计算机工程与应用
計算機工程與應用
계산궤공정여응용
COMPUTER ENGINEERING AND APPLICATIONS
2014年
14期
100-102,218
,共4页
正交幅度调制(QAM)%完美序列%几乎完美序列%自相关值%能量效率
正交幅度調製(QAM)%完美序列%幾乎完美序列%自相關值%能量效率
정교폭도조제(QAM)%완미서렬%궤호완미서렬%자상관치%능량효솔
Quadrature Amplitude Modulation(QAM)%perfect sequences%almost perfect sequences%autocorrelation val-ues%energy efficiency
针对调制解调方式的高效性，提出低自相关值的16-QAM序列，使用完美的二元序列构造完美的4-QAM序列，基于完美的4-QAM序列构造完美的16-QAM序列，对所构造的完美16-QAM序列的能量效率进行分析，提出用完美的4-QAM序列和交织结构构造几乎完美的16-QAM序列，并给出了相应条件。
針對調製解調方式的高效性，提齣低自相關值的16-QAM序列，使用完美的二元序列構造完美的4-QAM序列，基于完美的4-QAM序列構造完美的16-QAM序列，對所構造的完美16-QAM序列的能量效率進行分析，提齣用完美的4-QAM序列和交織結構構造幾乎完美的16-QAM序列，併給齣瞭相應條件。
침대조제해조방식적고효성，제출저자상관치적16-QAM서렬，사용완미적이원서렬구조완미적4-QAM서렬，기우완미적4-QAM서렬구조완미적16-QAM서렬，대소구조적완미16-QAM서렬적능량효솔진행분석，제출용완미적4-QAM서렬화교직결구구조궤호완미적16-QAM서렬，병급출료상응조건。
In view of enhancing the modulation efficiency of communication system, the 16-QAM sequences having low auto-correlation values are proposed, and the perfect 4-QAM sequences are constructed by the perfect binary sequences, and the perfect 16-QAM sequences based on the perfect 4-QAM sequences are constructed. In addition, the energy effi-ciency of the constructed perfect 16-QAM sequences is analyzed. A new construction of almost perfect 16-QAM sequences by using the perfect 4-QAM sequences and interleaved structures is provided, and the corresponding condition is presented.
