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Capacity analysis of wireless ad hoc networks with improved channel reservation

机译：具有改进的信道保留的无线自组织网络的容量分析

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摘要

In ad hoc networks, interference is an important factor limiting the network capacity. Imposing a reservation zone around each receiver has been widely considered to mitigate the interference. A larger reservation zone can decrease the interference, but it also lowers the spatial reuse for reduced simultaneous transmissions. Therefore, there exists an optimal reservation zone to maximize the network capacity. In this paper, rate adaptation is brought to improve the channel reservation scheme, and network capacity achieved by jointly optimizing the data rate and reservation zone is investigated for spread-spectrum (SS) ad hoc networks. Compared to the transmission capacity with fixed data rate assumption, analytical and numerical results show that network capacity can be significantly improved, and the capacity gain remains constant in the order of 300% for direct sequence (DS) SS networks and increases with the growing spreading factors in the range of 300-800% for frequency hopping (FH) SS networks.
机译：在ad hoc网络中，干扰是限制网络容量的重要因素。已经广泛考虑在每个接收器周围设置保留区以减轻干扰。较大的保留区可以减少干扰，但同时也降低空间复用，以减少同步传输。因此，存在一个最佳的预留区域来最大化网络容量。本文提出了速率自适应技术，以改进信道预留方案，并研究了通过联合优化数据速率和预留区域而实现的网络容量，用于扩展频谱（SS）ad hoc网络。与固定数据速率假设下的传输容量相比，分析和数值结果表明，网络容量可以得到显着提高，对于直接序列（DS）SS网络，容量增益保持恒定在300％左右，并且随着扩展的增加而增加跳频（FH）SS网络的相关系数在300-800％的范围内。

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