地面无线数字电视系统传输覆盖策略分析

Analysis of Ground Wireless Digital Television Transmission Coverage Strategy

地面无线数字电视系统传输覆盖方式与卫星数字电视相比,成本更低,更容易推广普及;与有线数字电视传输覆盖技术相比,不需要进行大量线路的敷设,也不会受到城市建设工程项目以及自然因素的影响。但地面无线数字电视传输覆盖方式也存在很多缺陷,例如会受到建筑物遮挡干扰,覆盖范围、频率规划以及接收方式的技术难度较大。如果能够找到更加高效的传输覆盖方式,有效处理好上述问题,必然能够推动地面数字电视的发展。为此,就地面无线数字电视系统传输覆盖策略进行分析。

The ground wireless digital television transmission coverage and satellite digital TV compared,lower cost,easy popularization;Transmission and cable digital television coverage mode,it does not need to set up a large number of lines,not affected by city construction or natural disasters.But the ground wireless digital television transmission coverage also has many defects,such as said by building block interference,coverage, frequency planning and technical difficulty receiving mode is larger,if we can find a more efficient way of transmission coverage,effectively deal with these problems,must be able to promote the development of terres-trial digital TV.Based on this,this paper on this issue was discussed.