碰撞约束和非理想感知下认知多址接入信道的有效吞吐量

doi:10.11959/j.issn.1000-0801.2015256

Telecommunications Science ›› 2015, Vol. 31 ›› Issue (12): 64-69.doi: 10.11959/j.issn.1000-0801.2015256

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Effective Throughput of Cognitive Multiple Access Channel Under Collision Constraints and Imperfect Sensing

Zhengying Xiao,Xianzhong Xie,Senlin Zhang

Institute of Personal Communications, Chongqing University of Posts and Telecommunications, Chongqing 400065, China

Online:2015-12-20 Published:2017-03-27
Supported by:
The National Natural Science Foundation of China;The National Natural Science Foundation of China;The Science Technology Research Project ofChongqing Science and Technology Commission;The Science Technology Research Project ofChongqing Science and Technology Commission;Research Project of Chongqing University of Posts and Telecommunications;Development Plan of Changjiang Scholars and Innovative Research Team;Special Fund of Key Laboratory of ChongqingScience and Technology Commission（CSTC）

Abstract

Abstract:

The problem of effective throughput of multiple secondary users access to the spectrum of primary user in the cognitive multiple access channel under collision constraints and imperfect channel state information was discussed. Effective throughput was defined and used as the performance metric for secondary users under opportunity spectrum access（OSA）. The channel quality information was considered and limited number of channel samples were used to estimate the parameter of unknown channel quality distribution and the performance of secondary users under imperfect sensing was analyzed. The performance of secondary users under perfect sensing and imperfect sensing was compared by simulations. Moreover, the validity of proposed access strategy was verified by comparing it with other algorithm.

Key words: cognitive radio, multiple access, effective throughput, imperfect channel, channel quality

Zhengying Xiao,Xianzhong Xie,Senlin Zhang. Effective Throughput of Cognitive Multiple Access Channel Under Collision Constraints and Imperfect Sensing[J]. Telecommunications Science, 2015, 31(12): 64-69.

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References 10

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Effective Throughput of Cognitive Multiple Access Channel Under Collision Constraints and Imperfect Sensing

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