We consider a communication scenario over a discrete memoryless interference channel or multiple access channel without feedback, where transmitters exploit classical, quantum, or no-signaling cooperation. In this scenario, several previous works have shown that the sum capacities of channels involving pseudo-telepathy games can be enhanced by quantum or no-signaling cooperation. However, a full characterization of which channels admit such an improvement remains open. By focusing on the common characteristics of previously studied channels, we propose a broader class of channels for which quantum or no-signaling cooperation increases the sum capacity. Channels in this class are associated with a pseudo-telepathy game, with channel inputs specified as tuples of questions and answers from the game. In addition, when the channel inputs satisfy the winning condition of the game, the channel decomposes into parallel weakly symmetric sub-channels and is less noisy compared to the case when the inputs do not meet the winning condition.

翻译：本文研究离散无记忆干扰信道或多址接入信道（无反馈）中的通信场景，其中发射机利用经典、量子或非信号协作。已有研究表明，涉及伪心灵感应博弈的信道可通过量子或非信号协作提升和容量，但何种信道允许此类改进尚未完全明确。通过聚焦于已有研究中信道的共同特征，我们提出了一类更广泛的信道，其和容量可通过量子或非信号协作提高。此类信道与伪心灵感应博弈相关联，信道输入被定义为博弈中问题与答案的元组。此外，当信道输入满足博弈获胜条件时，信道可分解为并行的弱对称子信道，且相较于输入不满足获胜条件的情况具有更低的噪声。