Spectral overlay of Infostations on WM-CDMA cellular system
Qijun Song · Journal of the China Railway Society · 2001
In this paper, we studied the spectral overlay of Infostations based on N-CDMA and WM-CDMA systems and analyzed the achievable capacity of I/WM-CDMA system in downlink. The scheme of overlay can be considered as a means of evolution from narrowband, quasihigh speed mobile information system, which we call “Infostations”, into a wide -band and high speed multimedia mobile information system based. Because the Infostations is a high-efficient,low-cost information transmission pattern, and its “manytime, many-where” communication paradigm is very suitable for WAP service.The study here is helpful for enhancing the efficiency of wireless access Internet,in order to resolve the problem of low download rate and high cost of access in WAP service.