Development of smart mobile phone based on software radio and PR-QMF communication model
Xiaorong Xu, Baoyu Zheng, Jianwu Zhang, Guigen Zeng, Yuan Yuan · 2007
This paper researches a new unifying model of multi-user communication system based on perfect-reconstruction quadrature mirror filters (PR-QMF). software radio (SR) technology is applied in this paper in order to develop the smart mobile phone. The hardware evaluation board of smart mobile phone is constructed by S3C2410 processor and M23 base band/radio frequency (RF) processor, while its software platform is designed by embedded Linux and Qt/embedded. The smart phone supports speech service, short message service (SMS), image service, and network service, etc. The features and difficulties in the research and development (R&D) of smart phone's hardware and software are presented in detail in this paper. In the end, the TDMA multiple access is implemented on this unifying model of multi-user communication by means of the smart mobile phone evaluation board, which provides a perfect example for the further research.