RU97112179A - DIGITAL TRANSMISSION METHOD OF DIGITAL SIGNALS - Google Patents

DIGITAL TRANSMISSION METHOD OF DIGITAL SIGNALS

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Publication number
RU97112179A
RU97112179A RU97112179/09A RU97112179A RU97112179A RU 97112179 A RU97112179 A RU 97112179A RU 97112179/09 A RU97112179/09 A RU 97112179/09A RU 97112179 A RU97112179 A RU 97112179A RU 97112179 A RU97112179 A RU 97112179A
Authority
RU
Russia
Prior art keywords
channel
digital
frequency
mhz
digital signal
Prior art date
Application number
RU97112179/09A
Other languages
Russian (ru)
Other versions
RU2173506C2 (en
Inventor
Зигле Герт
Original Assignee
Роберт Бош Гмбх
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19538302A external-priority patent/DE19538302C2/en
Application filed by Роберт Бош Гмбх filed Critical Роберт Бош Гмбх
Publication of RU97112179A publication Critical patent/RU97112179A/en
Application granted granted Critical
Publication of RU2173506C2 publication Critical patent/RU2173506C2/en

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Claims (12)

1. Способ наземной передачи по меньшей мере одного цифрового сигнала, в частности цифрового радиовещательного и/или телевещательного сигнала, отличающийся тем, что передают по меньшей мере один цифровой сигнал по меньшей мере в одном канале (31), соседнем по меньшей мере с одним занятым или незанятым каналом (30, 32) для передачи аналогового телевещательного сигнала, что динамический диапазон (100) спектра (41) по меньшей мере одного цифрового сигнала меньше заданного значения, которое значительно меньше динамического диапазона спектра (35, 36) аналогового телевещательного сигнала, и/или что амплитуда спектра (41) по меньшей мере одного цифрового сигнала меньше заданного значения, которое значительно меньше амплитуды несущей изображения аналогового телевещательного сигнала.1. A method for terrestrial transmission of at least one digital signal, in particular a digital broadcasting and / or broadcasting signal, characterized in that at least one digital signal is transmitted in at least one channel (31) adjacent to at least one occupied or an unoccupied channel (30, 32) for transmitting an analogue broadcast signal that the dynamic range (100) of the spectrum (41) of at least one digital signal is less than a specified value, which is significantly less than the dynamic range of the spectrum (35, 36) a broadcast television signal, and / or that the amplitude of the spectrum (41) of the at least one digital signal is less than a predetermined value that is significantly less than the amplitude of the image carrier of the analog broadcast signal. 2. Способ по п. 1, отличающийся тем, что по меньшей мере один цифровой сигнал передают в модулированном предпочтительно по ОЧУ-методу (кодовое ортогональное частотное уплотнение) виде. 2. The method according to p. 1, characterized in that at least one digital signal is transmitted in a modulated mode, preferably according to the OFDM method (code orthogonal frequency division multiplexing). 3. Способ по п. 1 или 2, отличающийся тем, что уровни по меньшей мере одного передаваемого цифрового сигнала не превышают заданного значения, которое значительно меньше пикового уровня аналогового телевещательного сигнала. 3. The method according to p. 1 or 2, characterized in that the levels of at least one transmitted digital signal do not exceed a predetermined value, which is significantly less than the peak level of the analogue broadcast signal. 4. Способ по пп. 1, 2 или 3, отличающийся тем, что уровни по меньшей мере одного принимаемого цифрового сигнала на величину приблизительно до 20 дБ ниже пикового уровня аналогового телевещательного сигнала. 4. The method according to PP. 1, 2 or 3, characterized in that the levels of at least one received digital signal are approximately 20 dB lower than the peak level of the analogue broadcast signal. 5. Способ по одному из предшествующих пунктов, отличающийся тем, что количество данных по меньшей мере одного цифрового сигнала уменьшают путем кодирования. 5. The method according to one of the preceding paragraphs, characterized in that the amount of data of at least one digital signal is reduced by encoding. 6. Способ по одному из предшествующих пунктов, отличающийся тем, что частотный диапазон по меньшей мере одного цифрового сигнала при передаче по меньшей мере в одном канале (31) отделен защитным частотным интервалом (45) по меньшей мере от одного соседнего занятого или незанятого канала (30, 32). 6. The method according to one of the preceding paragraphs, characterized in that the frequency range of the at least one digital signal during transmission of at least one channel (31) is separated by a protective frequency interval (45) from at least one adjacent occupied or unoccupied channel ( 30, 32). 7. Способ по одному из предшествующих пунктов, отличающийся тем, что в зоне обслуживания цифровые, модулированные по ОЧУ-методу сигналы одинакового содержания передаются различными передатчиками на той же частоте и в частотном диапазоне по меньшей мере одного канала (31). 7. The method according to one of the preceding paragraphs, characterized in that in the coverage area digital, modulated by the OFDM method signals of the same content are transmitted by various transmitters at the same frequency and in the frequency range of at least one channel (31). 8. Способ по одному из предшествующих пунктов, отличающийся тем, что при передаче нескольких отдельных или объединенных в блоки цифровых сигналов по меньшей мере в одном канале (31) частотные диапазоны по меньшей мере двух цифровых сигналов отделены один от другого защитным частотным интервалом (50). 8. The method according to one of the preceding paragraphs, characterized in that when transmitting several separate or combined into digital signal blocks in at least one channel (31), the frequency ranges of at least two digital signals are separated from each other by a protective frequency interval (50) . 9. Способ по одному из предшествующих пунктов, отличающийся тем, что по меньшей мере один канал (31) при ширине канала около 6 МГц разделяют на три блока (40) приблизительно по 1,5 МГц каждый и что оставшиеся около 1,5 МГц используют в качестве защитных частотных интервалов (50) между отдельными блоками (40) и в качестве защитных частотных интервалов (45) между частотным диапазоном цифрового спектра (41) и верхним и нижним соседними каналами (32) и (30). 9. The method according to one of the preceding paragraphs, characterized in that at least one channel (31) with a channel width of about 6 MHz is divided into three blocks (40) of approximately 1.5 MHz each and that the remaining about 1.5 MHz are used as protective frequency intervals (50) between individual units (40) and as protective frequency intervals (45) between the frequency range of the digital spectrum (41) and the upper and lower neighboring channels (32) and (30). 10. Способ по одному из пп. 1-8, отличающийся тем, что по меньшей мере один канал (31) при ширине канала около 7 МГц разделяют на четыре блока (40) приблизительно по 1,5 МГц каждый и что оставшиеся около 1 МГц используют в качестве защитных частотных интервалов (50) между отдельными блоками (40) и в качестве защитных частотных интервалов (45) между частотным диапазоном цифрового спектра (41) и верхним и нижним соседними каналами (32) и (30). 10. The method according to one of paragraphs. 1-8, characterized in that at least one channel (31) with a channel width of about 7 MHz is divided into four blocks (40) of approximately 1.5 MHz each and that the remaining about 1 MHz are used as guard frequency intervals (50 ) between individual units (40) and as guard frequency intervals (45) between the frequency range of the digital spectrum (41) and the upper and lower neighboring channels (32) and (30). 11. Способ по одному из пп. 1-8, отличающийся тем, что по меньшей мере один канал (31) при ширине канала около 8 МГц разделяют на четыре блока (40) приблизительно по 1,5 МГц каждый и что оставшиеся около 2 МГц используют в качестве защитных частотных интервалов (50) между отдельными блоками (40) и в качестве защитных частотных интервалов (45) между частотным диапазоном цифрового спектра (41) и верхним и нижним соседними каналами (32) и (30). 11. The method according to one of paragraphs. 1-8, characterized in that at least one channel (31) with a channel width of about 8 MHz is divided into four blocks (40) of approximately 1.5 MHz each and that the remaining about 2 MHz are used as guard frequency intervals (50 ) between individual units (40) and as guard frequency intervals (45) between the frequency range of the digital spectrum (41) and the upper and lower neighboring channels (32) and (30). 12. Способ по одному из пп. 1-8, отличающийся тем, что по меньшей мере в одном канале (31) передают замкнуто кодированный, в частности содержащий сигналы цифрового телевизионного вещания (ЦТВ-сигналы) блок (40) частот, с защитными частотными интервалами (45) на границах с соседними каналами (30) и (32). 12. The method according to one of paragraphs. 1-8, characterized in that at least one channel (31) transmit closed encoded, in particular containing digital television broadcasting signals (DTV signals) frequency block (40), with protective frequency intervals (45) at the borders with neighboring channels (30) and (32).
RU97112179/09A 1995-10-16 1996-10-07 Method for surface transmission of digital information RU2173506C2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19538302A DE19538302C2 (en) 1995-10-16 1995-10-16 Methods for terrestrial transmission of digital signals
DE19538302.8 1995-10-16
PCT/DE1996/001919 WO1997015121A2 (en) 1995-10-16 1996-10-07 Method of terrestrially transmitting digital signals

Publications (2)

Publication Number Publication Date
RU97112179A true RU97112179A (en) 1999-06-20
RU2173506C2 RU2173506C2 (en) 2001-09-10

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Application Number Title Priority Date Filing Date
RU97112179/09A RU2173506C2 (en) 1995-10-16 1996-10-07 Method for surface transmission of digital information

Country Status (12)

Country Link
US (1) US6366309B1 (en)
EP (1) EP0797892B1 (en)
JP (2) JP3850882B2 (en)
CN (1) CN1134981C (en)
AT (1) ATE191823T1 (en)
CZ (1) CZ288840B6 (en)
DE (2) DE19538302C2 (en)
ES (1) ES2145515T3 (en)
HK (1) HK1005114A1 (en)
PL (1) PL181873B1 (en)
RU (1) RU2173506C2 (en)
WO (1) WO1997015121A2 (en)

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