标题： 可实现速率分析在具有重置计数完全吸收接收器的分子信道中 显示英文标题

标题： Achievable Rate Analysis in Molecular Channels with Reset-Counting Fully Absorbing Receivers

摘要： 在本文中，我们研究了具有完全吸收接收器的扩散分子通信（MC）信道的可实现速率，该接收器在每个符号间隔内统计被吸收的粒子数并在每个间隔结束时重置计数器（重置计数）。 MC信道受到记忆效应的影响，因此由于分子的延迟到达而产生符号间干扰（ISI）。 为了降低复杂性，我们的分析基于将信道记忆测量为整数个符号间隔，并使用单样本无记忆检测器。 因此，在我们的模型中，释放的粒子的影响仅在有限数量的符号间隔内有效。 我们优化检测器阈值以最大化容量，将接收到的信号分布近似为高斯分布，并在二进制浓度移相键控调制的情况下计算受 ISI 影响的信道互信息。 据我们所知，文献中尚未有对此类系统可实现速率的先前研究。 我们的结果表明，一般来说，实现最大可实现速率的最优输入概率分布可能不是均匀的。 特别是当符号间隔较小时（强 ISI），最大可实现速率不会出现在比特等概率传输的情况下。 显示英文摘要

摘要： In this paper, we investigate the achievable rate of a diffusive Molecular Communication (MC) channel with fully absorbing receiver, which counts particles absorbed along each symbol interval and resets the counter at every interval (reset-counting). The MC channel is affected by a memory effect and thus inter-symbol interference (ISI), due to the delayed arrival of molecules. To reduce complexity, our analysis is based on measuring the channel memory as an integer number of symbol intervals and on a single-sample memoryless detector. Thus, in our model the effect of released particles remains effective for a limited number of symbol intervals. We optimize the detector threshold for maximizing capacity, approximate as Gaussian the received signal distribution, and calculate the channel mutual information affected by ISI, in the case of binary concentration shift keying modulation. To the best of our knowledge, in literature there are no previous investigations on the achievable rate in this type of system. Our results demonstrate that, in general, the optimal input probability distribution achieving the maximum achievable rate may be not uniform. In particular, when the symbol interval is small (strong ISI), the maximum achievable rate does not occur with equiprobable transmission of bits.