Feedback is shown to increase the sum-rate capacity of K-user Gaussian multiple-access channels by at most a factor of approximately 1.54, improving Thomas' doubling bound (1987). The new bound is the best possible in the sense that it can be approached as closely as desired for a massive number of users. Moreover, feedback provides unbounded power gain in K for a fixed transmit power per user.

翻译：反馈显示,K用户Gaussian多重接入渠道的总容量最多增加约1.54倍,使Thomas的连接率翻一番(1987年),新连接是最好的,因为可以与大量用户一样接近。此外,反馈为每个用户的固定传输电源提供了无限制的K电源增益。