新型工业化
新型工業化
신형공업화
New Industrialization Straregy
2012年
7期
1-10
,共10页
协作通信%机会中继%多中继%最优功率分配%虚拟MIMO
協作通信%機會中繼%多中繼%最優功率分配%虛擬MIMO
협작통신%궤회중계%다중계%최우공솔분배%허의MIMO
cooperative communication%opportunistic relaying%multiple relaying%optimal power allocation%virtual MIMO
本文对协作通信中采用机会中继和多中继两种方案下的系统性能进行了分析比较，在讨论多中继时考虑了中继节点间平均分配发射功率和根据最优原理分配发射功率这两种功率分配方式。对比两者性能时，考虑了接收端是多天线情况，并且在讨论接收端是多天线情况下的机会中继时，采用的是最优功率分配算法来选取最优中继节点。通过理论分析结合蒙特卡罗仿真对比，得到协作系统采取机会中继和多中继这两种中继方案下，多中继方案的系统性能优于机会中继方案，这与当接收端是单天线时，机会中继要好于多中继的性能结论[1]正好相反。
本文對協作通信中採用機會中繼和多中繼兩種方案下的繫統性能進行瞭分析比較，在討論多中繼時攷慮瞭中繼節點間平均分配髮射功率和根據最優原理分配髮射功率這兩種功率分配方式。對比兩者性能時，攷慮瞭接收耑是多天線情況，併且在討論接收耑是多天線情況下的機會中繼時，採用的是最優功率分配算法來選取最優中繼節點。通過理論分析結閤矇特卡囉倣真對比，得到協作繫統採取機會中繼和多中繼這兩種中繼方案下，多中繼方案的繫統性能優于機會中繼方案，這與噹接收耑是單天線時，機會中繼要好于多中繼的性能結論[1]正好相反。
본문대협작통신중채용궤회중계화다중계량충방안하적계통성능진행료분석비교，재토론다중계시고필료중계절점간평균분배발사공솔화근거최우원리분배발사공솔저량충공솔분배방식。대비량자성능시，고필료접수단시다천선정황，병차재토론접수단시다천선정황하적궤회중계시，채용적시최우공솔분배산법래선취최우중계절점。통과이론분석결합몽특잡라방진대비，득도협작계통채취궤회중계화다중계저량충중계방안하，다중계방안적계통성능우우궤회중계방안，저여당접수단시단천선시，궤회중계요호우다중계적성능결론[1]정호상반。
In this paper, we analyzed and compared the system performance of opportunistic and multiple relaying based on cooperative communication. When discussing multiple relaying, we considered two kinds of power allocation schemes: equal power allocation and optimal power allocation among relay nodes. When comparing performance of those two schemes, we also considered the following scenarios:single antenna and multiple antennas at the destination. In the case of multiple antennas at the destination, we use optimal power allocation algorithm to select the best relay node for opportunistic relaying. By theoretical analysis and Monte Carlo simulation comparison, performance of multiple relaying under the scenario of multiple antennas at the destination outperforms opportunistic relaying. The result is opposite from the scenario of single antenna at the destination.
