具有认知无线电中继的混合蜂窝网络系统容量分析

Chen Liu, Qi Yang, Haowen Wang, Xuemin Hong, Jianghong Shi, Biyu Tang
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引用次数: 2

摘要

混合认知无线电(CR)网络可以联合利用授权和非授权的无线电资源,以获得比纯授权/非授权网络更好的性能。本文研究了由授权基站和非授权CR中继组成的混合蜂窝网络的系统级容量。考虑了两种极限情况,分别假设CR继电器具有无限缓存和无缓存。系统地推导了在不同的干扰和路径损耗简化假设下的系统容量。我们的结果揭示了系统容量如何与各种系统参数(如BS/relay密度、带宽、功率和CR可靠性)相关。这种见解对于规划未来的异构蜂窝网络是有用的。
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System capacity analysis of hybrid cellular networks with cognitive radio relay
Hybrid cognitive radio (CR) networks can jointly utilize both licensed and unlicensed radio resources to gain better performance over pure licensed/unlicensed networks. This paper studies the system-level capacity of a hybrid cellular network that consists of licensed base stations (BSs) and unlicensed CR relays. Two limiting cases are considered, in which the CR relays are assumed to have infinite cache and no cache, respectively. We systematically derive the system capacity under different simplifying assumptions on interference and path loss. Our results reveal how the system capacity is related to various system parameters such as BS/relay density, bandwidth, power, and CR reliability. Such an insight can be useful for the planning of future heterogeneous cellular networks.
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