system with MPR capability.展开更多
基金supported by the National Natural Science Foundation of China(No.61071074)Jilin Provincial Science&Technology Department of China(No.20130413052GH)
文摘Considering that the collision caused by hidden terminal is particularly serious due to the narrow beams of optical de- vices, the multi-packet reception （MPR） is introduced to mitigate the collisions for IEEE 802.15.7 visible light com- munication （VLC） system. To explore the impact of MPR on system performance and investigate the interaction be- tween physical （PHY） layer and media access control （MAC） layer, a three dimensional （3D） integrated PHY-MAC analytical model of carrier sense muttiple access/collision avoidance （CSMA/CA） is established based on Markov chain theory for VLC system, in which MPR is implemented through the use of orthogonal code sequence. Throughput is derived to evaluate the performance of VLC system with MPR capability under imperfect optical channel. The re- sults can be used for the performance optimization of a VLC system with MPR capability.
