LDPC Coded 2^m-ary QAM for Ultra High Speed Communications

Abstract:

Modern communication systems that employ LDPC codes and QAM modulation can achieve high speed and reliable transmission without bandwidth expansion. In this paper, the performances of LDPC codes with 2^m- ary QAM at m>10, which can provide enormous bandwidth efficiency, are studied. Bit error rate performances of various combinations of LDPC codes and order of QAM are provided. From the results, the performance of LDPC coded ultra-high order QAM is excellent making this system very attractive for ultra-high speed communications.

• Periodical: Applied Mechanics and Materials (Volume 781)
• Pages: 45-48
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.781.45
• Online since: August 2015
• Authors: Sawitree Wongroekdee, Kosin Chaiprathum, Virasit Imtawil, Puripong Suthisopapan*
• Keywords: LDPC, Sum-Product Algorithm, Ultra-High Order QAM

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