arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1405.0963cs.ITmath.IT
收藏

多广播信道:降级情况下的定义和容量

Many-Broadcast Channels: Definition and Capacity in the Degraded Case

Tsung-Yi Chen, Xu Chen, Dongning Guo

摘要:

经典的多用户信息论研究了当编码块长度趋于无穷大时,具有固定(通常很小)用户数的模型的基本极限。受新兴的系统与大量的用户,本文研究了新的{ \em多用户范式},其中的用户数量允许增长的块长度。本文的重点是退化的多广播信道模型,其用户数可以快速增长的块长度的线性。定义了以消息长度表示的容量概念,并以高斯衰落多广播信道为例进行了研究。最后,给出了一个高斯衰落多播信道的数值算例,其中每个用户的消息长度渐近地严格为正。

英文摘要:

Classical multiuser information theory studies the fundamental limits of models with a fixed (often small) number of users as the coding blocklength goes to infinity. Motivated by emerging systems with a massive number of users, this paper studies the new {\em many-user paradigm}, where the number of users is allowed to grow with the blocklength. The focus of this paper is the degraded many-broadcast channel model, whose number of users may grow as fast as linearly with the blocklength. A notion of capacity in terms of message length is defined and an example of Gaussian degraded many-broadcast channel is studied. In addition, a numerical example for the Gaussian degraded many-broadcast channel with fixed transmit power constraint is solved, where every user achieves strictly positive message length asymptotically.

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。

↑