Abstract
AbstractThe objective of this paper is to present a general overview of the Innovative Modulation System Project — MI-SBTVD — developed for the Brazilian Digital TV System. The MI-SBTVD Project includes an LDPC high performance error correcting code, an advanced transmit spatial diversity and an efficient multi-carrier modulation scheme. The building blocks of the system, its characteristics and most relevant innovations are presented. The performance of the whole system under different channels is compared with the performance of the present-day Digital Television standards. The complete system was implemented in FPGA using VHDL language and rapid prototyping tools for DSP algorithms.
Highlights
The term “high-definition television" (HDTV) has been used since the late 30’s of the last century to describe a new generation of television system
The International Consultative Committee for Radio (CCIR), the International Telecommunications Union - Radiocommunications Sector (ITU-R), defines HDTV in report 801 as [2]: “... a system designed to allow viewing at about three times picture height, such that the system is virtually transparent to the quality of portrayal that would have been perceived in the original scene or performance by a discerning viewer with normal visual acuity"
As briefly mentioned for testing the MI-SBTVD we identified impulsive noise types representing worst-case receiver susceptibility for both internal and external reception The impulsive noise impairments were generated according to the model depicted in Figure 5 and the parameters given in Table 7, where ΔSmin is the minimum space between pulses in μs, ΔSmax is the maximum space between pulses in μs and Seffect is the effective duration in μs
Summary
The term “high-definition television" (HDTV) has been used since the late 30’s of the last century to describe a new generation of television system. The major turning point to transform HDTV in a digital technology occurred in the USA, in June 1990, with the submission by General Instruments of an all-. The beginning of the standardization process started with the adoption in USA, in 1994, of the ATSC (Advanced Television System Committee) standard. This standard has been developed by a group of companies called Grand Alliance. ATSC This standard does not support hierarchical transmission, a feature supported by DVB and ISDB. The main characteristics of the ATSC standard, in terms of physical layer, are given in Table 1 [3]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
