packet error rate短语¹⁴⁴⁹⁷²⁺² 基本例句 包出错率 Extensive simulations have verified that, even with high packet error rate, the proposed scheme may achieve efficient and robust video broadcasting over DTTB systems. 仿真结果表明，本文提出的算法即使在很高的数据差错率情况下，仍然可以实现地面数字电视广播系统中可靠而高效的视频传输。 cnki