The Performance of Iterative Decoding Schemes based LDPC-BICM in MF and HF Channels

GU Pin-biao; WU Le-nan
January 2014
Journal of Signal Processing;Jan2014, Vol. 30 Issue 1, p30
Academic Journal
Low density parity check ( LDPC ) code is flexible in construction, simple in decoding, excellent performance and high spectrum efficiency. This paper introduces the LDPC codes and bit-interleaved coded modulation with iterative decoding (BICM-ID) scheme, proposed an LDPC codes as component codes in BICM-ID scheme is applied to Multi-Level Quadrature Amplitude Modulation (M-QAM) in the OFDM communication system, and given its log-likelihood ratio belief propagation (LLR-BP) decoding algorithm. Finally, according to the characteristics of the digital broadcast channel, system performancebasedonLDPC-BICM-ID scheme is compare with the rate compatible punctured convolutional code (RCPC) scheme over MF and HF radio broadcasting channels. Simulation results show that the proposed scheme is better than RCPC-MLC system.


Related Articles

  • Identification Algorithm for LDPC Codes Using Maximum Deviation Ratio. LIU Hai-da; LI Jing; PENG Hua // Journal of Signal Processing;2014, Vol. 30 Issue 8, p908 

    With the extensive application of adaptive modulation and coding techniques (AMC) and low density parity codes (LDPC), identification technology for LDPC in AMC has drawn more and more researchers' attention. For that problem, the existing methods have been suffering weak identification...

  • Comparison of various constructions of binary LDPC codes based on permutation matrices. Zyablov, V.; Ivanov, F.; Potapov, V. // Journal of Communications Technology & Electronics;Aug2012, Vol. 57 Issue 8, p932 

    Ensembles of low-density parity check codes based on permutation matrices are considered. Algorithms for generation of check matrices of such codes are proposed. The results of simulation of the obtained code constructions for an iterative belief propagation (sum-product) decoding algorithm...

  • Different perspective and approach to implement adaptive normalised belief propagation-based decoding for low-density parity check codes. Poocharoen, P.; MagaƱa, M. E. // IET Communications;2012, Vol. 6 Issue 15, p2314 

    In this study, the authors propose an improved version of the min-sum algorithm for low-density parity check code decoding, which the authors call 'adaptive normalised BP-based' algorithm. Their decoder provides a compromise solution between belief propagation and the min-sum algorithms by...

  • A Modified Optimally Quantized Offset Min-Sum Decoding Algorithm for Low-Complexity LDPC Decoder. Roberts, Michaelraj; Jayabalan, Ramesh // Wireless Personal Communications;Jan2015, Vol. 80 Issue 2, p561 

    In this paper, A Modified Optimally Quantized Offset Min-Sum Decoding Algorithm for low complexity, low-density parity-check decoder is proposed. In the proposed algorithm, more effective adjustment for the check node and variable node updating process is achieved by introducing optimally...

  • Design and implementation of LDPC encoder/decoder in the atmospheric laser communication. Limin Chang; Qingwei Dong; Ye Zhan // Applied Mechanics & Materials;2014, Issue 672-674, p883 

    The paper briefly introduces the structure principle and excellent characteristics of protograph LDPC codes and designs the serial encoding circuit based on FPGA. On the basis of the further study of Belief Propagation (BP) algorithm, X-min algorithm and A - min algorithm, decoder is designed...

  • Weighted-Bit-Flipping-Based Sequential Scheduling Decoding Algorithms for LDPC Codes. Qing Zhu; Le-nan Wu // Mathematical Problems in Engineering;2013, p1 

    Low-density parity-check (LDPC) codes can be applied in a lot of different scenarios such as video broadcasting and satellite communications. LDPC codes are commonly decoded by an iterative algorithm called belief propagation (BP) over the corresponding Tanner graph. The original BP updates all...

  • Decoding of non-binary low-density parity-check codes based on the genetic algorithm and applications over mobile fading channels. Xingcheng Liu; Chulong Liang; Yuanbin Zhang; Lin Zhang // IET Communications;2015, Vol. 9 Issue 16, p1941 

    In this study, an efficient decoding algorithm is proposed to decode non-binary low-density parity-check (LDPC) codes. The algorithm is derived from the belief-propagation (BP) decoding with genetic algorithm of binary LDPC codes. For the proposed algorithm, two decoding constraints are...

  • Cyclic switching weighted bit-flipping decoding for low-density parity-check codes. Yige Wang; Guilong Wu // IET Communications;2018, Vol. 12 Issue 3, p271 

    A cyclic switching weighted bit-flipping (CS-WBF) decoding algorithm for low-density parity-check (LDPC) codes is proposed in this study. By carefully choosing two selection criteria of the bit to flip and cyclically switching from one criterion to the other according to some rules during...

  • Iterative Detecting and Decoding Based on VBLAST of LDPC in Coded Cooperation System. CHEN Xiao-yong; GU Hui; PENG Zhi-juan // Journal of Networks;Feb2014, Vol. 9 Issue 2, p409 

    This paper proposes a method that employs low-density parity-check (LDPC) code combined with vertical layered space-time codes (VBLAST) using the cooperative multiple-input multiple-output (MIMO) system. A joint iterative detection algorithm based on Fincke-Pohst (FP) (sphere detecting) maximum...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics