Non-saturated throughput analysis of IEEE 802.11-based cognitive radio networks

doi:10.1016/S1005-8885(11)60311-7

中国邮电高校学报(英文) ›› 2012, Vol. 19 ›› Issue (6): 6-13.doi: 10.1016/S1005-8885(11)60311-7

Non-saturated throughput analysis of IEEE 802.11-based cognitive radio networks

赵媛¹,金顺福¹,田乃硕²

1. 燕山大学信息科学与工程学院
2. 燕山大学理学院

收稿日期:2012-02-27 修回日期:2012-09-15 出版日期:2012-12-31 发布日期:2012-12-14
通讯作者: 金顺福 E-mail:jsf@ysu.edu.cn
基金资助:
This work was supported by the National Natural Science Foundation of China (71101124, 11201408), the Natural Science Foundation of Heibei Province (2012203093).

Non-saturated throughput analysis of IEEE 802.11-based cognitive radio networks

Received:2012-02-27 Revised:2012-09-15 Online:2012-12-31 Published:2012-12-14
Contact: Shunfu Jin E-mail:jsf@ysu.edu.cn
Supported by:
This work was supported by the National Natural Science Foundation of China (71101124, 11201408), the Natural Science Foundation of Heibei Province (2012203093).

摘要/Abstract

摘要：

Technology of cognitive radio networks has emerged as an effective method to enhance the utilization of the radio spectrum where the primary users have priority to use the spectrum, and the secondary users try to exploit the spectrum unoccupied by the primary users. In this paper, considering the non-saturated condition, the performance analysis for the IEEE 802.11-based cognitive radio networks is presented with single-channel and multi-channel, respectively. For the single-channel case, an absorbing Markov chain model describing the system transitions is constructed, and one-step transition probability matrix of the Markov chain is given. By using the method of probability generating function, the non-saturated throughput of the secondary users is obtained. For the multi-channel case, taking into account the negotiation-based sensing policy, the mean number of unused channels perceived by the second users is given, and then the non-saturated aggregate throughput of the secondary users is derived. Finally, numerical examples are provided to show the influences of the non-saturated degree, the number of the secondary users and the channel utilization of the primary users on the performance measures for the non-saturated throughput with single-channel and the non-saturated aggregate throughput with multi-channel.

关键词:

cognitive radio networks, IEEE 802.11, non-saturated throughput, absorbing Markov chain, probability generating function

Abstract:

Key words:

cognitive radio networks, IEEE 802.11, non-saturated throughput, absorbing Markov chain, probability generating function

中图分类号:

TP393.1

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Non-saturated throughput analysis of IEEE 802.11-based cognitive radio networks

Non-saturated throughput analysis of IEEE 802.11-based cognitive radio networks

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