高斯X信道在噪声干扰下的和容量

Sum capacity of Gaussian X channels with noisy interference

通过分析高斯X信道的和容量,得到了该信道处于噪声干扰下的充分条件.将辅助向量和辅助集合作为边信息提供给接收端,得到了一个和速率上界.在所提出的噪声干扰条件下,该和速率上界可通过将X信道退化成潜在的干扰信道,并把干扰当作噪声处理的方法达到,从而得到了该信道在噪声干扰下的和容量.

If the sum capacity of a channel can be achieved by treating interference as noise,we say that this channel is under noisy interference.By analyzing the sum capacity of Gaussian X channels,sufficient conditions for such channels under noisy interference are proposed.Providing vector genies and auxiliary sets as side information to the receivers,a sum-rate upper bound is obtained.Under the noisy interference sufficient conditions,this sum-rate upper bound can be achieved by operating the original channel as the underlying Gaussian interference channel and treating interference as noise.Therefore,the sum capacity of the Gaussian X channel is determined for noisy interference.