The third, financial derivative transactions were just started with simplex investment channel for the worldwide market. 再次是金融衍生品交易刚刚在美国开始,就全球来说投资渠道相对单一。
In implementation, fountain codes adopt a simplex mechanism of asynchronous transfer, which possesses high-efficiency and low-delay, adapts the time-variant of channel easily. 在实现上,它采用的是一种单向异步传输机制,具有低延迟、高效的特性,对时变信道有很强的适应能力。