arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2201.06023eess.SP
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文本语义通信的资源分配

Resource allocation for text semantic communications

Lei Yan, Zhijin Qin, Rui Zhang, Yongzhao Li, Geoffrey Ye Li

AI总结:

针对语义通信资源分配空白,首次定义语义频谱效率(S-SE),提出资源分配优化方法,并开发转换方法与传统系统公平比较,仿真验证其有效性和优越性。

摘要:

语义通信在提高传输可靠性方面显示出巨大潜力,尤其是在低信噪比区域。然而,语义通信的资源分配问题仍未得到探索,而这是保证语义传输可靠性和通信效率的关键问题。为填补这一空白,我们研究了语义域中的频谱效率,并重新思考了语义感知的资源分配问题。具体而言,以文本语义通信为例,首次定义了语义频谱效率(S-SE),并利用其优化资源分配,包括信道分配和传输语义符号的数量。此外,为了公平比较语义通信系统和传统通信系统,开发了一种转换方法,将传统的基于比特的频谱效率转换为S-SE。仿真结果验证了所提出的资源分配方法的有效性和可行性,以及语义通信在S-SE方面的优越性。

英文摘要:

Semantic communications have shown its great potential to improve the transmission reliability, especially in the low signal-to-noise regime. However, resource allocation for semantic communications still remains unexplored, which is a critical issue in guaranteeing the semantic transmission reliability and the communication efficiency. To fill this gap, we investigate the spectral efficiency in the semantic domain and rethink the semantic-aware resource allocation issue. Specifically, taking text semantic communication as an example, the semantic spectral efficiency (S-SE) is defined for the first time, and is used to optimize resource allocation in terms of channel assignment and the number of transmitted semantic symbols. Additionally, for fair comparison of semantic and conventional communication systems, a transform method is developed to convert the conventional bit-based spectral efficiency to the S-SE. Simulation results demonstrate the validity and feasibility of the proposed resource allocation method, as well as the superiority of semantic communications in terms of the S-SE.

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。

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