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arXiv 0706.1399cs.ITmath.IT
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多速率广播多址网络的对偶性和稳定域

Duality and Stability Regions of Multi-rate Broadcast and Multiple Access Networks

Viveck R. Cadambe, Syed A. Jafar

摘要:

我们的特点稳定区域的两个用户衰落高斯多址接入(MAC)和广播(BC)网络与集中式调度。要发送给用户的数据被编码成固定长度的码字。所使用的码字的速率被限制到有限基数的固定集合。随着连续解码和干扰消除在接收机,我们发现的到达率,可以稳定在MAC和BC网络。在平均功率约束的MAC和BC网络中,我们观察到,与MAC和BC信息理论容量区域相关的对偶性也扩展到它们的稳定区域。在具有峰值功率约束的MAC网络和BC网络中,发现双MAC网络的稳定域的并集严格包含在BC稳定域中。

英文摘要:

We characterize stability regions of two-user fading Gaussian multiple access (MAC) and broadcast (BC) networks with centralized scheduling. The data to be transmitted to the users is encoded into codewords of fixed length. The rates of the codewords used are restricted to a fixed set of finite cardinality. With successive decoding and interference cancellation at the receivers, we find the set of arrival rates that can be stabilized over the MAC and BC networks. In MAC and BC networks with average power constraints, we observe that the duality property that relates the MAC and BC information theoretic capacity regions extend to their stability regions as well. In MAC and BC networks with peak power constraints, the union of stability regions of dual MAC networks is found to be strictly contained in the BC stability region.

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