重庆邮电大学学报（自然科学版）
重慶郵電大學學報（自然科學版）
중경유전대학학보（자연과학판）
JOURNAL OF CHONGQING UNIVERSITY OF POSTS AND TELECOMMUNICATIONS(NATURAL SCIENCE EDITION)
2007年
4期
458-460
,共3页
码分多址%贝叶斯信道估计%联合检测%加权系数
碼分多阯%貝葉斯信道估計%聯閤檢測%加權繫數
마분다지%패협사신도고계%연합검측%가권계수
CDMA%Bayesian channel estimation%joint detection%weight coefficient
分析了CDMA时分模式下的统计贝叶斯信道估计.通过理论分析得到了简化的贝叶斯信道估计权值,其等同将后向概率的最大化.提出了一种综合贝叶斯估计和门限的改进方法.计算机仿真结果表明不仅提高了信道估计精度,而且保持了较低的计算复杂度.
分析瞭CDMA時分模式下的統計貝葉斯信道估計.通過理論分析得到瞭簡化的貝葉斯信道估計權值,其等同將後嚮概率的最大化.提齣瞭一種綜閤貝葉斯估計和門限的改進方法.計算機倣真結果錶明不僅提高瞭信道估計精度,而且保持瞭較低的計算複雜度.
분석료CDMA시분모식하적통계패협사신도고계.통과이론분석득도료간화적패협사신도고계권치,기등동장후향개솔적최대화.제출료일충종합패협사고계화문한적개진방법.계산궤방진결과표명불부제고료신도고계정도,이차보지료교저적계산복잡도.
The statistical Bayesian channel estimation was investigated in the CDMA TDD mode. The Bayesian estimation is derived through statistical analysis and it is shown to be equivalent to the maximization of the a Posteriori Probability. A modified approach to combine the Bayesian estimation and the hard gating is proposed. Simulation results demonstrate that it improves the estimation accuracy and keeps low computational complexity.
