برمجه ماتلاب ل visible light communication &ACO-OFdm

تطبيق مقاله علميه عن Handover Strategy of Heterogeneous

Network Based on the Dwell Time of

.Communication Blind Area

رسم visible light intensity distribution

Visible light sNr distribution

Visible BER distribution

بالماتلاب

جزء خاص بال handover

handover failure probability

this paper proposes a horizontal-vertical collaborative

switching strategy based on the residency time of the communication blind area. Firstly, we use

asymmetrically clipped optical OFDM (ACO-OFDM) for signal processing to reduce the bit error

rate (BER) of the system by reducing the multipath interference generated during signal

transmission.Secondly, the BER is used to determine the communication blind area and to calculate

its dwell time. Finally, the threshold time is set as the channel interruption time in the

communication blind zone, and the horizontal-vertical cooperative switching is performed by

comparing with the dwell time. The simulation results show that the average network throughput

is 195.28Mbps, and the average number of handovers is 1.35. Compared with instant vertical

handover (IVHO) scheme and dwell vertical handover (DVHO) scheme, the average network

throughput is improved by 37.21% and 28.45%, respectively, and the average switching times are

reduced by 28.05% and 5.27%, respectively.