注水算法是根据某种准则， 并根据信道状况对发送功率进行自适应分配， 通常是信道状
况好的时刻， 多分配功率， 信道差的时候， 少分配功率， 从而最大化传输速率。 实现功率的“注水” 分配， 发送端必须知道 CSI(The waterflooding algorithm is based on some criteria and adaptively allocates the transmission power according to the channel condition, usually the channel condition.
In good condition, when there is more power allocation and channel difference, there is less power allocation to maximize transmission rate. Realizing power
For water injection allocation, the sender must know CSI)