分布式虛擬群小區(qū)中的接入控制
Admission Control in Distributed Virtual Group Cell Systems
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摘要: 分布式多天線結(jié)構(gòu)的虛擬群小區(qū)系統(tǒng)成為未來(lái)無(wú)線系統(tǒng)的一種解決方案。該系統(tǒng)具有靈活的組織結(jié)構(gòu)，在增加頻譜效率、提高通信質(zhì)量上具有巨大潛力，并且能為各種新技術(shù)的采用提供廣闊的發(fā)展空間。該文采用Markov鏈逼近的方法分析多天線情況下虛擬群小區(qū)系統(tǒng)的系統(tǒng)性能，對(duì)于基于干擾的接入控制策略下的系統(tǒng)阻塞率，切換失敗率等給出了數(shù)值結(jié)果。研究結(jié)果表明分布式多天線系統(tǒng)有效地提高了上行系統(tǒng)性能。
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關(guān)鍵詞:
- 無(wú)線通信; 分布式; 多天線; 虛擬群小區(qū); 接入控制
Abstract: Distributed virtual group cell systems become a possible solution for future wireless communication systems, which has flexible structure and huge potential in terms of increasing spectrum efficiency and improving quality of communications. In this paper, a Markov model is adopted to analyze the performance of multi-antenna based virtual group cell systems. Numerical results, such as blocking probability, handoff failure probability etc., are given with interference-based admission control algorithm. The investigation shows that the uplink performance of this system can be improved greatly. -
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