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Study on the application of hierarchical transmission technique in terrestrial digital TV broadcasting
Pages: 15-17
Year: Issue:  4

Keyword:  digital TVCOFDM hierarchical transmissionmulti-resolution modulationmultistage decoding;
Abstract: The basic principle of hierarchical modulation is elaborated and MQAM and non-uniform-MQAM using Gray mapping is described in this paper. Hierarchical transmission can implement multi-resolution terrestrial broadcasting of digital TV. The principle of hierarchical channel coding is introduced and a multistage decoding algorithm is proposed.
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