随着视频和数据传输业务对电缆带宽需求的提高,下行数据速率正在以30%~40%的速率逐年提高。此外,消费者也希望以相同的数据速率使用家中不断增加的互联装置。从长期目标来看,当前采用的模拟下行调制解调器很难满足成本要求。服务提供商还注意到,通过升级改造现有接入平台来满足不断增长的带宽需求的做法非常昂贵。 With the increasing demand for cable bandwidth for video and data transmission services, the downlink data rate is increasing year by year at a rate of 30% to 40%. In addition, consumers also want to use the increasing number of interconnected devices in their homes at the same data rate. In the long-term goal, the current analog downlink modem is difficult to meet the cost requirements. Service providers also note that it can be very expensive to meet the growing bandwidth needs by upgrading existing access platforms.