Advances in Visual Data Compression and Communication

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16.5 Experiments 361

Note that the result in Figure 16.5 does not mean that DCast can outperform

H.264 in compression efficiency. H.264 is a video coding standard, while DCast

is a wireless video transmission framework. H.264 has high compression efficiency

but the coded stream is not robust to error. This is why the H.264 coded stream

needs additional FEC bits to protect. DCast may not be as efficient as H.264 in video

compression, but it is robust to channel noise. Thus, it can skip FEC and can use a

dense 64K-QAM modulation, and can achieve high system efficiency.

16.5.3 Evaluation of Each Module

DCast has several modules such as coset coding, ...