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Your search keyword '"Di Zenobio, A"' showing total 2 results
Start Over Author "Di Zenobio, A" Journal ieee transactions on consumer electronics
2 results on '"Di Zenobio, A"'

1. An alternative modulation scheme in digital television for terrestrial broadcasting (DTTB)

Author

Di Zenobio, D. and Celidonio, M.

Subjects
Digital television -- Research, Television broadcasting -- Research, Television -- Research, Business, Electronics and electrical industries, Engineering and manufacturing industries
Abstract

A particular use of a Coded-OFDM with guard-interval (ICOFDM), to provide transmission with one enhanced definition (EDTV) or two standard definition (SDTV) TV signals in a 7MHz bandwidth channel, is illustrated in the present paper. Frequency arrangements of the RF channel and TV filters features are also suggested. Digital communications using conventional 8PSK signals and standard receiver techniques might have high bit error rates in a Rayleigh fading environment for the inability to track absolute phase during fades. Differential encoding can reduce this false phase locking problem. To combact this problem a differential encoding scheme is used combined with a constellation called 'star QAM'. The study starts of by assessing the performance results of an 8PSK star system carried out by computer simulation on a selective Railegh channel with different spread delay values, for an ICOFDM system, using BCH block code (127, 106, 3).

Published
1994

2. An alternative modulation scheme in digital television for terrestrial broadcasting (DTTB)

Author

M. Celidonio and D. Di Zenobio

Subjects
Block code, High-definition television, business.industry, Computer science, Transmitter, Bandwidth (signal processing), Data_CODINGANDINFORMATIONTHEORY, Broadcasting, Frequency-division multiplexing, QAM, Modulation, Guard interval, Media Technology, Electronic engineering, Fading, Digital television, Electrical and Electronic Engineering, business, Differential coding, Data transmission, Communication channel, Phase-shift keying, Rayleigh fading
Abstract

A particular use of a coded-OFDM with guard-interval (ICOFDM), to provide transmission with one enhanced definition (EDTV) or two standard definition (SDTV) TV signals in a 7 MHz bandwidth channel, is illustrated in the present paper. Frequency arrangements of the RF channel and TV filters features are also suggested. Digital communications using conventional 8PSK signals and standard receiver techniques might have high bit error rates in a Rayleigh fading environment for the inability to track absolute phase during fades. Differential encoding can reduce this false phase locking problem. To combat this problem a differential encoding scheme is used combined with a constellation called "star QAM". The study starts of by assessing the performance results of an 8PSK star system carried out by computer simulation on a selective Rayleigh channel with different spread delay values, for an ICOFDM system, using BCH block code (127, 106, 3). >

Published
1994
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