T-DMB Demodulator

ASTRI’s T-DMB (Terrestrial Digital Media Broadcasting) Demodulator Chipset design is based on Eureka-147 Digital Audio Broadcast (DAB) standard with enhancements such as MPEG-4 BIFS, middleware, traffic and travel information service technology, disaster broadcasting, conditional access, and the combining technology of broadcast and wireless network. T-DMB service was first introduced in Korea 1 December 2005 and is currently the most successful commercially deployed digital TV standard in the world. There are more than 40 countries promoting to introduce the DAB/T-DMB service covering the regions that are home to 475 million people.

The chip takes the I/Q data from ADC and performs the necessary sampling and time/frequency correction, de-interleaving, demodulation and decoding, and provides T-DMB transport stream. In order to address this growing and sizeable market, our T-DMB project aims to explore the design space to identify a low-power, low silicon area and cost-effective implementation of a T-DMB baseband demodulator. Leveraging its Custom Processor for baseband processing and control, ASTRI’s engineers design the dedicated hardware logic to accelerate arithmetic intensive operations.

ASTRI’s Custom Processor + ASIC Solution

Key Features

• Proprietary demodulation algorithms such as robust early path detection in multi-path fading scenarios
• Cost-effective hardware architecture with ASTRI’s custom processor, a single issue RISC machine with 7 pipeline stages and capable of running at 200+MHz
• Sharing of arithmetic/logic units among multiple functional blocks such as complex multiply and add unit
• Low-power circuitry designs by clock gating, multi-Vdd, multi-Vth and dynamic voltage scaling
• Multi-mode convergence platform
• FPGA prototype and chip available soon