GPRS is part of the evolution path towards 3G. This paper investigates the effect of user mobility on packet transmission in GPRS. A simulator was developed to study the end-to-end behaviour of data transmission between a mobile client and a fKed s

AMBE-3000R_manual.rar，音频芯片，做音频方面可以参考-Digital Voice System s AMBE-3000™ Vocoder Chip is an extremely flexible, voice compression solution that sets a new standard for quality, high-performance speech compression hardware. The AMBE-3000™ Vo