Performance analysis of protograph-based low-density parity-check codes with spatial diversity

  title={Performance analysis of protograph-based low-density parity-check codes with spatial diversity},
  author={Yi Fang and Pingping Chen and Lin Wang and Francis Chung-Ming Lau and Kai-Kit Wong},
  journal={IET Commun.},
In wireless communications, spatial diversity techniques, such as space-time block code and single-input multiple-output (SIMO), are employed to strengthen the robustness of the transmitted signal against channel fading. This article studies the performance of protograph-based low-density parity-check (LDPC) codes with receive antenna diversity. The authors first propose a modified version of the protograph extrinsic information transfer algorithm and use it for deriving the threshold of the… 

Figures and Tables from this paper

Protograph LDPC codes for STBC Rayleigh fading channels

A modified protograph extrinsic information transfer (PEXIT) algorithm is proposed in order to analyze the convergence performance of protograph codes in such scenarios and it is illustrated that the AR3A code outperforms other three codes in the high signal-to-noise-ratio (SNR) region.

Asymptotic performance analysis of protograph LDPC-coded STBC systems in fading channels

This paper extends the modified protograph extrinsic information transfer (PEXIT) algorithm and derives the asymptotic bit-error-rate (BER) expression of protograph codes, and demonstrates that the AR3A code is superior to other three codes.

Performance of protograph LDPC codes over ergodic Nakagami fading channels

A new rate-1/2 protograph code, called improved accumulate-repeat-accumulate (IARA) code, is constructed by exploiting a modified PEXIT algorithm and results show that the proposed IARA code can achieve the lowest BER in the high signal-to-noise-ratio region.

Design and Analysis of Root-Protograph LDPC Codes for Non-Ergodic Block-Fading Channels

  • Yi FangG. BiY. Guan
  • Computer Science, Business
    IEEE Transactions on Wireless Communications
  • 2015
The convergence analysis, error-performance analysis, and simulated results show that the three proposed RP codes outperform the existing protograph LDPC codes and regular quasi-cyclic LDPC code and exhibit outage-limit-approaching error performance.

Rate-Compatible Root-Protograph LDPC Codes for Quasi-Static Fading Relay Channels

Both theoretical and simulated results suggest that the RCRP codes not only outperform the conventional regular rate-compatible protograph (RCP) codes in terms of error performance with code rates ranging from 0 to 1/2 but approach the outage limit as well.

Finite-length extrinsic information transfer analysis and design of protograph low-density parity-check codes for ultra-high-density magnetic recording channels

A modified version of finite-length (FL) extrinsic information transfer (EXIT) algorithm is proposed so as to facilitate the convergence analysis of protograph codes and the proposed RCIP codes stand out as better alternatives in comparison with other error-correction codes for ultra-high-density data storage systems.

Delay-limited Protograph Low Density Parity Codes for Space-Time Block Codes

This paper presents a framework to design protograph low density parity check (LDPC) codes for wireless communications where Alamouti space time block code (STBC) scheme is exploited to combat with

A Survey on Protograph LDPC Codes and Their Applications

This paper provides a comprehensive survey on the state-of-the-art in protograph LDPC code design and analysis for different channel conditions, including the additive white Gaussian noise channels, fading channels, partial response channels, and Poisson pulse-position modulation channels.

The Design of Low-Iteration Protograph Codes for Rayleigh Fading Channels with Spatial Diversity

  • T. NguyenHieu T. Nguyen
  • Computer Science
    2018 IEEE Seventh International Conference on Communications and Electronics (ICCE)
  • 2018
A new design framework for good low-iteration protograph low density parity check (LDPC) codes for fading channels where space spatial diversity is feasible is proposed and shown to have the best performance in the fading environment.

Design and Optimization of Protograph LDPC-Coded Multipulse PPM Systems Over Poisson Channels

An insightful investigation on protograph low-density parity-check (PLDPC)-coded MPPM systems over Poisson channels with the use of a novel type of constellations, bit-level rate-adaptive scheme, and enhanced PLDPC codes are conducted.



Performance Analysis of LDPC Code with Spatial Diversity

The Eb/No thresholds of a regular LDPC codes and the irregularLDPC codes for SIMO systems with several diversity orders are derived and it is shown that comparing the optimum degree distributions for MRC and STBC, when the diversity Orders are the same, the optimum degrees distributions are also the same.

Design of low-density parity-check codes for modulation and detection

A coding and modulation technique is studied where the coded bits of an irregular low-density parity-check (LDPC) code are passed directly to a modulator, and thereby outperforms a scheme employing a parallel concatenated (turbo) code by wide margins when there are more transmit than receive antennas.

Accumulate-Repeat-Accumulate Codes

It is shown that the ML SNR threshold of ARA codes also approaches very closely to that of random codes, and these codes have better interleaving gain than turbo codes.

LDPC coded MIMO multiple access with iterative joint decoding

The asymptotic analysis of the proposed scheme is verified by simulations of finite systems, which reveal meaningful differences between the performances of MIMO systems with single and multiple users and demonstrate performance similar to previously reported techniques, but with higher system loads, and significantly lower receiver complexity.

Application of Nonbinary LDPC Cycle Codes to MIMO Channels

This paper constructs a special class of nonbinary LDPC cycle codes called the parallel sparse encodable (PSE) codes, and concludes that for the MIMO channel considered, the nonbinary coded systems achieve a superior performance at a receiver complexity that is comparable to that of the binary systems.

Lowering the Error Floor of Optimized Short-Block-Length LDPC-Coded OFDM via Spreading

It is shown that the use of spreading along with code optimization and girth conditioning not only improves the performance but also lowers the error floor for short-length LDPC codes.

Spatial Diversity with LDPC Codes

It is shown that LDPC codes with optimum combining (LDPC-OC) system improves SINR by 1.98 dB and 2.62 dB with 3 and 4 receive antennas respectively in multipath fading channel in the presence of a single interferer.

Approaching MIMO capacity using bitwise Markov Chain Monte Carlo detection

Comparisons of the Log-MAP-tb b-MCMC with LSD based detectors demonstrate that MCMC detector is indeed the detector of choice for achieving channel capacity both in terms of performance and complexity.

Performance analysis of LDPC codes with selection diversity combining over identical and non-identical rayleigh fading channels

Close-form bit-error rate expressions of this scheme over independent and non-identically distributed and independent and identically distributed flat Rayleigh fading channels are derived using the extrinsic information transfer chart and Gaussian approximation and have the advantage of reduced computational complexity over DE.

Threshold of Protograph-Based LDPC Coded BICM for Rayleigh Fading

This work presents a simple method for designing protograph-based BICM that is general and applies to any modulation, and furthermore it calculates the iterative decoding thresholds of the protograph codes while mapped to higher order modulations.