Mobility/Portability in ISDB-T - DiBEG

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Image of “HDTV + One-seg”in same bandwidth(Example; 1seg + 12 seg)Layer A(LDTV,Audio,Data)13segments(6MHz bandwidth)Layer B(HDTV or Multi-SDTV with Data))frequencyQPSK constellationDifference of required C/NBetween 64QAM and QPSKis about 12 dB64QAM constellation*13 segments are divided into layers, maximum number of layers is 3.*Any number of segment for each layers can be selected (totally 13 segment)*Transmission parameter sets of each layer can be set independently(In above example, modulation index of each layer are different)4
(2) What’s Merit of partial reception?What is the most importantfor portable reception?Long time operation without chargingReduce the power consumption of receiverThis is justMerit ofPartial ReceptionHow to reduce the power consumption?Decrease the signal processingspeed of receiverNarrow band receptionSolutionReduce signal Process speed1/8 of full band reception (1 MHz FFT sample frequency)5
Page 1 and 2: Mobility/Portability in ISDB-TSET 2
Page 3: 1. Brief Technical Description of M
Page 7 and 8: (Product example of Demodulator LSI
Page 9 and 10: C/Neq [dB] (Carrie to Equivalent Ga
Page 11 and 12: RFTunerFFTChannelEstimation andEqua
Page 13 and 14: (Product example of Demodulator LSI
Page 15 and 16: ■Fixed ReceiversPDP TVPDP-A427HXV
Page 17 and 18: ■Fixed Receivers(Cont.)Desktop PC
Page 19 and 20: ■Portable ReceiversCell PhoneOne-
Page 21 and 22: 3. Introduction of Mobile Applicati
Page 23 and 24: One-Segservice (2)On-air On-air pro
Page 25 and 26: HDTV mobile access (1)HDTV can be w
Page 27 and 28: HDTV mobile access (3)Comparison te
Page 29 and 30: HDTV mobile access (5)HDTV tuner fo
Page 31 and 32: 4. Investigation for future Mobile
Page 33 and 34: One-Segservice in a subway car (2)T
Page 35 and 36: One-Segservice in a subway car (4)C
Page 37 and 38: ISDB-T T mmJapan is now under study
Page 39 and 40: ISDB-T T mmISDB-Tmmservice category
Page 41 and 42: ISDB-T T MMF Memberssteering board

Mobility/Portability in ISDB-T - DiBEG

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