Simplified Soft Demapper for APSK with Product Constellation Labeling

Amplitude phase shift keying (APSK) constellation is capable of outperforming quadrature amplitude modulation (QAM) in terms of both the mutual information and the error-control performance. However, the lack of simplified demapper prevents its potential applications due to the inherent high computation complexity. In this paper, the concept of APSK using product constellation labeling is introduced, and two simplified demappers are proposed. Theoretical analysis and simulations show that the performance degradation caused by these simplified demappers is negligible, while the complexity is significantly reduced, compared to the traditional Max-Log-MAP demapper.

[1]  Jinghu Chen,et al.  Near optimum universal belief propagation based decoding of low-density parity check codes , 2002, IEEE Trans. Commun..

[2]  Giuseppe Caire,et al.  Bit-Interleaved Coded Modulation , 2008, Found. Trends Commun. Inf. Theory.

[3]  Paola Bisaglia,et al.  Simplified soft-output demapper for binary interleaved COFDM with application to HIPERLAN/2 , 2002, 2002 IEEE International Conference on Communications. Conference Proceedings. ICC 2002 (Cat. No.02CH37333).

[4]  X. Li.  Bit-interleaved coded modulation with iterative decoding using soft feedback , 1998 .

[5]  Stephan ten Brink,et al.  Extrinsic information transfer functions: model and erasure channel properties , 2004, IEEE Transactions on Information Theory.

[6]  Jian Song,et al.  Coded Modulation with Signal Space Diversity , 2011, IEEE Transactions on Wireless Communications.

[7]  Zhaocheng Wang,et al.  A Novel BICM-ID System Approaching Shannon-Limit at High Spectrum Efficiency , 2011, IEICE Trans. Commun..

[8]  Zhixing Yang,et al.  APSK Constellation with Gray Mapping , 2011, IEEE Communications Letters.

[9]  Dongweon Yoon,et al.  Simple Signal Detection Algorithm for 4+12+16 APSK in Satellite and Space Communications , 2010 .

[10]  Riccardo De Gaudenzi,et al.  Performance analysis of turbo-coded APSK modulations over nonlinear satellite channels , 2006, IEEE Transactions on Wireless Communications.

[11]  Yan Li,et al.  Improved min-sum decoding algorithms for irregular LDPC codes , 2005, Proceedings. International Symposium on Information Theory, 2005. ISIT 2005..

[12]  Peter J. Winzer,et al.  Calculation of Mutual Information for Partially Coherent Gaussian Channels With Applications to Fiber Optics , 2010, IEEE Transactions on Information Theory.

[13]  S. ten Brink,et al.  Iterative demapping and decoding for multilevel modulation , 1998, IEEE GLOBECOM 1998 (Cat. NO. 98CH36250).

[14]  Ephraim Zehavi,et al.  8-PSK trellis codes for a Rayleigh channel , 1992, IEEE Trans. Commun..

[15]  Dongweon Yoon,et al.  An Approximated Soft Decoding Algorithm of 16-APSK Signal for DVB-S2 , 2007, 2007 Digest of Technical Papers International Conference on Consumer Electronics.

[16]  Xiang-Gen Xia,et al.  Unitary space-time codes from Alamouti's scheme with APSK signals , 2004 .

[17]  Wolfgang H. Gerstacker,et al.  Low Complexity Demapping Algorithms for Multilevel Codes , 2011, IEEE Transactions on Communications.

[18]  Stephan ten Brink,et al.  Convergence behavior of iteratively decoded parallel concatenated codes , 2001, IEEE Trans. Commun..