中文说明：在不进行保密交换的情况下，收发双方都通过估计上下行信道的信道条件来生成密钥，该算法采用量化方法。上行链路和下行链路信道被假定为相互的。
English Description：
transmitter and receiver both generate keys by estimating the channel conditions of uplink and downlink channel without secrecy exchange, quantization method is used in this algorithm. Uplink and downlink channel are assumed to be reciprocal. both key match rate and key length are calculated in this algorithm.