ISDB-T/Tb Mod.

General Description

The  MW_ISDBT/Tb  modulator  core performs  the  digital  baseband  functionality for  the  transmission  side  of  Japanese/Brazilian  Integrated  Services  Digital Broadcasting Terrestrial link. The modulator core implements the framing functions  as  defined  by  ARIB  STD  B31 (2005-11). It  is  configurable  to  supports  all  several configurations  regard  to  constellation, DQPSK, 4QAM, 16QAM and 64QAM, code rate, 1/2, 2/3, 3/4, 5/6 and 7/8, guard interval, 1/32, 1/16, 1/8 and 1/4, 1k-2k-4k-8k. Microblaze or  external processor  interface, with status and control registers, is available for controlling and managing the core. External memories (SDRAM  and  DDR)  are used to support SFN functionality. TS over IP, for IP based contribution, or ASI contribution are available. A direct  interface  with  Analog  Devices AD9789,  covering  VHF-UHF  bands  is implemented. Internal  20-bit  architecture  for  high  level MER and BER performances.

Features

• Compliant with ARIB STD B31 (2005-11)
• Fully Synchronous design
• Mode 1-2-3 supported
• Support all code rate, all constellation type and all guard interval
• Support Hierarchical Layers
• MFN and SFN functionalities
• Internal  or  external  microcontroller interface
• Support TMCC & AC1/AC2 channel input ports for dynamic operation
• External  SDRAM  –  DDR2  memory interface
• AD9789  direct  VHF-UHF  conversion interface available
• Typical MER > 43 dB at overall frequency range
• Digital  Linear –  Non  Linear –  Group Delay Precorrection Option

Typical Application