通信技术
通信技術
통신기술
COMMUNICATIONS TECHNOLOGY
2015年
8期
880-885
,共6页
徐洋%郭明喜%沈越泓%段昊%张胜
徐洋%郭明喜%瀋越泓%段昊%張勝
서양%곽명희%침월홍%단호%장성
超Nyquist码元速率传输%低复杂度%迭代分组判决反馈均衡器
超Nyquist碼元速率傳輸%低複雜度%迭代分組判決反饋均衡器
초Nyquist마원속솔전수%저복잡도%질대분조판결반궤균형기
Faster-than-Nyquist%low complextiy%IBDFE
超Nyquist码元速率( FTN)理论的出现为提高通信系统数据传输速率奠定了基础。但是, FTN是以引入码间串扰( ISI )增加通信设备特别是接收机复杂度为代价的。为了降低接收机复杂度,在意大利著名学者N. Benvenuto和S. Tomasin 2014年给出迭代分组判决反馈均衡器( IBDFE)方法的基础上,提出了一种低复杂度的频域迭代分组判决反馈均衡器( LC-IBDFE )。仿真结果表明,LC-IBDFE在性能上与IBDFE近似。但是在经过2次迭代后,LC-IBDFE复杂度降低约11.7%;经过3次迭代后,复杂度降低约27.6%。
超Nyquist碼元速率( FTN)理論的齣現為提高通信繫統數據傳輸速率奠定瞭基礎。但是, FTN是以引入碼間串擾( ISI )增加通信設備特彆是接收機複雜度為代價的。為瞭降低接收機複雜度,在意大利著名學者N. Benvenuto和S. Tomasin 2014年給齣迭代分組判決反饋均衡器( IBDFE)方法的基礎上,提齣瞭一種低複雜度的頻域迭代分組判決反饋均衡器( LC-IBDFE )。倣真結果錶明,LC-IBDFE在性能上與IBDFE近似。但是在經過2次迭代後,LC-IBDFE複雜度降低約11.7%;經過3次迭代後,複雜度降低約27.6%。
초Nyquist마원속솔( FTN)이론적출현위제고통신계통수거전수속솔전정료기출。단시, FTN시이인입마간천우( ISI )증가통신설비특별시접수궤복잡도위대개적。위료강저접수궤복잡도,재의대리저명학자N. Benvenuto화S. Tomasin 2014년급출질대분조판결반궤균형기( IBDFE)방법적기출상,제출료일충저복잡도적빈역질대분조판결반궤균형기( LC-IBDFE )。방진결과표명,LC-IBDFE재성능상여IBDFE근사。단시재경과2차질대후,LC-IBDFE복잡도강저약11.7%;경과3차질대후,복잡도강저약27.6%。
The existence of FTN ( Faster Than Nyquist) theory lays the foundation for increasing data trans-mission rate of communication system and however, FTN is at the expenses of introducing ISI ( Inter-Sym-bol Interference) and thus increasing the complexity of communication devices, especially the complexity of receivers. In order to reduce the complexity of receivers and based on IBDFE ( Iterative Block Decision Feedback Equalization) proposed by the famous Italian scholars, N. Benvenuto and S. Tomasin in 2014, LC-IBDFE ( Low-Complexity Iterative Block Decision Feedback Equalization) is proposed. Simulation re-sults indicate that the proposed LC-IBDFE is similar to IBDFE in performance, while the complexity is re-duced by about 11. 7% and 27. 6% respectively after 2 or 3 iterations respectively.