In this brief, we propose a newly designed quarter-rate quasi-cyclic low density parity check (LDPC) code for the cloud transmission system. The cloud transmission system requires a near Shannon limit low-rate coding for the next generation terrestrial digital television system. The proposed LDPC code is optimized forR=1/4. At the code length of 64 K, it is only 0.6 dB away from Shannon limit.
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Park et al. (2013) studied this question.
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