Paper
1 May 2009 Structured low-density parity-check codes with bandwidth efficient modulation
Michael K. Cheng, Dariush Divsalar, Stephanie Duy
Author Affiliations +
Abstract
In this work, we study the performance of structured Low-Density Parity-Check (LDPC) Codes together with bandwidth efficient modulations. We consider protograph-based LDPC codes that facilitate high-speed hardware implementations and have minimum distances that grow linearly with block sizes. We cover various higherorder modulations such as 8-PSK, 16-APSK, and 16-QAM. During demodulation, a demapper transforms the received in-phase and quadrature samples into reliability information that feeds the binary LDPC decoder. We will compare various low-complexity demappers and provide simulation results for assorted coded-modulation combinations on the additive white Gaussian noise and independent Rayleigh fading channels.
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Michael K. Cheng, Dariush Divsalar, and Stephanie Duy "Structured low-density parity-check codes with bandwidth efficient modulation", Proc. SPIE 7349, Wireless Sensing and Processing IV, 73490C (1 May 2009); https://doi.org/10.1117/12.818223
Lens.org Logo
CITATIONS
Cited by 4 scholarly publications and 1 patent.
Advertisement
Advertisement
RIGHTS & PERMISSIONS
Get copyright permission  Get copyright permission on Copyright Marketplace
KEYWORDS
Modulation

Signal to noise ratio

Binary data

Demodulation

Phase shift keying

Computer simulations

Reliability

Back to Top