计算机应用与软件
計算機應用與軟件
계산궤응용여연건
COMPUTER APPLICATIONS AND SOFTWARE
2014年
5期
110-113
,共4页
多输入多输出(MIMO)%PMI%多点协作%轮询调度
多輸入多輸齣(MIMO)%PMI%多點協作%輪詢調度
다수입다수출(MIMO)%PMI%다점협작%륜순조도
MIMO%PMI%Multi-cell coordination%Round robin
针对LTE通信系统中小区间干扰,给出多点协作情况下基于预编码矩阵索引反馈(PMI )的小区间干扰弱化方案。干扰弱化方案采用基于码本的预编码技术,接收机选用最小均方差(MMSE)设计,干扰小区间采用轮询调度算法。仿真结果表明,引入PMI反馈协调方案后,多点协作系统中每个用户的平均频谱利用率明显提高,小区间干扰得到有效的抑制。
針對LTE通信繫統中小區間榦擾,給齣多點協作情況下基于預編碼矩陣索引反饋(PMI )的小區間榦擾弱化方案。榦擾弱化方案採用基于碼本的預編碼技術,接收機選用最小均方差(MMSE)設計,榦擾小區間採用輪詢調度算法。倣真結果錶明,引入PMI反饋協調方案後,多點協作繫統中每箇用戶的平均頻譜利用率明顯提高,小區間榦擾得到有效的抑製。
침대LTE통신계통중소구간간우,급출다점협작정황하기우예편마구진색인반궤(PMI )적소구간간우약화방안。간우약화방안채용기우마본적예편마기술,접수궤선용최소균방차(MMSE)설계,간우소구간채용륜순조도산법。방진결과표명,인입PMI반궤협조방안후,다점협작계통중매개용호적평균빈보이용솔명현제고,소구간간우득도유효적억제。
Aiming at inter-cell interference in LTE communication system,a scheme of inter-cell interference mitigation based on precoding matrix index (PMI)under the condition of multi-cell coordination is proposed.The precoding technique based on codebook is used in the scheme,minimal mean-squared error (MMSE)algorithm is adopted in receiver’s design,and the round robin scheduling method is used in the inter-cell of interference.Simulation results show that each user’s average spectrum utilisation improves apparently after the PMI feedback coordination scheme is imported,and the inter-cell interference have been suppressed effectively.