信息与控制
信息與控製
신식여공제
INFORMATION AND CONTROL
2010年
2期
247-251
,共5页
贾龙真%李兆训%崔维嘉%赵阳
賈龍真%李兆訓%崔維嘉%趙暘
가룡진%리조훈%최유가%조양
分布式MIMO%空时编码%迭代检测
分佈式MIMO%空時編碼%迭代檢測
분포식MIMO%공시편마%질대검측
distributed MIMO%space-time coding%iterative detection
针对未来无线通信系统中广义分布式天线阵的架构,提出了一种适用于分布式多输入多输出(MIMO)系统的LST-STBC空时编码方案.该方案通过具有差错控制编码的分层空时(LST)结构与基于正交设计的分组空时码(STBC)的有效结合,同时获得了分集和复用增益.针对提出的空时编码结构,接收端采用基于软干扰抵消和最小均方误差(MMSE)的迭代检测算法,通过检测和译码软信息的迭代,有效降低了系统的误码率.仿真结果表明,文中提出的基于接收端迭代检测的空时编码方案能有效提高分布式MIMO系统的传输速率和传输质量.
針對未來無線通信繫統中廣義分佈式天線陣的架構,提齣瞭一種適用于分佈式多輸入多輸齣(MIMO)繫統的LST-STBC空時編碼方案.該方案通過具有差錯控製編碼的分層空時(LST)結構與基于正交設計的分組空時碼(STBC)的有效結閤,同時穫得瞭分集和複用增益.針對提齣的空時編碼結構,接收耑採用基于軟榦擾牴消和最小均方誤差(MMSE)的迭代檢測算法,通過檢測和譯碼軟信息的迭代,有效降低瞭繫統的誤碼率.倣真結果錶明,文中提齣的基于接收耑迭代檢測的空時編碼方案能有效提高分佈式MIMO繫統的傳輸速率和傳輸質量.
침대미래무선통신계통중엄의분포식천선진적가구,제출료일충괄용우분포식다수입다수출(MIMO)계통적LST-STBC공시편마방안.해방안통과구유차착공제편마적분층공시(LST)결구여기우정교설계적분조공시마(STBC)적유효결합,동시획득료분집화복용증익.침대제출적공시편마결구,접수단채용기우연간우저소화최소균방오차(MMSE)적질대검측산법,통과검측화역마연신식적질대,유효강저료계통적오마솔.방진결과표명,문중제출적기우접수단질대검측적공시편마방안능유효제고분포식MIMO계통적전수속솔화전수질량.
A scheme of LST-STBC space-time coding is proposed for distributed multiple input multiple output (MIMO) system in generalized distributed antenna array architecture of the future wireless communication system. The combination between layered space-time (LST) architecture with error control coding and space-time block codes (STBC) based on orthogonal design in the scheme obtains diversity and multiplexing gains synchronously. As the proposed structure of space-time coding, the iterative detection algorithm based on the soft interference cancellation with minimum mean squared error (MMSE) is employed in the receiver. The soft information exchanged iteratively between detector and decoder decreases bits error rate successfully. The simulation results manifest that the proposed space-time coding scheme based on iterative detection algorithm in the receiver improves transmission rate and quality of the distributed MIMO system efficiently.