ID	原文	译文
54177	降低语音落差，改善听觉感受。	The method can reduce the sound drop and improve the auditory experience.
54178	短距离通信是物联网中常用的通信方式，多是一传感节点对多物理节点的情形，	In Internet of thing, short-range communication is a common communication system, where a sensor node will collect signals from multiple physical nodes.
54179	由于其采用无线共享信道，因此多个信源一起传输必然导致冲突发生。	Because the system uses a wireless shared channel, signal transmissions together from multiple sources will cause collision.
54180	通常，多信源冲突采用MAC协议随机多址方法解决，由于其通信机制是一旦冲突发生，则会重传，所以通信效率并不高。	Usually, the collision is resolved by a random multiple access method, but the communication efficiency is not high.
54181	采用信号分离和编解码技术可直接从冲突信号中恢复出信源，因此可显著提高通信效率，	Signal separation and coding technology can directly recover the source from the collision signals, so it can significantly improve the communication efficiency.
54182	但该方法需要预知或估计信号衰落系数才能保证良好的性能。	However, the method requires predicting or estimating signal fading coefficients to ensure good performance.
54183	本文提出一种有限符号分离的维特比解码方法，该方法通过估计字典矩阵，无需预知衰落系数就能准确提高恢复冲突信号。	This paper proposes a Viterbi decoding method with finite symbol separation, which can accurately recover the collision signal without the fading coefficients, through estimating the dictionary matrix.
54184	实验中，我们分别用仿真和软件无线电构建了一个基于FM0码的超高频短距离无线通信系统，	In the experiment, we establish two ultra-high frequency short-range wireless communication system based on FM0 code, using simulation and software radio, respectively.
54185	实验结果表明本文提出的方法吞吐量达到了约0.61，相比传统的ALOHA系统吞吐量提高了约0.25。	The experimental results show that the throughput of the proposed method arrives at about 0. 61, which improves the traditional ALOHA system by bout 0. 25.
54186	相推测速技术可以实现相位量级的测量精度，但是其存在准确提取相位和解相位模糊两大难点。	Phase-derived velocity measurement(PDVM) can obtain phase level measurement accuracy, but there are two difficulties in extracting the echo phase and resolving the phase ambiguity.