Developing Interactive Integrated. Receiver Decoders: DAB/GSM Integration

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1 Developing Interactive Integrated Wolfgang Klingenberg Robert-Bosch GmbH Hildesheim Receiver Decoders: DAB/GSM Integration DAB-GSM-Integration.ppt 1 Overview DAB receiver development Current DAB chip set Future developments DAB/GSM Integration DAB-GSM-Integration.ppt 2

2 DAB Receiver Development Hannover DAB 106 (DSP-based, IFA 1995) DAB-GSM-Integration.ppt 3 DAB Receiver Development D-FIRE 1 D-FIRE: DAB - Fully Integrated Receiver Engine first (1997) true one-chip receiver contains all needed digital functionality A/D converter digital down-conversion full stream (up to 1.7 Mbit/s) channel decoding MPEG audio decoding synchronisation integrated SRAM about 7 million transistors in 0.35m CMOS DAB-GSM-Integration.ppt 4

3 DAB Receiver Development DAB-module based on D-FIRE 1 (IFA 1997) DAB-GSM-Integration.ppt 5 Overview DAB receiver development Current DAB chip set Future developments DAB/GSM Integration DAB-GSM-Integration.ppt 6

4 Current DAB chip set CF 800B front-end CF 800B tuner IC one-chip DAB tuner for both band III and L-band double heterodyne principle BiCMOS process adjustment-free low-cost solution contains all LNAs, mixers and PLLs DAB-GSM-Integration.ppt 7 Current DAB chip set D-FIRE 2 Combined DAB / FM receiver chip comprising 10 Bit A/D-converter for IF sampling Decoding of complete DAB data stream Integrated MPEG audio decoder Digital FM demodulation Digital synchronisation and audio sample rate conversion Integrated DSP and RISC processor cores Integrated memory (SRAM) Low power consumption (< 200 mw for one audio channel) About 8 million transistors in 0.25m CMOS DAB-GSM-Integration.ppt 8

5 Current DAB chip set Bosch 2 IC DAB module (IFA 1999) 2 ASICs from Bosch and few external components CF800B DAB tuner IC D-FIRE 2 DAB/FM baseband IC Flash program memory Optional SRAM Filters and Oscillators Optional standard FM tuner Memory D-Fire 2 CF800B DAB-GSM-Integration.ppt 9 DAB chip sets Module Generations DAB-GSM-Integration.ppt 10

6 Current DAB chip set Palm DAB (Prototype) DAB receiver module controlled by Palm III (IFA 1999) DAB-GSM-Integration.ppt 11 Current DAB chip set Highlights Bosch 2 IC DAB Module fully adjustment-free simple crystal oscillator instead of tuneable VCXO integrated 32 Bit controller digital part supports FM decoding power consumption 1-2 Watt (using power management) many interfaces (UART, SPI, EPP, I²C) on-chip audio sample rate converter allows simple adaptation to MOST bus (48 khz DAB -> 44.1 khz MOST) MP3 audio decoding without external components DAB-GSM-Integration.ppt 12

7 Overview DAB receiver development Current DAB chip set Future developments DAB/GSM Integration DAB-GSM-Integration.ppt 13 Future Developments New RF IC-Concepts WRAP (Wireless Receivers in Advanced Packaging) ESPRIT project to develop miniaturised receivers DAB MCM solution with integrated VCOs and SAW filter Compensation of temperature drift DAB-GSM-Integration.ppt 14

8 Possible Future Developments (not yet decided) New RF ICs Front-end IC for combined DAB/FM receiver Full digital control enables intelligent tuning Common VCO for DAB and FM Image rejection front-end for FM Adjustment-free front-end for DAB Low power consumption suitable for handheld applications DAB-GSM-Integration.ppt 15 Overview DAB receiver development Current DAB chip set Future developments DAB/GSM Integration DAB-GSM-Integration.ppt 16

9 DAB/GSM Integration Pros & Contras Similar building blocks but different / contradictory requirements DAB GSM bandwidth: 1.5 MHz bandwidth: 200 khz carrier freqc / 1450 MHz carrier freqc. 900/1800/1900 MHz only receiver receiver & transmitter high linearity necessary linearity not necessary high power consumption very low power consumption Viterbi: channel decoder Viterbi: equaliser low accuracy, high data rate high accuracy, low data rate DAB-GSM-Integration.ppt 17 DAB/GSM Integration Hybrid Interactive Broadcasting Configurations MEMO Internet DAB-GSM-Integration.ppt 18

10 DAB/GSM Integration Hybrid Interactive Broadcasting Configurations combination of broadcast and telecom. systems with divergent technology paths IC-integration visible only for really huge markets integration on system level requires agreed system architectures and interfaces MEMO-Specification ( M3A DRIVE MCP DIAMOND Standardisation (ETSI, ITU) DAB-GSM-Integration.ppt 19 Conclusion DAB and GSM are well established in Europe and worldwide for both very high integrated components are available on the market hybrid interactive broadcasting combines systems with divergent technology paths integration on system level agreed system architectures and interfaces needed DAB-GSM-Integration.ppt 20