Randomized Multi-User Strategy for Spectrum Sharing in Opportunistic Spectrum Access Network

Zhongliang Liang, W. Liu, Pan Zhou, Feng Gao
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引用次数: 16

Abstract

In this paper, we consider the problem of opportunistic spectrum access (OSA) for multiple secondary users over multiple channels occupied by primary users whose occupancy state is modeled as discrete-time Markov Process. Taking collisions among secondary users into consideration, we develop a randomized strategy that allows secondary users to seek independently for spectrum opportunities without cooperation, while at the same time maximizing the spectrum utility of the whole system. Our proposed scheme can achieve higher total throughput for all secondary users with no additional message exchange when compared with other similar works. Additionally, our proposed strategy can easily incorporate the spectrum detector in physical layer and interference constraints set by primary users.
机会频谱接入网中随机多用户频谱共享策略
在本文中,我们考虑了多个辅助用户在被主用户占用的多个信道上的机会频谱接入(OSA)问题,其占用状态被建模为离散时间马尔可夫过程。考虑到二次用户之间的冲突,我们开发了一种随机化策略,允许二次用户在不合作的情况下独立寻求频谱机会,同时最大化整个系统的频谱效用。与其他类似方案相比,我们的方案可以在不增加消息交换的情况下为所有辅助用户实现更高的总吞吐量。此外,我们提出的策略可以很容易地结合物理层的频谱检测器和主要用户设置的干扰约束。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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