基于OFDM的广播电视信号发射功率控制方法  

Control Method of Broadcasting TV Signal Based on OFDM

作　　者：叶美授 YE Meishou(Ganzhou 851,Ganzhou,Jiangxi 341000,China)

机构地区：[1]赣州八五一台,江西赣州341000

出　　处：《移动信息》2024年第7期40-42,46,共4页MOBILE INFORMATION

摘　　要：传统的功率控制方法主要根据信道的平均状态或预设参数进行功率调整,在应对信道状态变化时不够灵活,因此文中提出了基于OFDM的广播电视信号发射功率控制方法。其基于OFDM技术将广播电视信号信道划分为多个正交子载波,根据信道条件制定最佳子载波功率分配策略,设计了一个滑模变控制器,并根据制定策略动态调整信号发射功率,实现广播电视信号发射功率控制。实验结果表明,该设计方法能动态调整广播电视信号发射功率,达到预期控制目标。The traditional power control method mainly adjusts the power based on the average state or preset parameters of the channel,which is not flexible enough to cope with changes in channel state.Therefore,this paper proposes a broadcasting and television signal transmission power control method based on OFDM.Based on OFDM technology,it divides the broadcasting and television signal channel into multiple orthogonal subcarriers,formulates the optimal subcarrier power allocation strategy according to channel conditions,designs a sliding mode variable controller,and dynamically adjusts the signal transmission power according to the formulated strategy to achieve broadcasting and television signal transmission power control.The experimental results show that this design method can dynamically adjust the transmission power of broadcasting and television signals,achieving the expected control objectives.

关 键 词：OFDM 广播电视信号 信号发射 发射功率 控制方法 

分 类 号：TN929[电子电信—通信与信息系统]