扩散分子通信中最佳无CSI检测的SCW码
SCW Codes for Optimal CSI-Free Detection in Diffusive Molecular Communications
摘要：
瞬时或统计信道状态信息（CSI）是分子通信（MC）文献中开发的大多数检测方案所需要的。由于MC信道改变，例如，由于流速、温度或发射器与接收器之间的距离的变化，CSI采集必须重复进行以跟踪CSI变化。频繁的CSI获取可能需要大的开销，而不频繁的CSI获取可能导致低CSI估计质量。为了应对这些问题，我们设计的代码，便于在接收机的最大似然序列检测没有瞬时或统计CSI。特别是，假设浓度移位键控调制，我们表明，一类代码，被称为强恒重（SCW）码，使最佳CSI-免费的序列检测的成本降低的数据率。对于提出的SCW码，我们分析了码率和出错率。仿真结果验证了我们的分析推导，并揭示了所提出的无CSI检测器的SCW码优于基线相干和非相干检测器的未编码传输。
英文摘要：
Instantaneous or statistical channel state information (CSI) is needed for most detection schemes developed in the molecular communication (MC) literature. Since the MC channel changes, e.g., due to variations in the velocity of flow, the temperature, or the distance between transmitter and receiver, CSI acquisition has to be conducted repeatedly to keep track of CSI variations. Frequent CSI acquisition may entail a large overhead whereas infrequent CSI acquisition may result in a low CSI estimation quality. To cope with these issues, we design codes which facilitate maximum likelihood sequence detection at the receiver without instantaneous or statistical CSI. In particular, assuming concentration shift keying modulation, we show that a class of codes, referred to as strongly constant-weight (SCW) codes, enables optimal CSI-free sequence detection at the cost of decreasing the data rate. For the proposed SCW codes, we analyze the code rate and the error rate. Simulation results verify our analytical derivations and reveal that the proposed CSI-free detector for SCW codes outperforms the baseline coherent and non-coherent detectors for uncoded transmission.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
