Cellular Phones as Embedded Systems by Niam Amarnani

EEL 6935 Cellular Phones as Embedded Systems 2 of 33 Introduction Cellular phones are largely being used today.The cellular phones consists of a transmitter and receiver.it consist of microprocessor,Rom,Ram,. The LCD display and keyboard is also available

EEL 6935 Cellular Phones as Embedded Systems 3 of 33 Outline Introduction Introduction Today’s Cellular Phone Today’s Cellular Phone Architecture for Wireless Access Architecture for Wireless Access Memory, OS, and Power Challenges Memory, OS, and Power Challenges Conclusions Conclusions

EEL 6935 Cellular Phones as Embedded Systems 4 of 33 Convergence enables people to create, share and consume digital content Cellular phones evolve from traditional cost-optimized handhelds to multifunctional terminals Cellular phones: key platform for mobile convergence applications (web browsing, video streaming, etc.) Digital Convergence

EEL 6935 Cellular Phones as Embedded Systems 5 of 33 Extremely complex embedded system Functional blocks are custom-made for mobility Chips are either proprietary designs or based on available chips. sophisticated and better functionality Today’s Cellular Phone

EEL 6935 Cellular Phones as Embedded Systems 6 of 33 Example: Blackberry Bold

EEL 6935 Cellular Phones as Embedded Systems 7 of 33 Example: Blackberry Bold

EEL 6935 Cellular Phones as Embedded Systems 8 of 33 Cellular phones have come a long way from analog communication devices to digital mobile computers. Today, a cellular phone is a paradigm of an embedded system having highly optimized cost, size, efficiency and performance. Challenges in RF circuits, implementation architecture, memory, and power consumption are still affecting the development and growth of mobile devices. New technologies such as decentralized architectures, reconfigurable circuits, advanced memories, and low power designs will help overcome challenges. Conclusions

EEL 6935 Cellular Phones as Embedded Systems 9 of 33 Why is it called Cellular? An antenna tower handles calls from a short distance from it (Base Station) More antenna towers means more users can talk on cell phones ▫Lower power the cell phone emits ▫Repeat the frequencies used The antennas form small cells of coverage around the city

EEL 6935 Cellular Phones as Embedded Systems 10 of 33 Cell Phone Identity Systems Every cell phone has 2 unique identifications MIN – Mobile Identification Number ▫A 10 digit telephone number ▫ ESN – Electronic Serial Number ▫32 bit binary number ▫Built into the cell phone