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高阶数据调制比特软输出的递归计算方法

潘文 尤肖虎

潘文, 尤肖虎. 高阶数据调制比特软输出的递归计算方法[J]. 电子与信息学报, 2006, 28(6): 1111-1114.
引用本文: 潘文, 尤肖虎. 高阶数据调制比特软输出的递归计算方法[J]. 电子与信息学报, 2006, 28(6): 1111-1114.
Pan Wen, You Xiao-hu. The Recursive Calculation Method of Bit Soft Output[J]. Journal of Electronics & Information Technology, 2006, 28(6): 1111-1114.
Citation: Pan Wen, You Xiao-hu. The Recursive Calculation Method of Bit Soft Output[J]. Journal of Electronics & Information Technology, 2006, 28(6): 1111-1114.

高阶数据调制比特软输出的递归计算方法

The Recursive Calculation Method of Bit Soft Output

  • 摘要: 该文设计了一种通过把低阶PAM(QAM)星座图递归排列形成高阶调制的星座图,这种星座图与原信号的关系仍为Gray映射,即相邻两星座点的映射比特序列仅相差1bit。另外高阶调制的比特软输出计算比较复杂,对每一种阶数的调制需要各自的公式计算。研究结果表明高阶调制的比特软输出可以通过低阶调制递归计算得出。只需计算二进制调制方式,就可计算出任意的高阶调制的比特软输出。从而可降低复杂度。仿真表明上述方法简化了高阶调制软信息的计算。
  • Goff S L, Glavieux A, Berrou C. Turbo-codes and high spectral efficiency modulation. IEEE ICC94, New Orleans, 1994: 645-649.[2]Berrou C, Glavieux A. Near optimum error correcting coding and decoding: Turbo-codes. IEEE Trans. on Commun., 1996, COM-44(10): 1261-1271.[3]Hagenauer S, Offer E, Papke L. Iterative decoding of binary block and convolutional codes. IEEE Trans. on Information Theory, 1996 42(2): 429-445.[4]Nordio A, Hernandez M A, Caire G. Low-complexity turbo equalization and multiuser decoding for TD-CDMA. IEEE Trans. on Commun., 2004 3(2): 454-465.[5]Yeo E, Nikolic B, Anantharam V. Iterative decoder architectures. IEEE Communications Magazine, 2003, 41(8): 132-140.[6]IEEE Std 802.11a/D7.0-1999, Part II: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications: High Speed Physical Layer in the GHz Band.[7]Eklund C, Marks R B, Stanwood K L, Wang S. IEEE standard 802.16a: A technical overview of the wireless MANTM air interface for broadband wireless access. IEEE Communications Magazine, 2002, 40(6): 98-107.[8]Khun-Jush J.[J].et al.. Structure and performance of HIPERLAN/2 physical layer. IEEE VTC 99 Fall, Amsterdam, the Netherlands.1999,:-[9]Rappaport T S. Wireless Communications. Principles and Practice, New Jersey, Prentice Hall: 2002:1-20.[10]Korhonen J. Introduction to 3G Mobile Communications. Boston, London: 2nd Edition Artech House, 2003:7-16.[11]Colavolpe G, Ferrari G, Raheli R. Extrinsic information in iterative decoding: A unified view[J].IEEE Trans. on Comm.2001, 49(12):2088-2094[12]Tosato F, Bisaglia P. Simplified soft-output demapper for binary interleaved COFDM with application to HIPERLAN/2. 2002.ICC 2002. IEEE International Conference on Communications, New York, 2002, Vol. 2: 664-668.[13]Proakis J G. Digital Communications. 4rd edition, McGraw-Hill Inc.2001:254-283.[14]Bendetto S, Divsalar D, Montorsi G, Plooara F. Soft-output decoding algorithm in iterative decoding of turbo codes. JPL TDA Progress Report, 1996: 42-124.
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出版历程
  • 收稿日期:  2004-11-08
  • 修回日期:  2005-11-11
  • 刊出日期:  2006-06-19

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