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首页> 外文期刊>IEEE Transactions on Information Theory >Information-theoretic considerations for symmetric, cellular, multiple-access fading channels. I
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Information-theoretic considerations for symmetric, cellular, multiple-access fading channels. I

机译：对称，蜂窝，多址衰落信道的信息理论考虑。一世

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摘要

A simple idealized linear (and planar) uplink cellular multiple-access communication model, where only adjacent cell interference is present and all signals may experience fading, is considered. Shannon theoretic arguments are invoked to gain insight into the implications on performance of the main system parameters and multiple-access techniques. We specialize to the linear model and address the case of practical importance where the cell-site receiver processes only the signals received at this cell site, and where the actively interfering users assigned to other cells (but not those within the cell) are interpreted as Gaussian noise (worst case assumption). We assume that the cell-site receiver is aware of the instantaneous signal-to-noise ratios for all users assigned to that cell while the users' transmitters do not have access to this side information. We first investigate several different scenarios and focus on the effect of fading and intercell interference and then provide a general formulation for an achievable rate region (inner-bound) of which all the different scenarios are special cases. The features of TDMA and wideband (WB) intracell multiple-access techniques are examined as well as the role of (optimized) fractional intercell time-sharing (ICTS) protocol. The cases of: no fading, fading where intercell interference is not dominant, and fading where intercell interference is present, are discussed.
机译：考虑一种简单的理想化线性（和平面）上行链路蜂窝多址通信模型，该模型中仅存在相邻小区干扰，所有信号都可能出现衰落。调用Shannon理论论证来深入了解主要系统参数和多址技术对性能的影响。我们专门研究线性模型，并解决了具有实际重要性的情况，在这种情况下，蜂窝站点接收器仅处理在此蜂窝站点接收的信号，并且将分配给其他蜂窝（但不是蜂窝内部的那些用户）的活动干扰用户解释为高斯噪声（最坏情况的假设）。我们假设小区站点接收机知道分配给该小区的所有用户的瞬时信噪比，而用户的发射机则无法访问该边信息。我们首先研究几种不同的情况，并着眼于衰落和小区间干扰的影响，然后为所有不同情况都是特殊情况的可达到的速率区域（内边界）提供一般的表述。研究了TDMA和宽带（WB）小区内多址技术的功能，以及（优化的）小区间小分时（ICTS）协议的作用。讨论了以下情况：无衰落，小区间干扰不占主导的衰落和小区间干扰存在的衰落。

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