Multi - Edge Low - Density Parity - Check Coded Modulation
نویسندگان
چکیده
Multi-Edge Low-Density Parity-Check Coded Modulation Lei Zhang Master of Applied Science Graduate Department of Edward Rogers Sr. Department of Electrical and Computer Engineering University of Toronto 2011 A method for designing low-density parity-check (LDPC) codes for bandwidth-efficient high-order coded modulation is proposed. Code structure utilizes the multi-edge-type LDPC code ensemble to achieve an improved match between codeword bit protection capabilities and modulation bit-channel capacities over existing LDPC coded modulation techniques. The multi-dimensional EXIT vector field for the specific multi-edge parameterization is developed for the analysis and design of code ensembles. A multi-dimensional EXIT decoding convergence condition is derived to enable efficient optimization. Code design results in terms of ensemble thresholds and finite-length Monte-Carlo simulations indicate that the new technique improves on the state-of-the-art performance, with significantly lower design and implementation complexity.
منابع مشابه
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