VSB transmission system

Details VSB transmission system VSB transmission system

2004-07-23

2009-08-18

Fan, Chieh M. (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

C375S242000, C375S301000, C375S262000, C375S320000, C370S342000, C370S334000, C714S748000, C714S786000

Reexamination Certificate

active

07577208

ABSTRACT:
A vestigial sideband (VSB) modulation transmission system and, a method for encoding an input signal in the system are disclosed. According to the present invention, the VSB transmission system includes a convolutional encoder for encoding an input signal, a trellis-coded modulation (TCM) encoder for encoding the convolutionally encoded signal, and a signal mapper mapping the trellis-coded signal to generate a corresponding output signal. Different types of the convolutional encoders are explored, and the experimental results showing the performances of the VSB systems incorporating each type of encoders reveals that a reliable data transmission can be achieved even at a lower input signal to noise ratio when a convolutional encoder is used as an error-correcting encoder in a VSB system.

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