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MC92314 Datasheet(PDF) 88 Page - Motorola, Inc |
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MC92314 Datasheet(HTML) 88 Page - Motorola, Inc |
88 / 100 page Usage and Performance of Motorola’s Single-chip DVB-T Device MOTOROLA Single Chip DVB-T Demodulator - Rev. 1.3 (11/30/98) 5-10 NOTE The modulation scheme chosen was 64-QAM, coderate 2/3 and guard interval 1/32. The failure point was defined to be a BER of 2*10-4 at the output of the Viterbi decoder. The RF signal was transmitted in UHF channel 34. For the CSE registers in the MC92314 the values from Table 5-3 were used. 1. Co-Channel PAL-I interference was provided via a UHF TV modulator with 75% colour bars, 1 kHz sound and PRBS Nicam. Using the the DVB-T local oscillator at the exact center frequency resulted in 1 dB (OFDM power 1 dB greater than PAL peak sync power). Changing the local oscillator frequency in small steps to simulate transmitters not synchronised resulted in a change of the protection ratio between 0 and 3 dB. 2. ... 5.6 References Adjacent Channel PAL Interference t.b.d. One Echo of 0 dB t.b.d. Multipath Reception t.b.d. Table 5-4. Typical Performance Values PARAMETER VALUE NOTE Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com |
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