Design For Peripheral Driver Of CDMA Mobilephone

With the fast development of the techniques of mobile communication and computer, the requirement of personal communication become more widely. CDMA technology features large capacity, high security, soft capacity, sound quality, data transmission rate is high, soft switching, Small and low cost of network interference. The CDMA technique which has predominant competition by itself has become the key techniques of the future mobile communication. So it is the demand of mobile communication's development and the different structure of market for applying the CDMA techniques to the wireless access terminal products (such as Cell Phone) etc to transmit voice, short message service and support data service etc. It has highly applied value.This paper gives a systemic introduction of CDMA system, will put main emphasis on frame and key points of the software. This paper first describes the background and significance of the research topic. then introduced the history and development of CDMA mobile phone technology in the embedded system characteristics and requirements According to cell phone hardware entire framework of a cell phone on the ARM7 processor core features Given the large number of theoretical guidance based on the understanding of the overall framework of mobile phone software, the operating system to achieve the smallest cell phone. completion of the main mobile devices external LCD, keyboard, audio decoder driven. to provide an interactive environment. Drive in the system to ensure the stability of various properties and effective power management. Meanwhile, it also provides an abstract concept to the operating system level. The operating system can also make a variety of hardware equipment operation, and it is very flexible transplant, business and the continued development of equipment to make it possible.